IDL 101 Instruction Manual

Transcription

1 Instruction Manual

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3 Copyright 2004 by GANTNER INSTRUMENTS Test & Measurement GMBH, Schruns (Austria). Copyrights: Operating instructions, manuals and software are protected by copyright. All rights are reserved. Copying, duplication, translation, installation in any electronic medium or machine-readable form in whole or in part is prohibited. The sole exception is represented by creation of a back-up copy of software for own use as a safeguard, so far as this is technically possible and recommended by us. Any infringement will render the party committing such infringement liable to compensation payment. Liability: Any claims against the manufacturer based on the hardware or software products described in this manual shall depend exclusively on the conditions of the guarantee. Any further-reaching claims are excluded, and in particular the manufacturer accepts no liability for the completeness or accuracy of the contents of this manual. The right is reserved to make alterations, and alterations may be made at any time without prior notice being given. Trade marks: Attention is drawn at this point to markings and registered trade marks used in this manual, in particular to those of Microsoft Corporation, International Business Machines Corporation and Intel Corporation.! Important: Before commencing installation, commissioning, putting into service and before any maintenance work is carried out, it is essential that the relevant warning and safety instructions in this manual are read! HB_IDL101_E_V222.doc 1

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5 ! General warning and safety instructions: Dear customer, We congratulate you on having selected a product of (in the following: Gantner Instruments). So that our product functions in your installation with safety and to your complete satisfaction, we take this opportunity to familiarize you with the following ground rules: 1. Installation, commissioning, operation and maintenance of the product purchased must be carried out in accordance with instructions, i.e. in accordance with the technical conditions of operation, as described in the corresponding product documentation. 2. Before either installation, commissioning, operation or maintenance it is therefore essential that you read the corresponding chapter of this manual and observe its instructions. 3. If there are still some points on which you are not entirely clear, please do not take a chance, but ask the customer adviser responsible for you, or ring the Gantner Instruments hotline. 4. Where not otherwise specifically laid down, appropriate installation, commissioning, operation and maintenance of the appliance is the customer s responsibility. 5. Directly on receipt of the goods, inspect both the packaging and the appliance itself for any signs of damage. Also check that the delivery is complete (-> accessories, documentation, auxiliary devices, etc.). 6. If the packaging has been damaged in transport or should you suspect that it has been damaged or that it may have a fault, the appliance must not be put into service. In this case, contact your customer advisor. He will make every effort to resolve the problem as quickly as possible. 7. Installation, commissioning and servicing of our appliances must only be carried out by suitably trained personnel. In particular, electrical connections may only be made by correspondingly qualified specialists. Here, the appropriate installation provisions in accordance with the relative national Electrical Engineers construction regulations (e.g. ÖVE, [Austrian] VDE, [German]...) must be observed. 8. Where not otherwise stated, installation and maintenance work on our appliances is exclusively to be carried out when disconnected from the power supply. This applies in particular to appliances which are normally supplied by low-tension current. 9. It is prohibited to make alterations to the appliances or to remove protective shields and covers. 10. Do not attempt yourself to repair an appliance after a defect, failure or damage, or to put it back into operation again. In such cases, it is essential you contact either your customer adviser or the Gantner Instruments hotline. We will make every effort to resolve the problem as quickly as possible. 11. Gantner Instruments accepts no responsibility for any injuries or damage caused as a result of improper use. HB_IDL101_E_V222.doc 3

6 12. Although every care is taken and we are continuously aiming for improvement, we cannot exclude completely the possibility of errors appearing in our documentation. Gantner Instruments therefore accepts no responsibility for the completeness or the accuracy of this manual. The right is reserved to make alterations, and we may carry out alterations at any time without giving prior notice. 13. Should you discover any fault with the product or in its accompanying documentation, or have any suggestions for improvement, you may confidently approach either your customer adviser or Gantner Instruments directly. 14. However, even if you just want to tell us that everything has functioned perfectly, we still look forward to hearing from you. We wish you a successful application of our appliances. We will be pleased to welcome you as a customer again soon. Contact address / manufacturer: Montafonerstrasse 8 A Schruns/Austria Tel.: Fax: office@gantner-instruments.com Web: Industriestraße 12 D Darmstadt Tel.: Fax: testing@gantner-instruments.com Web: 4 HB_IDL101_E_V222.doc

7 TABLE OF CONTENTS TABLE OF CONTENTS 1. GENERAL PRELIMINARY REMARKS On This Manual Important Notice Contact for Inquiries SYSTEM DESCRIPTION System Overview Range of Application Features of Performance Configuration Software ICP INSTALLATION Mounting / Fixing Protective System Ambient Temperature Front of the Appliance / Pin Assignment Connection Technique Power Supply Grounding Lightning Protection Bus Connection Sensor Connection Several Sensors at one Module Module Jack ICM Cold Junction Terminal ICJ STRUCTURE OF THE BUS TOPOLOGY Bus interface Bus Structure Number of Parties Transmission Speed and Line Length Bus Cable Bus Plug Bus Termination Shielding PC Bus Connection Equipotential Bonding Adjustment of Address and Baud Rate SIGNAL PROCESSING Analog Inputs Digital Inputs/Outputs Internal Reference Voltage Internal Processing Measurement Rate Signal Preparation FUNCTIONAL DESCRIPTION Analog Input Variable HB_IDL101_E_V222.doc 5

