High-precision Load Cell Unit <Type: NA0FA-LC1>

Transcription

1 series USER S MANUAL High-precision Load Cell Unit <Type: NA0FA-LC1> FEH530

2 Preface Thank you for purchasing Fuji Electric Programmable Controller MICREX-SX SPF Series. This user s manual describes the specifications of the high-precision load cell unit for the SPF series. Read this manual carefully to ensure correct operation and also read the corresponding user s manuals listed below. Title User s Manual Hardware, MICREX-SX series SPF User s Manual Instructions (Standard), MICREX-SX series SPF User s Manual Instructions (Standard), MICREX-SX series SPH User s Manual SX-Programmer Standard <Reference>, MICREX-SX series User s Manual Instructions (Expert), MICREX-SX series SPF User s Manual Instructions (Expert), MICREX-SX series SPH User s Manual SX-Programmer Expert <Reference>, MICREX-SX series User s Manual General Purpose Communication, MICREX-SX series SPF Manual No. Contents FEH526 FEH524 FEH588 FEH598 FEH525 FEH200 FEH257 FEH528 Describes the system configuration, hardware specifications and operations of units in the MICREX-SX series SPF. Describes the memory specifications and instructions specific to SPF series. Describes the memory, language and system definitions of the MICREX-SX series SPH (SX-mode, Standard loader). Describes the functions and the operations of SX-Programmer Standard. Describes the memory specifications and instructions specific to SPF series. Describes the memory, language and system definitions of the MICREX-SX series SPH (SX-mode, Expert loader). Describes the functions and the operations of SX-Programmer Expert. Describes the specifications of general purpose communication (RS-232C/RS485) units/boards of the MICREX-SX series SPF and how to create applications. * In addition to the above manuals, the following Fuji Electric Co.,Ltd.site offers various manuals and technical documents associated with MICREX-SX series. URL Notes 1. This manual may not be reproduced in whole or part in any form without prior written approval by the manufacturer. 2. The contents of this manual (including specifications) are subject to change without prior notice. 3. If you find any ambiguous or incorrect descriptions in this manual, please write them down (along with the manual No. shown on the cover) and contact FUJI.

3 Safety Precautions Be sure to read the "Safety Precautions" thoroughly before using the module. Here, the safety precautions items are classified into "Warning" and "Caution". Warning Caution : Incorrect handling of the device may result in death or serious injury. : Incorrect handling of the device may result in minor injury or physical damage. Even some items indicated by "Caution" may result in a serious accident. Both safety instruction categories provide important information. Be sure to strictly observe these instructions. Warning Neve touch any part of charged circuits as terminals and exposed metal portion while the power is turned ON. It may result in an electric shock to the operator. Turn OFF the power before mounting, dismounting, wiring, maintaining or checking, otherwise, electric shock, erratic operation or troubles might occur. Place the emergency stop circuit, interlock circuit or the like for safety outside the PLC. A failure of the PLC might break or cause problems to the machine. When using an expansion right side unit, be sure to mount a healthy unit to stop the SPF system with a fatal fault if the expansion right side unit is dropped. Unless a healthy unit is mounted, a dropout of the expansion right side unit is not detected and the SPF system continues operation in the state where the expansion right side unit is dropped.