8 TABLE OF CONTENTS 5.2. Analog Output Channel Digital Input Variable Digital Output Variable Arithmetic Channel Setpoint Variable Alarm Variable Threshold Values Error Handling MASTER FUNCTION Master Function Normal Mode Transparent Mode DATA STORAGE General Remarks to Data Storage Modes of Data Storage No Data Storage Continuous Data Storage Conditional Data Storage Conditional Data Storage with Zoom Function INITIATION AND TEST Before Connecting the Supply After Connecting the Supply Configuration of the Data Logger COMMUNICATION General Remarks Bus Interface Bus Protocol Character Formats Output Format ASCII-Protocol Transmission Sequence Telegram Format Instruction Set Instruction Parameters PROFIBUS-Protocol Transmission Sequence Telegram Format Instruction Set Instruction Parameters MODBUS-Protocol Transmission Sequence Telegram Format Instruction Set Register Contents Sample Program SPECIFICATIONS Power Supply Signal Inputs/Outputs Signal Processing HB_IDL101_E_V222.doc

9 TABLE OF CONTENTS Analog Inputs (6 per Module) Measurement of Voltage Measurement of Current Measurement of Resistance Analog Output (1 per Module) Digital Inputs/Outputs (6 per Module) Interfaces Operating Conditions Electromagnetic Compatibility Chassis Circuit Accessories SIMPLIFIED DRAWINGS Front View Side View A. PINOUT ARRANGEMENTS FOR ANALOG SENSORS B. PINOUT ARRANGEMENTS FOR DIGITAL SENSORS HB_IDL101_E_V222.doc 7

10 GENERAL PRELIMINARY REMARKS 1. GENERAL PRELIMINARY REMARKS 1.1. On This Manual The manual for the appliance on hand contains all important information concerning the function, installation and initiation of the Intelligent Datalogger IDL101. Descriptions of the Configuration Software ICP100 are available as a short description on CD with the PC-software Important Notice Make sure to use the Datalogger IDL 101 exclusively in accordance with the notices, technical data and operating conditions mentioned in this manual. In case of inexpert handling or wrong application possible disturbances, measuring errors, effects on or from other appliances and facilities as well as possible endangering of human lives or tangible assets cannot be excluded! Therefore if you have not yet worked with the Datalogger IDL 101, you should first of all study the manual on hand thoroughly. While initiating or operating the appliance or in case service is required always observe the notices given in this manual. Please note further that there are other special regulations to be observed in case of application in potentially explosive surroundings (EExe, EExi,...). These are not, however, the subject of this manual, which only explains the general use of the Datalogger IDL Contact for Inquiries In case of inquiries concerning the Datalogger IDL 101 please turn to the branch in charge of you or directly to one of the Gantner Instruments-branch offices. The addresses, phone and fax numbers are located on the inner side of the cover. 8 HB_IDL101_E_V222.doc

11 SYSTEM DESCRIPTION 2. SYSTEM DESCRIPTION 2.1. System Overview The Datalogger IDL 101 is part of a complete system for the distributed recording and processing of sensor signals and digital status information. The general term for this system of Intelligent Sensor Modules is "ISM". Several system variants of the Intelligent Sensor Modules ISM are available for the various applications. Basically these variants are distinguished by the number of their digital and analog inputs and outputs, by the number of configurable sensor variables, by their display options and operating variants and by the number of arithmetic functions. Thus there are two series of devices at the moment: The modules of the series "100", where the ISM 111, ISM 112, IDL 100 and IDL 101 belong to, are free configurable, multi-variable sensor modules Range of Application The most varying measurement tasks can easily be solved by means of the different analog inputs and in combination with the force output, which provides the local power supply for the transducers. Some typical applications are e.g. measurement of temperature via resistance pyrometers or thermo couples, pressure measuring by means of wire strain gauges, or position measuring and weight measurement by displacement transducers and force transducers. With these applications the Datalogger IDL 101 supports measuring methods with 2- and 4-wire technique. With measurements of temperature via thermocouples you can also work with an internal cold junction compensation (referred to terminals) in addition to the external cold junction compensation. The preparation of signals required in accordance with the sensors used, such as amplification, linearization, offset correction etc. can be adjusted individually per software. An external amplifier is not required. The 16 digital signal in-/outputs can be individually configured as inputs and/or outputs. The digital signal inputs can be used, among other things, to connect switches, approximation initiators, digit emitters and oscillators. Thus status indications can be collected and tasks like e.g. position measuring, displacement measurements, angular measurements, frequency measurements and timings can be carried out. Status signals and alarm messages can be output at the digital in-/outputs if they are configured as outputs. These signals can be used to control indication devices like lamps or sound generators or they can be used for further processing. All data can be transmitted via the integrated RS485 communication interface to an overriding control (PLC) or to a computer (PC). Up to 127 modules can be connected with the two-wire line over distances of several 100 m (328 ft). At the same time the communication interface serves the purpose of centrally programming and configuring the Datalogger IDL 101 for the concrete application via bus from a PC. With an RS 232 interface either a point to point connection over 20 m is possible only but on the other hand all functions of the RS-485 interface are available. A corresponding Configuration Software ICP 100, executable on usual commercial PCs under Windows, is part of the ISM-system. HB_IDL101_E_V222.doc 9

12 SYSTEM DESCRIPTION 2.3. Features of Performance The features of performance of the Datalogger IDL 101 are the following: Function: measurement inputs for all common types of sensors for current, voltage, resistance and thermocouples (with ICJ104) several and different sensors can be connected simultaneously measured values are monitored as to programmable threshold values detection of sensor errors or line break detection of communication errors programmable error handling Calculation of average value Internal storage 512 kb RAM Inputs and Outputs: 6 analog inputs (2- and 4-wire) 1 analog output 16 digital inputs/outputs (configurable) Power Supply: power supply: VDC all connections protected against excess voltage, excess current and polarity conversion battery operation due to low power consumption possible Display and Operation: status-led for digital inputs/outputs status-led for operation and malfunction Measured Value Processing: linearization, scaling and conversion into physical units carried out by the data logger option to adjust, modify or set the processing parameters individually 512 kb RAM programmable averaging non-volatile storage for program, parameters and data 10 HB_IDL101_E_V222.doc

13 SYSTEM DESCRIPTION Configuration: configurable with PC-software under Windows menu-driven sensor selection in plain text free configuration of altogether 32 variables database for the most common sensors definition of user-specific sensors default of type of measurement and principle of measurement display of pin assignment input of linearization setting of limit values programmable error handling arithmetic combination of sensor variables maximum and minimum indicator function configuration on file (offline-operation) configuration via bus (online-operation) configuration of sampling rate and averaging interval time controlled outputs master function Programming: loading of a new download program allocation of address, baud rate, character format and protocol via bus automatic search for all connected data loggers independent from the defined bus parameters Communication: integrated RS 485 and RS 232 communication interface master capability of the RS 485 interface autonomous functioning independent of overriding systems definition of the transmission protocol (ASCII, PROFIBUS and MODBUS) definition of the telegram format (startbit/stopbit/length/parity) definition of the output format (field length/decimals/unit) simple instruction set Shell: compact structural shape attractive design fast mounting snap-on mounting on DIN rail 35 mm (1.4 inch) protection system IP20 detachable terminal strip separate Cold Junction Terminal Module Jack HB_IDL101_E_V222.doc 11

14 SYSTEM DESCRIPTION 2.4. Configuration Software ICP 100 The 32-bit Configuration Software ICP 100 for Windows serves to configure and adjust the sensor modules of the 100 series (e.g. ISM 111, ISM 112, Datalogger IDL 100 and IDL 101) individually to their desired application. The channels can be defined in the Variable Settings Table by simple mouse clicks. Additional sensors can be created at any time and inserted to the database. The signals will be linearized, scaled and formatted automatically. With the new function editor sensor signals can be connected with mathematical and logical functions. Also the adjustment of PID controllers is much easier now. At start up of the Configuration Software ICP 100 the bus will automatically be searched for modules. Independent on the protocol and baud rate all found devices will be listed. A new feature is the possibility to configure several modules simultaneously. This offers an easy way to copy a configuration from one device to another. At the following pages a configuration example of an ISM 111 is shown by a screen picture of the Variable Settings Table with descriptions of the different columns. The entire configuration of a module can be made in a window of the Configuration Software: 12 HB_IDL101_E_V222.doc

15 SYSTEM DESCRIPTION Column 1 The type of variable is indicated by a short designation. Up to 32 variables can be input and parameterized for the Datalogger IDL 101. The short designations and corresponding channels are: AI : Analog Input Channel AO : Analog Output Channel DI : Digital Input Channel DO : Digital Output Channel AR : Arithmetic Channel SP : Setpoint Channel AL : Alarm Channel CO : Controller Channel Column 2 A variable indication with max. 20 characters can be given for each sensor variable. Column 3 The type of sensor connected appears for any Analog Sensor Variables. The sensor can be selected from a database, which can be expanded by further user-defined sensors. This field remains empty for variables with no sensors connected. Column 4 The type of measurement is displayed. For analog and digital sensor variables the following types of measurement are available: Analog Sensors Measurement of Voltage - Single ended Measurement of Voltage - differential Measurement of Current Measurement of Resistance - 2-Wire Technique Measurement of Resistance - 3-Wire Technique Measurement of Resistance - 4-Wire Technique Resistance Bridge - 4-Wire Technique Resistance Bridge - 6-Wire Technique Potentiometric Measurement Thermocouples - Cold Junction Compensation Thermocouples - Differential Input Current Output, Var. Between ma Digital Sensors Digital Status Recording Digital Frequency Measurement Digital Progressive Counter Digital Up/Down Counter Digital Quadrature Counter Interval Counter Digital Input Set Status Output - Host-Controlled Status Output, Process-Controlled Pulse-Width Modulated Output Digital Output Set Logic Output Table 2.1 Types of measurement for analog and digital sensors HB_IDL101_E_V222.doc 13

16 SYSTEM DESCRIPTION Column 5 The pinout arrangements for analog and digital sensor variables are represented graphically, depending on the type of measurement. The sensors must be connected to the Sensor Module according to these graphics. Column 6 The PIN assignment is displayed for analog and digital sensor variables, determined by the Configuration Software ICP 100. The terminals are allocated with ascending variable numbers from AIn 1, DIn1, resp. I/O 1 upward. Notice: The PIN assignment can be influenced by the user only by the sequence of the configured sensors. Column 7 The format in which data is to be transmitted via the bus is indicated as a format string with decimal point and unit. For transmission and representation as ASCII-string the unit, field length and number of decimals are indicated. For transmission in binary format, Boolean, Integer or Real is indicated in addition to these. The measured values and the corresponding transmitted values can have different units. The conversion between the measured values and the transmitted values can be defined for each sensor variable separately. Column 8 Different range and error settings can be defined for each sensor, depending on the type of variable. Possible settings for each variable and type of measurement are listed in the Short Description of the Configuration Software ICP 100. Column 9 Various additional functions like filter settings, time base, logic formulas, threshold selection, etc. can be given for the individual sensor variables, depending on their type. Possible additional functions for each variable and type of measurement are listed in the Short Description of the Configuration Software ICP 100. In the Module Settings window the location, date and name of the user will be defined. 14 HB_IDL101_E_V222.doc