4 Safety Precautions Caution Do not use one found damaged or deformed when unpacked, otherwise, fire, failure or erratic operation might be caused. Do not shock the product by dropping or tipping it over, otherwise, it might be damaged or troubled. Follow the directions of the instruction manual and user s manual when mounting the product. If mounting is improper, the product might drop or develop problems or erratic operations. Use the rated voltage and current mentioned in the instruction manual and user s manual. Use beyond the rated values might cause fire, erratic operation or failure. Operate (keep) in the environment specified in the instruction manual and user s manual. High temperature, high humidity, condensation, dust, corrosive gases, oil, organic solvents, excessive vibration or shock, might cause electric shock, fire, erratic operation or failure. Select a wire size to suit the applied voltage and carrying current. Tighten the wire terminals to the specified torque. Inappropriate wiring or tightening might cause fire, malfunction, failure or might cause the product to drop from its mounting. Contaminants, wiring chips, iron powder or other foreign matter must not enter the device when installing it, otherwise, fire, accident, erratic operation or failure might occur. Remove the dust-cover seals of modules after wiring, otherwise, fire, accident, erratic operation or failure might occur. Connect the ground terminal to the ground, otherwise, electric shock or erratic operation might occur. Periodically make sure the terminal screws and mounting screws are securely tightened. Operation at a loosened status might cause fire or erratic operation. Put the furnished connector covers on unused connectors, otherwise, erratic operation or failure might occur. Sufficiently make sure of safety before program change, forced output, starting, stopping or anything else during a run. Wrong operation might break or cause problems to the machine Engage the loader connector in a correct orientation, otherwise, an erratic operation might occur. Before touching the PLC, discharge any static electricity that may have been collected on your body. To discharge it, touch a grounded metallic object. Static electricity might cause erratic operation or failure. Be sure to install the electrical wiring correctly and securely, observing the directions of the instruction manual and user s manual. Wrong or loose wiring might cause fire, accident or failure. When disengaging the plug from the outlet, do not pull the cord, otherwiase, break of cable might cause fire or failure. Do not attempt to change system configurations (such as installing or removing expansion block) while the power is ON, otherwise, failure or erratic operation might occur. Do not attempt to repair the module by yourself, but contact your Fuji Electric agent, otherwise, fire, accident or failure might occur. To clean the module, turn power off and wipe the module with a cloth moistened with warm water. Do not use thinner or other organic solvents, as the module surface might become deformed or discolored. Do not remodel or disassemble the product, otherwise, failure might occur. Follow the regulations of industrial wastes when the device is to be discarded. The products covered in this user s manual have not been designed or manufactured for use in equipment or systems which, in the event of failure, can lead to loss of human life. Do not use the products covered in this user s manual for special applications, such as power plant, radiation facilities, railroad, space/flight equipments, lifeline facilities, or medical equipments, where a great effect on human life, body, society, major property or rights may be anticipated and high degree of safety is required. Be sure to provide protective measures when using the products covered in this manual in equipment which, in the event of failure, can lead to loss of human life or other grade results. External power supply (such as 24 V DC power supply) which is connected to DC I/O should be strongly isolated from AC power supply, otherwise, accident or failure might occur. (Use of EN60950 conforming power supply is recommended.) Do not use the peoducts covered in this user s manual in a residential environment.

5 Revision * The manual No. is printed at the bottom right of the cover of this manual. Printed on * Manual No. Revision contents Nov FEH530 First edition

6 Contents Preface Safety Precautions Revision Contents Section 1 Overview 1-1 Overview Section 2 Specifications 2-1 General Specifications Performance Specifications Names and Functions Wiring Dimensions Section 3 Programming 3-1 System Definition Overview of User FB for HLC (_CSPF_HLC) Specifications of User FB for HLC FB format Description of FB terminals How to Use the FB Initialization Normal operation Setting change Calibration Setting the tare weight Saving the setting values

7 Section 1 Overview 1-1 Overview Connecting a high-precision load cell unit (Type: NA0FA-LC1) (hereafter abbreviated as HLC) on the left of an SPF main unit enables data exchange with a load cell device. The figure below shows the entire configuration. Load cell device NA0FA-LC1 SPF main unit EXC+ SIG+ SIG- EXC- _CSPF_HLC User FB for HLC (Note) Notes: To access the HLC unit from the main unit, use the user FB for HLC _CSPF_HLC (for Standard or Expert). Fuji Electric Co.,Ltd. site (Fe Library) offers the FB. Search the FB by the name _CSPF_HLC and obtain it. 1-1

8 Section 2 Specifications 2-1 General Specifications Item Specification Remark Physical environmental conditions Mechanical service conditions Electrical service conditions Construction Cooling Operating ambient temperature Storage (transportation) temperature Relative humidity 0 to +55 C IEC to +70 C Pollution degree 2 (Note 1) Corrosion immunity Operating altitude 20 to 95%RH, no condensation (Transport condition: 5 to 95%RH, no condensation) Free from corrosive gases. Not stained with organic solvents 2000 m or less above sea level (Transport condition: 70 kpa or more) Vibration Half amplitude: 0.15mm, Constant acceleration: 19.6 m/s 2 Two hours for each of three mutually perpendicular axes, Total six hours (Note 2) (Note 3) Shock Acceleration peak: 98 m/s 2 Three times for each of three mutually perpendicular axes Electrostatic discharge Contact discharge: ±4kV, Aerial discharge: ±8kV IEC Radiated, radio-frequency, electromagnetic field EFT/B (Electrical fast transient/burst) 80 to 1000MHz (10V/m) 1.4 to 2.0 GHz (3V/m) 2.0 to 2.7 GHz (1V/m) Equipment power, I/0 power, AC I/O (unshielded): ±2kV Data communication, digital and analog I/O s (except AC unshielded I/O): ±1kV Lightning impulse surge AC equipment power: ±2kV common mode, ±1kV differential mode DC equipment power: ±0.5kV common mode, ±0.5kV differential mode Conducted radio frequency Power frequency magnetic field IEC IEC IEC kHz to 80MHz, 10V IEC Hz, 30A/m IEC Panel-mounted type (open equipment) Air cooling Notes: 1) Pollution degree 2: This pollution does not conduct usually, but under certain circumstances temporary conductivity occurs due to condensation. 2) The unit is fixed by screws to the control panel. When the unit is mounted to the DIN rail, care must be taken that vibrations or shocks will not occur. 3) In an environment where repetitive or continuous vibration occurs, be sure to take vibration-proofing measures. 2-1