17 SYSTEM DESCRIPTION Features of the ICP 100: Configuration: Free configuration of 32 channels Database of the most common sensors Definition of user-specific sensors Definition of type and principle of measurement Display of PIN assignment Input of linearisation Determination of measurement range Programmable error handling Arithmetic combination of sensor channels Maximum and minimum indicator function Configuration on file (offline-operation) Configuration via bus (online-operation) Programming: Loading of a new download program (also for protocols) Allocation of address, baud rate via bus Additional functions: Signal filtering Averaging Test and initiation: Read out of sensor channels Pre-setting of setpoint channels Controlling of digital outputs Fine adjustment Tare Reset HB_IDL101_E_V222.doc 15

18 INSTALLATION 3. INSTALLATION 3.1. Mounting / Fixing The Datalogger IDL 101 has a snap-on mounting for installation on standard profile rails 35 mm (1.4 inch) according to DIN EN The four straps on the backside of the module will perform the mounting on the DIN rail. First you push the two straps on the bottom behind the notch of the DIN rail and then you press the module on the DIN rail until the two straps on the top snap in. In order to take the module off the DIN rail slide the module sideward off the rail or in case it is not possible lift the module slightly so that the straps on the top get off the notch and the module can be taken off easily by pulling it off the DIN rail Protective System The Datalogger IDL 101 has an IP20 protective system. If required by the operating site, the modules are to be installed e.g. in a splash-proof or presswater-resistant shell, as known from electrical installation engineering Ambient Temperature The permissible ambient temperature for the Datalogger IDL 101 in operation ranges from -30 C to +60 C. The permitted storage temperature is between -40 C and +85 C. 16 HB_IDL101_E_V222.doc

19 INSTALLATION 3.4. Front of the Appliance / Pin Assignment At the front of the Datalogger IDL 101 there are the attachment accessories and display elements described in the following figure V 0 V A B SUPPLY RS 485 ADR RX TX RS 232 COM I/O 01 I/O 02 I/O 03 I/O 04 I/O 05 I/O 06 I/O 07 I/O 08 I/O 09 I/O 10 DIGITAL I/O 11 I/O 12 I/O 13 I/O 14 I/O 15 I/O 16 1 INTELLIGENT DATA LOGGER RUN ERR AOut Figure 3.1 Front of the IDL 101 Elements: Number Meaning Number Meaning 1 Status LEDs for Digital I/Os 6 6 analog inputs 2 LED RUN (green) 7 Power supply 3 LED ERR (red) 8 RS 485 interface 4 Rapid Bus Link Plug 9 RS 232 interface 5 Analog Output digital I/Os Table 3.1 Elements on the front of the IDL 101 Pin Assignment: terminal meaning terminal meaning A RS485-bus interface A I/Ox Digital I/Ox B RS485-bus interface B Supply for analog Input VDC voltage supply + Analog Input + Ground 0 V voltage supply - Analog Input Ground RX RS232 Receive AGND Analog Input Ground+ TX RS232 Transmit AOUT + Analog Output + COM RS232 Ground AGND analog output ground * The terminal designations A and B are exchanged, compared with the PROFIBUS-definitions, for all devices of the ISM series 100 and the Datalogger IDL 101. This means that in multi-vendor-systems the bus lines A and B must be exchanged when they are connected to a device of the ISM-line or a Datalogger IDL 101. Table 3.2 Pin assignment HB_IDL101_E_V222.doc 17

20 INSTALLATION 3.5. Connection Technique connection technique: plug-in terminal screws nominal cross section: 1.5 mm² (0.002 square inch) unifilar/fine-strand (AWG 16) length on which the wire has to be stripped : 6 mm (0.2 inch) The wires are connected with the module by means of terminals. The terminal screws are integrated captively into the terminal strips. All terminal strips are pluggable and can be detached from the module. The best way to take the pluggable terminal strips off the module will be performed by assistance of a small screwdriver placed as a lever between terminal strip and module front. No more than 2 leads should be connected with one clamp. In this case the leads should have the same conductor cross section. For the binding of stranded wire we recommend the use of wire end ferrules. Notice: The connection of the wiring respectively the plug out and plug in of the terminal strip is only allowed in a power off status. Notice: In order to prevent disturbing influences on the sensor signals and the module shielded wires have to be used for the power supply, the bus connection and the signal lines Power Supply U+ U- Power Supply Voltage Range VDC V 0 V A B SUPPLY RS 485 RX TX RS 232 COM I/O 01 I/O 02 I/O 03 I/O 04 I/O 05 I/O 06 I/O 07 I/O 08 I/O 09 I/O 10 I/O 11 I/O 12 I/O 13 I/O 14 I/O 15 I/O 16 Power Input max. 1 W ADR DIGITAL INTELLIGENT DATA LOGGER RUN ERR AOut + Protection excess current (0.1A slow. blowing fuse) excess voltage polarity conversion Figure 3.2 Connection of the distribution voltage Non-regulated DC voltage between +10 and +30 VDC is sufficient for the power supply of the Datalogger IDL 101. The input is protected against excess voltage and current and against polarity conversion. The power consumption remains approximately constant over the total voltage range, due to the integrated switching regulator. 18 HB_IDL101_E_V222.doc