9 Section 2 Specifications 2-2 Performance Specifications Item No. of input channels Resolution Data type of digital conversion value Load cell applied voltage Sampling period Max. measured voltage Specification 1 channel 24 bits (including a sign bit) INT type, DINT type 5V DC, 350 Ω 100 times/second -1mV to 39mV Input sensitivity, resolution 0.15µV/d or more (d = minimum scale) 1/60000 External wire connections Applicable wire size Status indication Isolation method Occupied words Parameter storage area External power supply Internal current consumption Dimensions Mass 8-pole terminal block (M3) x 2, Tightening torque: 0.59 to 0.78 N m AWG#22-18 * Be sure to use shielded twisted pair cables. 5V power supply display, ON when normal (red) Stable indicator (MD), Zero-point indicator (ZRO), Net weight indicator (NET), Gross weight indicator (GRS) Transformer (power supply) and photocoupler (signal) 0 word Calibration parameters and setting values are saved in the internal EEPROM. 24V DC, 48mA *Wiring length: 10m or less 5V DC, 120mA 40 (W) 90 (H) 80 (D) (mm) Approx. 140g 2-2

10 Section 2 Specifications 2-3 Names and Functions (1) Names 2) Terminal block 1) Status indication LED Nameplate (on the right side) 2) Terminal block Expansion cable connector DIN rail tab (2) Functions 1) Status indication LED Symbol Status Specification PWR ON (red) While 5V DC power is normally supplied. NET ON (red) Net weight measurement mode (When the tare weight is set to a value other than 0) GRS ON (red) Gross weight measurement mode (When no tare weight is set) MD ON (red) Stable indicator (When the measured wight is stable) ZRO ON (red) Zero-point indicator (When zero-point calibration is complete) 2) Terminal block These are terminals for 24V DC power supply to operate the unit and for load cell input signals. * For the wiring method, see 2-4 Wiring. 2-3

11 Section 2 Specifications 2-4 Wiring (1) 24V DC power supply 24V DC power supply (2) Connection example of 4-wire type load cell FG SIG- SIG+EXC-EXC+ Load cell cable Load cell EXC+ SIG+ Shield (3) Connection example of 6-wire type load cell FG SIG- SIG+EXC-EXC+ Load cell cable Load cell EXC+ SEN+ SIG+ EXC- SIG- EXC- SIG- SEN- Shield 2-4

12 Section 2 Specifications 2-5 Dimensions 20 2 Φ4.5 Unit: mm (97)

13 Section 3 Programming 3-1 System Definition Register the unit on the system definition screen. <Registration procedure> Open the system definition screen. Right-click the main unit, and then select Insert. The Module insert dialog box opens. select Expansion Left Side Unit for the module group type, and NA0FA-LC1 from the outline specification list box. Then, click the [OK] button to register the unit. 3-1

14 Section 3 Programming 3-2 Overview of User FB for HLC (_CSPF_HLC) The user FB for HLC (_CSPF_HLC) is used to exchange data between an SPF main unit and a high-precision load cell (HLC) unit that has a MODBUS interface. The SPF main unit that is a master sends/receives data to/from the HLC unit that is a MODBUS slave device. The SPF main unit communicates with the HLC unit via the MODBUS communication protocol. The user FB for HLC enables you to use the functions of the HLC unit without considering the communication details. NA0FA-LC1 SPF main unit _CSPF_HLC FB Slave Modbus RTU communication Master This FB performs the following operations. 1) Initialization of a communication port The FB initializes a port to be used (setting of transmission speed, parity bit, etc.). 2) Data sending/receiving function The FB sends a request from an application program in the SPF main unit to the HLC unit and outputs a received response message to the application program. <FB operation conditions> One FB is required for one HLC unit. The communication port is fixed to PORT3. You cannot use two or more FBs. <Consumed memory capacity (for Expert)> Memory type Program area Data memory User FB instance memory System FB instance memory Consumed memory capacity 814 steps 158 words 70 words <Consumed memory capacity (for Standard)> Memory type Program area Data memory User FB instance memory System FB instance memory Consumed memory capacity 2710 steps 170 words 70 words * The consumed memory capacity includes the capacity of a user FB for HLC and sub FBs called from it. 3-2