21 INSTALLATION Due to their low current consumption (max. 100 ma at 12 VDC) the modules can also be remote-fed via longer lines. Several modules can be supplied parallel within the permissible voltage range and considering the voltage drop in the lines. The supply lines can also be installed in one cable, together with the bus line, if required. In order not to charge the distribution voltage of the modules unnecessarily and to avoid unnecessary line troubles, a separate power supply is recommended for sensors with a large current requirement Grounding The shell of the Datalogger IDL 101 has to be connected to earth. For this purpose an M3-thread for attaching an grounding cable is located on the back side of the shell. Back View Earthing Connection Figure 3.3 Grounding Connection at the ISM 3.8. Lightning Protection If the supply, signal and data lines are installed between several buildings, appropriate protections against lightning must be made, e.g. by: laying the cables in metal tubes which are earthed on both sides laying the cables in concrete cable ducts with fed-through arm using a lightning-protected-wire The lines must be wired with protection elements against excess voltage at the point where they are lead-in into a building, e.g. with varistors or excess voltage conductors filled with rare gas. HB_IDL101_E_V222.doc 19

22 INSTALLATION 3.9. Bus Connection In general the data logger is connected with the bus by applying the signal leads A and B of the incoming bus cable and A' and B' of the outgoing bus cable together to one terminal on the module (figure 3.4). Alternatively the bus can also be connected by a "stub cable" (figure 3.5). Owing to the removable terminal strip, the bus connection to other modules remains valid, even if one module has to be replaced by another. Notice: The terminal designations A and B are exchanged, compared with the PROFIBUS-definitions, for all devices of the ISM series 100. This means that in multi-vendor-systems the bus lines A and B must be exchanged when they are connected to a device of the ISM series. Notice: The stub cable should be as short as possible, not longer than 30 cm (12 inch). A A B B RS 485 Fielbus V 0 V A B RX TX COM I/O 01 I/O 02 I/O 03 I/O 04 I/O 05 I/O 06 I/O 07 I/O 08 I/O 09 I/O 10 I/O 11 I/O 12 I/O 13 I/O 14 I/O 15 I/O 16 SUPPLY RS 485 RS 232 ADR INTELLIGENT DATA LOGGER DIGITAL RUN ERR AOut + Figure 3.4 Connection of the IDL 101 to the bus A A B B RS 485 Fieldbus V 0 V A B RX TX COM I/O 01 I/O 02 I/O 03 I/O 04 I/O 05 I/O 06 I/O 07 I/O 08 I/O 09 I/O 10 I/O 11 I/O 12 I/O 13 I/O 14 I/O 15 I/O 16 SUPPLY RS 485 RS 232 ADR INTELLIGENT DATA LOGGER DIGITAL RUN ERR AOut + Figure 3.5 Connection of the IDL 101 to the bus by a stub cable 20 HB_IDL101_E_V222.doc

23 INSTALLATION Sensor Connection The analog and digital signal inputs and outputs are wired according to measurement task, to the transducer (sensor) that is used, and to the number of connected sensors. The pinout arrangements for the various types of measurement will be described in chapter 6. The respectively valid pin assignment is determined by means of the Configuration Software ICP100. Since the digital outputs are "passive" the process of external elements always requires an external current supply. In case of larger loads this should be independent of the module supply. At the connection of inductive loads a connection with a free wheeling diode is recommended in order to prevent possible disturbances by e.g. induced voltage. VP VP 22 k Reverse Diode Figure 3.6 Installation of a reverse diode To the digital outputs you can connect directly: signal lamps, small relays, switching relays for larger loads, acoustic signal installations, buzzer respectively beeper etc., as long as the connected loads are not exceeding the values described in the technical specifications chapter Several Sensors at one Module The Datalogger IDL 101 can take up and process sensor signals from several heterogeneous sensors simultaneously. As many sensors can be connected as there are analog and digital signal inputs and outputs available. At the Datalogger IDL 101 this means the maximum of 22 sensors, 6 analog and 16 digital sensors Module Jack ICM 100 The Intelligent Sensor Modules ISM of the series "100" have connection potential on the left and on the right side. Via these the bus and the power supply can be led from one module to the next by means of the Module Jacks ICM 100. This type of bus connection and of power supply is particularly advantageous if several modules are mounted on one common profile rail side by side. In this case the connection via the terminals can be dropped, except for one module. It is also possible to connect different modules of the line "100" via Module Jacks (e.g. ISM 111 with ISM 111, ISM 112 and IDL 100) HB_IDL101_E_V222.doc 21

24 A B A B IDL 101 INSTALLATION Notice: It is necessary to take care of the flow of current at the Module Jack and Sensor Module that it is no higher than permitted. Thus, the power supply preferably should be led to the center of the module line. For the IDL 100 it is the same reason, that it is not allowed to connect more than 6 modules via the Module Jacks ICM 100 in one line. A B U+ U V 0 V SUPPLY A B RS 485 RX TX RS 232 COM I/O 01 I/O 02 I/O 03 I/O 04 I/O 05 I/O 06 I/O 07 I/O 08 I/O 09 I/O 10 I/O 11 I/O 12 I/O 13 I/O 14 I/O 15 I/O V 0 V B U S SUPPLY V 0 V C NO B U S SUPPLY RELAY ADR INTELLIGENT DATA LOGGER DIGITAL ADR ADR RUN ERR AOut + OUT + OUT - OUT + OUT - UFORCE A N A L O G In 1 In 2 In 3 AGND Profile Rail 35 mm (1.4 inch) Rapid Bus Link Plugs ICM 100 Figure 3.7 Connection of two ISM modules to the Datalogger IDL 101 with a Module Jack ICM HB_IDL101_E_V222.doc