15 Section 3 Programming 3-3 Specifications of User FB for HLC FB format <For Expert (D300win)> Input terminal Output terminal Open OPEN (BOOL) _CSPF_HLC (BOOL) OK Communication ready Zero-point reset request ZERO_RESET (BOOL) (BOOL) BUSY Busy flag Tare weight setting request SET_DEDUCT (BOOL) (BOOL) OVERLOAD_FLAG Overload flag Tare weight clear request CLR_DEDUCT (BOOL) (BOOL) GROSS_FLAG Gross flag Zero-point calibration request ZERO_CALIB (BOOL) (BOOL) NET_FLAG Net flag Span calibration request SPAN_CALIB (BOOL) (BOOL) ZERO_FLAG Zero-point flag EEPROM save request SAVE_EEP (BOOL) (BOOL) UNSTABLE_FLAG Unstable flag A/D sampling rate AD_SAMPLE_RATE (WORD) O_AD_SAMPLE_RATE (WORD) A/D sampling rate Minimum scale MIN_SCALE (WORD) O_MIN_SCALE (WORD) Minimum scale Zero tracking time ZERO_TRACK_TIME (WORD) O_ZERO_TRACK_TIME (WORD) Zero tracking time Zero tracking range ZERO_TRACK_RANGE (WORD) O_ZERO_TRACK_RANGE (WORD) Zero tracking range Unstable tracking time UNSTABLE_TRACK_TIME (WORD) O_UNSTABLE_TRACK_TIME (WORD) Unstable tracking time Unstable tracking range UNSTABLE_TRACK_RANGE (WORD) O_UNSTABLE_TRACK_RANGE (WORD) Unstable tracking range Span calibration weight SPAN_WEIGHT (DINT) O_SPAN_WEIGHT (DINT) Span calibration weight Maximum weight MAX_WEIGHT (DINT) O_MAX_WEIGHT (DINT) Maximum weight A/D sampling rate LD_AD_SAMPLE_RATE (BOOL) (DWORD) AD_VALUE AD conversion value Minimum scale LD_MIN_SCALE (BOOL) (DINT) DISP_VALUE Display value Zero tracking time LD_ZERO_TRACK_TIME (BOOL) (WORD) CALIB_ERR Calibration error status Zero tracking range LD_ZERO_TRACK_RANGE (BOOL) Unstable tracking time LD_UNSTABLE_TRACK_TIME (BOOL) Unstable tracking range Span calibration weight Maximum weight LD_UNSTABLE_TRACK_RANGE (BOOL) LD_SPAN_WEIGHT (BOOL) LD_MAX_WEIGHT (BOOL) 3-3 * Words in parentheses ( ) show the Data type.

16 Section 3 Programming <For Standard> Input terminal Output terminal Open V1 OPEN _CSPF_HLC V24 OK Communication ready Zero-point reset request V2 ZERO_RESET V25 BUSY Busy flag Tare weight setting request V3 SET_DEDUCT V26 OVERLOAD_FLAG Overload flag Tare weight clear request V4 CLR_DEDUCT V27 GROSS_FLAG Gross flag Zero-point calibration request V5 ZERO_CALIB V28 NET_FLAG Net flag Span calibration request V6 SPAN_CALIB V29 ZERO_FLAG Zero-point flag EEPROM save request V7 SAVE_EEP V30 UNSTABLE_FLAG Unstable flag A/D sampling rate WV8 AD_SAMPLE_RATE WV31 O_AD_SAMPLE_RATE A/D sampling rate Minimum scale WV9 MIN_SCALE WV32 O_MIN_SCALE Minimum scale Zero tracking time WV10 ZERO_TRACK_TIME WV33 O_ZERO_TRACK_TIME Zero tracking time Zero tracking range WV11 ZERO_TRACK_RANGE WV34 O_ZERO_TRACK_RANGE Zero tracking range Unstable tracking time WV12 UNSTABLE_TRACK_TIME WV35 O_UNSTABLE_TRACK_TIME Unstable tracking time Unstable tracking range WV13 UNSTABLE_TRACK_RANGE WV36 O_UNSTABLE_TRACK_RANGE Unstable tracking range Span calibration weight DV14 SPAN_WEIGHT DV37 O_SPAN_WEIGHT Span calibration weight Maximum weight DV15 MAX_WEIGHT DV38 O_MAX_WEIGHT Maximum weight A/D sampling rate V16 LD_AD_SAMPLE_RATE DV39 AD_VALUE AD conversion value Minimum scale V17 LD_MIN_SCALE DV40 DISP_VALUE Display value Zero tracking time V18 LD_ZERO_TRACK_TIME WV41 CALIB_ERR Calibration error status Zero tracking range V19 LD_ZERO_TRACK_RANGE Unstable tracking time V20 LD_UNSTABLE_TRACK_TIME Unstable tracking range Span calibration weight Maximum weight V21 LD_UNSTABLE_TRACK_RANGE V22 LD_SPAN_WEIGHT V23 LD_MAX_WEIGHT 3-4