25 INSTALLATION Cold Junction Terminal ICJ 104 At temperature measuring via thermocouples the Datalogger IDL 101 offers the possibility of internal cold junction compensation. For these purposes a separate terminal strip called ICJ 104 is available. The ICJ 104 must be ordered additionally as a accessory part. At temperature measuring via thermocouples with internal cold junction compensation the terminal strip for the analog inputs simply will be replaced with the cold junction compensation terminal strip ICJ 104, which is colored green instead of the common grey color in order to show the difference. A Pt100-resistance is placed between the terminal and AGND in the ICJ terminal strip. Via the resistance thermometer the Datalogger IDL 101 determines the terminal temperature and executes the cold junction compensation. Up to 6 ICJ 104 can be connected to one IDL 101. Figure 3.8 Cold Junction Terminal ICJ 104 HB_IDL101_E_V222.doc 23

26 STRUCTURE OF THE BUS TOPOLOGY 4. STRUCTURE OF THE BUS TOPOLOGY The coupling of the Datalogger IDL 101 to a host computer can be performed via the integrated RS-485 interface or via the integrated RS-232 interface. The RS-232 interface is suitable only for point-to-point connections over a maximum distance of 20 m. In the Normal Mode the Datalogger IDL 101 permanently sends the data to both interfaces, different are only the physical properties of the interfaces. To arrange a system only the RS-485 interface is useful. In the Transparent Mode the data are transferred from RS-232 to the RS-485 interface. Bus interface: RS 485, half duplex Bus topology: line pattern, closed at both ends by the characteristic impedance, stub cable to the party max. 30 cm (12 inch). Bus medium: shielded, twisted pair cable Transmission speed: ASCII-protocol: 2400 / 4800 / 9600 / / bps PROFIBUS-protocol: 9600 / bps MODBUS-protocol: 2400 / 4800 / 9600 / / bps Line length: depends on the transmission speed, max. 1.2 km (0.75 miles) per bus segment, max. 4.8 km (3 miles) via a physical bus string with 3 repeaters Number of bus users: max. 32 bus users per bus segment, max. 127 bus users via a physical bus string. 24 HB_IDL101_E_V222.doc

27 STRUCTURE OF THE BUS TOPOLOGY 4.1. Bus interface The bus interface in the sensor modules is an RS485 interface. Its advantages over traditional RS232 connections are a larger number of users, its greater transmission speed, its greater immunity to interfering and the long line length that are mostly required m (3.900 ft) 1000 m (3.250 ft) 100 m (325 ft) 600 m (1.950 ft) RS 422 RS 485 transmission line length 4.2. Bus Structure RS ,5 K 10 m (32.5 ft) 1 K 10 K 100 K 1 M 10 M transmission speed Figure 4.1 Interrelation between transmission speed and line length [bps] The bus structure is a line structure where each bus segment will be blanked off with characteristic impedance on both ends. Branches can be build up over a bi-directional signal amplifier, so called repeater. Other than that branches are not permitted (no tree topology). The max. stub to a user is not allowed to exceed 30 cm (12 inches). The following figures show a few examples for a possible set-up of bus topologies. The meaning of the symbols is: : bus user : repeater : bus termination.... Figure 4.2 Simple line structure Figure 4.3 Extended line structure HB_IDL101_E_V222.doc 25

28 STRUCTURE OF THE BUS TOPOLOGY... : : : : Figure 4.4 Line structure with branches 4.3. Number of Parties The RS485 interface permits the simultaneous connection and operation respectively of a maximum of 32 bus users per bus segment. Further bus segments can be constituted via bi-directional repeaters, and thus the number of bus users can be raised to max Transmission Speed and Line Length The transmission speed with the Datalogger IDL 101 can be adjusted for each protocol. The permissible line lengths depend on the transmission speed. With transmission speeds lower than kbps these line lengths amount to 1,200 m (3,900 feet) per bus segment; with kbps the line length is reduced to 600 m (1,900 feet) per bus segment (specifications according to USA-standard EIA RS422-A). Thus with lower baud rates and with 3 repeaters topologies with a dimension of max. 4.8 km (3 miles) can be set up. transmission line length speed without repeater with 3 repeaters kbps max. 1,200 m (3,900 feet) max. 4.8 km (3 miles) kbps max. 600 m (1,900 feet) max. 2.4 km (1.5 miles) Table 4.1 Interrelation between transmission speed and line length Notice: These specifications refer to bus cables with a conductor cross section of 0.22 mm² and a permissible signal attenuation of max. 6 db referred to the overall length. According to previous experience the line length can be twice as long if a two-wire circuit with a conductor cross section of at least 0.5 mm² is used. 26 HB_IDL101_E_V222.doc