17 Section 3 Programming Description of FB terminals Terminal name FB terminal name Data type I/O Description Open OPEN BOOL IN ON: Communication is initialized. When communication becomes possible, Communication ready is set on. OFF: Processing for ending communication is performed. Communication ready is set off. Zero-point reset request ZERO_RESET BOOL IN Tare weight setting request Set on this terminal to set the digital value for the current A/D conversion value to 0. SET_DEDUCT BOOL IN Set on this terminal to set the tare weight Tare weight clear request CLR_DEDUCT BOOL IN Set on this terminal to clear the tare weight setting. Zero-point calibration request ZERO_CALIB BOOL IN Set on this terminal to perform zero-point calibration. Span calibration request SPAN_CALIB BOOL IN Set on this terminal to perform span calibration. EEPROM save request SAVE_EEP BOOL IN A/D sampling rate Minimum scale specified value Zero tracking time Zero tracking range Unstable tracking time AD_SAMPLE_ RATE WORD IN MIN_SCALE WORD IN ZERO_TRACK_ TIME ZERO_TRACK_ RANGE UNSTABLE_ TRACK_TIME WORD WORD WORD IN IN IN Set on this terminal to save the set parameters in the EEPROM. The saved parameters are applied at the next power-on. Specify the A/D conversion cycle in the range of 0 to 4. 0: 100Hz, 1: 50Hz, 2: 25Hz, 3: 12.5Hz, 4: 6.25Hz (Default: 4 [6.25Hz]) If a value greater than or equal to 5 is specified, the default value 4 is set and the sampling rate becomes 6.25Hz. The is not reflected in the setting value in the HLC while A/D sampling rate is off. Specify the minimum scale of change in Display value in the range of 0 to 5. 0: 1, 1: 2, 2: 5, 3: 10, 4: 20, 5: 50 (Default: 0 [1]) If a value greater than or equal to 6 is specified, the default value 0 is set and the minimum scale becomes 1. The is not reflected in the setting value in the HLC while Minimum scale is off. Specify the automatic tracking time for zero-point drift in the range of 0 to 100, in 0.1 second steps. (Default: 10 [1.0 second]) If a value greater than or equal to 101 is specified, the default value 10 is set and the zero tracking time becomes 1.0 second. The is not reflected in the setting value in the HLC while Zero tracking time is off. Specify the automatic tracking range for zero-point drift in the range of 0 to 100. The unit is 0.1 scale of Display value. (Default: 10 [1.0 scale]) If a value greater than or equal to 101 is specified, the default value 10 is set and the zero tracking range becomes 1.0 scale. The is not reflected in the setting value in the HLC while Zero tracking range is off. Specify the unstable tracking time in the range of 0 to 100, in 0.1 second steps. (Default: 10 [1.0 second]) If a value greater than or equal to 101 is specified, the default value 10 is set and the unstable tracking time becomes 1.0 second. The is not reflected in the setting value in the HLC while Unstable tracking time is off. 3-5

18 Section 3 Programming Terminal name Unstable tracking range Span calibration weight Maximum weight A/D sampling rate update request Minimum scale update request Zero tracking time update request Zero tracking range Unstable tracking time Unstable tracking range Span calibration weight Maximum weight update request FB terminal name Data type UNSTABLE_ TRACK_RANGE WORD I/O IN SPAN_WEIGHT DINT IN MAX_WEIGHT DINT IN LD_AD_ SAMPLE_RATE BOOL IN LD_MIN_SCALE BOOL IN LD_ZERO_ TRACK_TIME LD_ZERO_ TRACK_RANGE LD_UNSTABLE_ TRACK_TIME LD_ UNSTABLE_ TRACK_RANGE LD_SPAN_ WEIGHT LD_MAX_ WEIGHT BOOL BOOL BOOL BOOL BOOL BOOL IN IN IN IN IN IN Description Specify the unstable tracking range in the range of 0 to 100, The unit is 0.1 scale of Display value. (Default: 10 [1.0 scale]) If a value greater than or equal to 101 is specified, the default value 10 is set and the unstable tracking range becomes 1.0 scale. The is not reflected in the setting value in the HLC while Unstable tracking range is off. Specify the Display value of the standard weight that is used for span calibration. The is not reflected in the setting value in the HLC while Span calibration weight is off. Specify the Display value of the maximum weight. The is not reflected in the setting value in the HLC while Maximum weight is off. Set on this terminal to reflect A/D sampling rate specified value in the setting value in the HLC. If you change A/D sampling rate when the terminal is turned from off to on or while it is on, the A/D sampling rate is updated. Set on this terminal to reflect Minimum scale specified value in the setting value in the HLC. If you change Minimum scale when the terminal is turned from off to on or while it is on, the minimum scale is updated. Set on this terminal to reflect Zero tracking time specified value in the setting value in the HLC. If you change Zero tracking time when the terminal is turned from off to on or while it is on, the setting value is updated. Set on this terminal to reflect Zero tracking range specified value in the setting value in the HLC. If you change Zero tracking range when the terminal is turned from off to on or while it is on, the setting value is updated. Set on this terminal to reflect Unstable tracking time in the setting value in the HLC. If you change Unstable tracking time when the terminal is turned from off to on or while it is on, the setting value is updated. Set on this terminal to reflect Unstable tracking range in the setting value in the HLC. If you change Unstable tracking range when the terminal is turned from off to on or while it is on, the setting value is updated. Set on this terminal to reflect Span calibration weight in the setting value in the HLC. If you change Span calibration weight when the terminal is turned off to on or while it is on, the setting value is updated. Set on this terminal to reflect Maximum weight specified value in the setting value in the HLC. If you change Maximum weight when the terminal is turned from off to on or while it is on, the setting value is updated. 3-6