29 STRUCTURE OF THE BUS TOPOLOGY 4.5. Bus Cable For setting up a bus topology a shielded twisted pair with at least two leads and the following electric characteristic values must be used: characteristic impedance : Ω at f > 100 khz operating capacity : max. 60 pf/m conductor cross section : min mm² (AWG 24) attenuation : max. 6 db referred to the overall length 4.6. Bus Plug For installing the bus cable and the bus interface, 9-channel D-subminiature plugs and sockets are used. The pin assignment for the RS485 connection according to PROFIBUS is given in table 4.2. plug pin RS485 notation signal meaning 1 5 DB B / B - C / C - - A / A - Shield RP RxD/TxD-P CNTR-P DGND VP RP RxD/TxD-N CNTR-N Shield, Protective Ground Reserved for Power Receive/Transmit-Data-P Control-P Data Ground Voltage Plus Reserved for Power Receive/Transmit-Data-N Control-N Table 4.2 Pin assignment D-subminiature plug according to PROFIBUS The signal leads A and B (and Shield) are absolutely obligatory for a (shielded) connection. All others can be installed together with these signal leads if required Bus Termination In order to avoid signal reflections on the bus, each bus segment has to be blanked off at its physical beginning and at its end with the characteristic impedance. A terminating resistor R t is installed between the bus leads A and B for this purpose. In addition to that the bus lead A is connected via a pull-up resistor R u to potential (VP) and the bus lead B is connected via a pull-down resistor R d to ground (DataGround). These resistors provide a defined quiescent potential in case there is no data transmission on the bus. This quiescent potential is level high. HB_IDL101_E_V222.doc 27

30 STRUCTURE OF THE BUS TOPOLOGY VP (6) VP = +5V : A (8) B (3) bus cable R R R u t d R u R t R d = 390 Ω ± 2%, at least 1 4 watt = 150 Ω ± 2%, at least 1 4 watt = 390 Ω ± 2%, at least 1 4 watt DGND (5) Figure 4.5 Bus Termination Notice: The terminal designations A and B are exchanged, compared with the PROFIBUS-definitions, for the Datalogger IDL 101 and all devices of the ISM series 100. This means that in multi-vendor-systems the bus lines A and B must be exchanged when they are connected to a Datalogger IDL 101 and a device of the ISM-line. Notice: The figures in parentheses in figure 4.5 indicate the pin number for the connection via the 9-channel D-subminiature plug. The bus termination can be carried out via external resistors and a separate power supply, independent of the module, according to figure 4.6. In this case we recommend the use of the indicated resistors for the bus termination. Or the bus termination is connected with the bus users at the beginning and at the end of a bus line. Most of the RS- 485 connections for controls, computers, repeaters, interface converters, etc. offer this possibility. This possibility is also given with the Datalogger IDL 101. Via the bus termination plug IBT 100 which is available as accessory and installed at the right port on the front side of the device, the bus termination at the data logger can be additionally connected. Two jumpers are integrated in the bus termination plug. These provide the connection between the bus and the bus termination in the data logger. Notice: Instead of the bus termination module IBT 100 separate jumpers can also be used for the bus termination. In this case, please make absolutely sure that the jumper clips are installed as indicated, and that the bus leads or the bus termination are not short-circuited by mistake! 28 HB_IDL101_E_V222.doc

31 STRUCTURE OF THE BUS TOPOLOGY Rd Rt Ru A B U+ U- Datalogger without connected Bus Termination I/O 08 I/O 09 I/O 10 I/O 11 I/O 12 I/O 13 I/O 14 I/O 15 I/O 16 DIGITAL RUN ERR AOut + Jumpers Rd Rt Ru A B U+ U- Datalogger with connected Bus Termination Figure 4.6 Bus termination at the IDL Shielding In case of increased interference we recommend the use of shielded bus cables. Then, a shielding also should be done for the cables from power supply and for the signal cables. There are varying experiences and recommendations concerning the kind of shield connection. In general the shield should be connected with the protective grounding (not DataGround!) at each bus connection. If necessary the shield should be applied additionally several times along the course of the cable. With smaller distances, e.g. with stub cables, the disturbance response often is improved if the shield is only applied to the stub cable exit. Bus parties such as controls (PLCs), computers (PCs), repeaters and interface converters, a.s.o., mostly offer the possibility of applying the shield directly to the appliance or to separate shield rails. The shield rails offer the advantage of preventing possible interfering signals from being led to the appliance via the shield. These are already branched off before via the protective grounding. The Datalogger IDL 101 does not have a direct shield connection on the device itself. Here the shield of the bus cable can be connected to earth e.g. by so-called shield clamps. HB_IDL101_E_V222.doc 29

32 STRUCTURE OF THE BUS TOPOLOGY Central Earthing Point Shield Insulation RS 485 Field Bus V 0 V A B RX TX COM I/O 01 I/O 02 I/O 03 I/O 04 I/O 05 I/O 06 I/O 07 I/O 08 I/O 09 I/O 10 I/O 11 I/O 12 I/O 13 I/O 14 I/O 15 I/O 16 SUPPLY RS 485 RS 232 ADR INTELLIGENT DATA LOGGER DIGITAL RUN ERR AOut + Figure 4.7 Grounding of the bus line shield at the IDL101 Notice: The screen must not be connected with the ground (0V) of the power supply! Notice: The screen should always be connected to earth with a large surface and low-inductive PC Bus Connection The bus interface of the sensor module is based on the RS 232 and RS 485 standard. Since most of the hosts are "only" equipped with RS 232 interfaces, at longer distances between host and data logger an interface converter or a plug-in board with RS-485 drivers is required for conversion purposes. Gantner Instruments offers a compact interface converter with integrated mains power supply called ISK 200. Mains power supply, bus connection and a separate 24 VDC-output are dc decoupled. The interface converter is also applicable for remote power feeding. Further more the interface converter ISK 200 offers the opportunity to connect in addition the necessary bus termination with a switcher. The converter is used as a table device. Further more the module IRK 100 is available. This module can be used as a repeater or as a converter. It offers also the opportunity to connect the necessary bus termination with a switch. The Repeater/Converter IRK 100 has a snap-on mounting for installation on standard profile rails (DIN rail) 35 mm (1.4 inch) according to DIN EN HB_IDL101_E_V222.doc