19 Section 3 Programming Terminal name FB terminal name Data type Communication ready OK BOOL OUT Busy flag BUSY BOOL OUT Overload flag OVERLOAD_ FLAG BOOL I/O OUT Description This terminal is set on when initialization is completed normally, indicating that communication becomes possible. This terminal is set on while performing processing such as initialization after start-up or change of the setting value. This terminal is set on when Display value (DISP_VALUE) exceeds Maximum weight (O_MAX_ WEIGHT). Gross flag GROSS_FLAG BOOL OUT This terminal is set on when no tare weight is specified. Net flag NET_FLAG BOOL OUT This terminal is set to on when a value other than 0 is specified for the tare weight. Zero-point flag ZERO_FLAG BOOL OUT This terminal is set on when the gross value is 0. Unstable flag UNSTABLE_FLAG BOOL OUT A/D sampling rate current value Minimum scale current value Zero tracking time current value Zero tracking range Unstable tracking time Unstable tracking range Span calibration weight Maximum weight current value O_AD_SAMPLE_ RATE WORD OUT O_MIN_SCALE WORD OUT O_ZERO_ TRACK_TIME O_ZERO_ TRACK_RANGE O_UNSTABLE_ TRACK_TIME O_UNSTABLE_ TRACK_RANGE WORD WORD WORD WORD O_SPAN_WEIGHT DINT OUT OUT OUT OUT OUT O_MAX_WEIGHT DINT OUT This terminal is set on when Display value exceeds the unstable tracking range during the unstable tracking time. The of the A/D sampling rate set in the HLC is output. The of the minimum scale set in the HLC is output. The of the zero tracking time set in the HLC is output. The of the zero tracking range set in the HLC is output. The of the unstable tracking time set in the HLC is output. The of the unstable tracking range set in the HLC is output. The of the span calibration weight set in the HLC is output. The of the maximum weight set in the HLC is output. A/D conversion value AD_VALUE DWORD OUT The A/D conversion value of input voltage is output. Display value DISP_VALUE DINT OUT Calibration error status CALIB_ERR WORD OUT The display value after span and weight calibration is output. In general, this value is used as a weight value measured by the load cell. A minus value is represented by two s complement. A code indicating the calibration error status is output. 0: Normal 1: A/D abnormal 2: Weight calibration earlier than prerequisite calibration (e.g., SPAN1<ZERO) 3: Weight calibration precision higher than 0.1uV/D 3-7

20 Section 3 Programming 3-4 How to Use the FB Initialization (1) Initialization procedure When the Open (OPEN) terminal of the FB is set on, communication with the HLC unit starts. If communication does not start due to a hardware error, the Communication ready (OK) terminal remains off. When communication starts successfully, the Communication ready (OK) terminal is set ON and the setting values held in the HLC unit are read and output to the output terminals of the FB. While the setting values are read, the Busy flag (BUSY) is set ON. <When initialization is performed normally> Set on by the application program. Set off by the application program. The Open signal must be on during the data communication. Open (OPEN) Communication starts. Port closing operation Communication ready (OK) The current setting values are read. Busy flag (BUSY) <When initialization is not performed normally> Set on by the application program. Set off by the application program. Open (OPEN) Communication ready (OK) Busy flag (BUSY) (2) Setting values read after initialization HLC register name Data type FB output terminal name A/D sampling rate WORD O_AD_SAMPLE_RATE Minimum scale WORD O_MIN_SCALE Zero tracking time WORD O_ZERO_TRACK_TIME Zero tracking range WORD O_ZERO_TRACK_RANGE Unstable tracking time WORD O_UNSTABLE_TRACK_TIME Unstable tracking range WORD O_UNSTABLE_TRACK_RANGE Span calibration weight DINT O_SPAN_WEIGHT Maximum weight DINT O_MAX_WEIGHT 3-8

21 Section 3 Programming Normal operation (1) Registers/flags automatically updated during FB normal operation After initialization, the FB starts normal operation. The following HLC registers/flags are repeatedly read and output to the output terminals of the FB. HLC register name Data type FB output terminal name A/D conversion value DWORD AD_VALUE Display value DINT DISP_VALUE Calibration error status WORD CALIB_ERR HLC flag name Data type FB output terminal name Overload flag BOOL OVERLOAD_FLAG Gross flag BOOL GROSS_FLAG Net flag BOOL NET_FLAG Zero-point flag BOOL ZERO_FLAG Unstable flag BOOL UNSTABLE_FLAG Setting change (1) Changing the setting value registers in HLC The setting value registers in the HLC unit are updated and replaced with the values of the register terminals at the following timings. 1) When a register terminal of the FB is turned from off to on 2) When the value of a register terminal is changed while the register terminal is on When a setting value register is updated, Busy flag (BUSY) is set on. Register Register 1) Rising edge of 2) Specified value is changed while is on. Busy flag (BUSY) Register HLC register name Specified value input terminal name Update request input terminal name Current value output terminal name A/D sampling rate AD_SAMPLE_RATE LD_AD_SAMPLE_RATE O_AD_SAMPLE_RATE Minimum scale MIN_SCALE LD_MIN_SCALE O_MIN_SCALE Zero tracking time ZERO_TRACK_TIME LD_ZERO_TRACK_TIME O_ZERO_TRACK_TIME Zero tracking range Unstable tracking time Unstable tracking range Span calibration weight ZERO_TRACK_RANGE LD_ZERO_TRACK_RANGE O_ZERO_TRACK_RANGE UNSTABLE_TRACK_TIME LD_UNSTABLE_TRACK_TIME O_UNSTABLE_TRACK_TIME UNSTABLE_TRACK_RANGE LD_UNSTABLE_TRACK_RANGE O_UNSTABLE_TRACK_RANGE SPAN_WEIGHT LD_SPAN_WEIGHT O_SPAN_WEIGHT Maximum weight MAX_WEIGHT LD_MAX_WEIGHT O_MAX_WEIGHT 3-9

22 Section 3 Programming (2) Behavior for an out-of-range register The table below shows the behavior when the setting of a register is out of the range. HLC register name Setting range Behavior for out-of-range value A/D sampling rate Minimum scale Zero tracking time Zero tracking range Unstable tracking time Unstable tracking range Span calibration weight 0: 100Hz, 1: 50Hz, 2: 25Hz, 3: 12.5Hz, 4: 6.25Hz 0: 1, 1: 2, 2: 5, 3: 10, 4: 20, 5: 50 0 to 100 (0.0 to 10.0 seconds) 0 to 100 (0.0 to 10.0 d) 0 to 100 (0.0 to 10.0 seconds) 0 to 100 (0.0 to 10.0 d) Depends on A/D conversion value from the zero point during the span calibration Maximum weight All values are accepted. If a value greater than or equal to 5 is specified, the default value 4 is set and the sampling rate becomes 6.25Hz. If a value greater than or equal to 6 is specified, the output value is updated as it is, however, the default value 0 is set and the minimum scale becomes 1. If a value greater than or equal to 101 is specified, the output value is updated as it is, however, the default value 10 is set and the zero tracking time becomes 1.0 second. If a value greater than or equal to 101 is specified, the output value is updated as it is, however, the default value 10 is set and the zero tracking range becomes 1.0 scale. If a value greater than or equal to 101 is specified, the output value is updated as it is, however, the default value 10 is set and the unstable tracking time becomes 1.0 second. If a value greater than or equal to 101 is specified, the output value is updated as it is, however, the default value 10 is set and the unstable tracking range becomes 1.0 scale. The output value is updated as it is when the is set on. However, if it is judged as an abnormal value, the is not applied and the output value is reset to the value before the calibration is performed. (3) Control request operation A control request to the HLC unit is promptly executed when the turning on of the corresponding input terminal is detected. HLC flag name Data type FB output terminal name Zero-point reset request BOOL ZERO_RESET Tare weight setting request BOOL SET_DEDUCT Tare weight clear request BOOL CLR_DEDUCT Zero-point calibration request BOOL ZERO_CALIB Span calibration request BOOL SPAN_CALIB EEPROM save request BOOL SAVE_EEP (4) Transition from setting change to normal operation Busy flag (BUSY) is set on when a setting value register is changed, and then off after the FB transits to normal operation. While Busy flag is on, other setting changes are not performed and the measurement results such as Display value and A/D conversion value are not available. (The values are not updated.) Usually Busy flag is set off immediately after the setting change is completed. Only when A/D sampling rate is changed, the on state remains for approximately 3 seconds. After Busy flag is set off, the FB transits to normal operation. The measurement results such as Display value and A/D conversion value continue to be updated. 3-10