33 RX TX COM COM A B RECEIVE TRANSMIT POWER V 0V COM' A' B' IDL 101 STRUCTURE OF THE BUS TOPOLOGY ON OFF SUPPLY R S ' ISK100 RS-485 / RS-232 CONVERTER Gantner IRK 100 REPEATER / CONVERTER BUS TERMINATION ON OFF BAUDRATE k Gantner RUN ERR R S R S ON OFF Interface Converter ISK 200 Repeater/Converter IRK 100 Figure 4.8 Interface Converters ISK 200 and IRK Equipotential Bonding The potential difference between the actual physical voltage potentials (that are allocated to a logic signal status) DGND of all connections with the bus must not exceed ± 7 Volt. If this cannot be guaranteed, an equipotential bonding has to be created. For most of the connections this means that the minus connection of the power supply has to be fedthrough as a compensating line from connection to connection Adjustment of Address and Baud Rate Before a control (PLC) or a computer (PC) can interchange data with a data logger via the bus, address and baud rate for the data logger have to be defined. The following points have to be taken into consideration in this connection: All devices have to be adjusted to the same baud rate. The same address must not appear twice in the bus topology. The setting variants for the bus parameters for the Datalogger IDL 101 are: Bus parameters ASCII-protocol PROFIBUS-protocol MODBUS-protocol address ,400 bps - 2,400 bps 4,800 bps - 4,800 bps baud rate 9,600 bps 9.6 kbps 9,600 bps 19,200 bps 19.2 kbps 19,200 bps 38,400 bps - 38,400 bps Table 4.3 Setting variants for address and baud rate for the Datalogger IDL 101 If no other specifications are made on delivery, the sensor modules have address 1 and baud rate 19,200 bps as default. The adjustment can be changed via the bus by means of the Configuration Software ICP100. HB_IDL101_E_V222.doc 31

34 STRUCTURE OF THE BUS TOPOLOGY Adjustment via bus with the Configuration Software ICP 100: The condition for adjusting address and baud rate via bus is that there must not be two sensor modules with the same address on the bus. Otherwise the bus connection has to be disconnected or the distribution voltage has to be interrupted for the duration of the adjustment with those sensor modules that have the same address as the module that is to be newly adjusted. The sensor module that is to be newly adjusted does not have to be set to the same baud rate as the PC by way of exception! Please note also our notice below! The adjustment or modification of address and baud rate via bus is always carried out together with the loading of a new sensor program by means of the Configuration Software ICP 100. The download is carried out as described in the short description for the Configuration Software ICP 100. From the LEDs at the front of the sensor modules you can see which sensor module is being newly adjusted at the moment. If the LED ERR changes from "off" to "flash", a new program is just being transmitted to the sensor module. The values are taken over as soon as the data transmission via bus has been successfully completed. Notice: The address 0 is provided for the PC in case of a transmission via PROFIBUS. This address can therefore not be assigned to the data logger. Notice: The address 127 is reserved for broadcast transmission in the PROFIBUS-protocol and may only be assigned for these cases. Adjusting via RS-232 interface with the configuration software: The Datalogger IDL 101 has as an additional to the RS-485 bus interface a RS-232 host interface. Configurations can be programmed over the RS-232 interface as well as over the RS-485 interface with the help of the configurations software ICP HB_IDL101_E_V222.doc

35 SIGNAL PROCESSING 5. SIGNAL PROCESSING The Datalogger IDL 101 has 6 analog inputs and 16 digital inputs/outputs. Several different sensors as well as acknowledgements and digital output signals can be connected and processed simultaneously Analog Inputs The analog inputs serve to collect sensor signals, or to acquire control values respectively. They are particularly conceived to measure voltages, currents and resistances. Every single input can be configured in its type of measurement, independent of the others. The Datalogger IDL 101 has altogether 6 equivalent analog inputs at disposal. Notice: Overloads of more than ±10 VDC will lead to false measuring results in the according analog input variable. Overloads of more than ±15 VDC do also have influence on the measuring accuracy of the other input variables Digital Inputs/Outputs The 16 digital inputs/outputs of the Datalogger IDL 101 can be configured - independent of each other - as inputs or as outputs. The current status (in/out) is signalized by one (for power saving via software disconnectable) LED each. As inputs the I/Os can be used for collecting acknowledgements, for measuring frequencies or for counting. Status information can be issued by the outputs in a digital format. The possibilities here are host-out and process-out. The digital inputs have an excess voltage protection (transil diodes), which comes into action at approx. 33 V. The maximum permissible input voltage amounts to 30 V. Input voltages between 3.5 VDC and 30 VDC are interpreted as logic LOW ("0"), input voltages lower than 1.0 V as logic HIGH ("1"). The maximum fan-in current amounts to 1.5 ma. signal level logic level + 3,5 V high low (0) + 1,0 V 0 V low high (1) Figure 5.1 Definition of signal levels and logic levels The outputs are open-collector outputs with a maximum voltage of 30 VDC and a maximum fan-out current of 100 ma. The outputs are internally connected to the power supply potential ( VDC) via a 22 kω pull-up resistor. HB_IDL101_E_V222.doc 33