23 Section 3 Programming Calibration When you use an HLC unit for the first time, perform zero-point calibration and span calibration. (1) Zero-point calibration procedure 1) Make sure that nothing is on the load cell, and then turn the Zero-point calibration request terminal (ZERO_CALIB) from off to on. The calibration is performed at the rising edge. When completed successfully, the output value of the Display value terminal (DISP_VALUE) becomes 0. If not, confirm whether the zero-point calibration operation is correct. 2) After the calibration, set off the Zero-point calibration request terminal (ZERO_CALIB). Otherwise, the output value of the Display value terminal (DISP_VALUE) remains 0. (2) Span calibration procedure 1) Perform zero-point calibration in advance. 2) Set the display value for the weight for calibration (standard weight) in the Span calibration weight terminal (SPAN_WEIGHT). 3) Set on the Span calibration weight terminal (LD_SPAN_WEIGHT). 4) Confirm that the Span calibration weight terminal (O_SPAN_WEIGHT) is changed to the same value as the, and then set off the Span calibration weight terminal (LD_SPAN_WEIGHT). 5) Place the weight for calibration (standard weight) on the load cell. 6) Turn the Span calibration request terminal (SPAN_CALIB) from off to on. The calibration is performed at the rising edge. 7) Confirm that the Display value terminal (DISP_VALUE) is the same value as the Span calibration weight and, the output value of the Calibration error status terminal (CALIB_ERR) is 0. 8) Set off the Span calibration request terminal (SPAN_CALIB) and remove the weight for calibration (standard weight) Setting the tare weight (1) Setting the tare weight After the calibration (described in 3-4-4) is completed, place the tare on the load cell, and then set on the Tare weight setting request terminal (SET_DEDUCT). The tare weight is set at the rising edge and the output value of the Display value terminal (DISP_VALUE) becomes 0. After the tare weight is set, set off the Tare weight setting request terminal (SET_DEDUCT). When the tare weight is set, the Net flag terminal (NET_FLAG) is set on. (2) Clearing the tare weight To clear the tare weight after it is set, remove the tare from the load cell and set on the Tare weight clear request terminal (CLR_ DEDUCT). The tare weight is cleared at the rising edge. After the tare weight is cleared, set off the Tare weight clear request terminal (CLR_DEDUCT). When the tare weight is cleared, the Gross flag terminal (GROSS_FLAG) is set on. 3-11

24 Section 3 Programming Saving the setting values The values set by the setting change in the HLC unit or by calibration are saved in the EEPROM in the HLC unit by the following operations. They are automatically applied at the next power-on. (1) Setting values saved by EEPROM save request The register values other than Span calibration weight are saved by turning the EEPROM save request terminal (SAVE_EEP) from off to on. HLC register name Specified value input terminal name of FB Current value output terminal name of FB A/D sampling rate AD_SAMPLE_RATE O_AD_SAMPLE_RATE Minimum scale MIN_SCALE O_MIN_SCALE Zero tracking time ZERO_TRACK_TIME O_ZERO_TRACK_TIME Zero tracking range ZERO_TRACK_RANGE O_ZERO_TRACK_RANGE Unstable tracking time UNSTABLE_TRACK_TIME O_UNSTABLE_TRACK_TIME Unstable tracking range UNSTABLE_TRACK_RANGE O_UNSTABLE_TRACK_RANGE Maximum weight MAX_WEIGHT O_MAX_WEIGHT (2) Setting values saved by span calibration The value of Span calibration weight is not saved by the EEPROM save request terminal (SAVE_EEP). When the span calibration is normally completed, the value of Span calibration weight is saved in the EEPROM. HLC register name Specified value input terminal name of FB Current value output terminal name of FB Span calibration weight SPAN_WEIGHT O_SPAN_WEIGHT (3) Setting values saved by setting/clearing the tare weight The status of gross/net weight, and the tare weight are saved in the EEPROM when the Tare weight setting request terminal (SET_DEDUCT) is set on and cleared when the Tare weight clear request terminal (CLR_DEDUCT) is set on. 3-12

25 Fuji Electric Co., Ltd. Gate City Ohsaki, East Tower, 11-2, Osaki 1-chome, Shinagawa-ku, Tokyo , Japan URL: Materials covered in this document are subject to revision due to the modification of the product.