SBPC-21-PB FifeNet to Profibus Gateway

Transcription

1 Fife Corporation PO Box 26508, Oklahoma City, OK 73126, U.S.A. Phone: / Fax: / fife@fife.com SBPC-21-PB FifeNet to Profibus Gateway Profibus Operation Manual PROFIBUS DP 2004 Fife Corporation. All rights reserved.

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3 SBPC-21-PB PROFIBUS OPERATION MANUAL COPYRIGHT All rights reserved. Any reproduction of this Instruction Manual, in any form, in whole or in part, requires the prior written consent of Fife Corporation. The information given in this Instruction Manual is subject to change without notice. We have compiled this Instruction Manual with the greatest possible care and attention. However, the possibility of error cannot be completely excluded. Fife Corporation accepts no legal liability for incorrect information given and the consequences arising therefrom. AnyBus is a registered trademark of HMS Industrial Networks AB. All other trademarks are the property of their respective holders.

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5 SBPC-21-PB PROFIBUS OPERATION MANUAL TABLE OF CONTENTS GENERAL INFORMATION...1 Introduction...1 Profibus DP Overview...1 FifeNet...2 SBPC-21-PB Data Flow...3 SBPC-21-PB Switch/Jumper Configuration...4 SBPC-21-PB External Connections/Switches/Indicators...5 Profibus DP Baud Rate...5 SBPC-21-PB Network Status...6 SBPC-21-PB Error Codes...7 SBPC-21-PB Network Traffic...8

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7 SBPC-21-PB PROFIBUS OPERATION MANUAL 1 GENERAL INFORMATION Introduction The Fife SBPC-21-PB (Serial Bus Protocol Converter) provides a gateway between Fife s proprietary FifeNet network and Profibus. Using the SBPC-21-PB, data originating from FifeNet can be sent on Profibus and data from Profibus can be sent to FifeNet. Profibus DP Overview The supported media for the SBPC-21-PB Profibus is a shielded copper cable consisting of a twisted pair. The baud rate for the bus is between 9.6K baud to a maximum 12M baud. The Profibus DP network is able to carry 126 nodes and the total amount of data for Profibus DP is 244 bytes out per module and 244 bytes in per module. Node 126 is only used for commissioning purposes and should not be used to exchange user data. An example of a Profibus network with an SBPC-21-PB is shown in the diagram below. Figure 1-1: Example of an SBPC-21-PB Network Connection RS-232 Profibus DP Master Profibus Profibus DP Slave #1 Profibus DP Slave #2 Profibus DP Slave #3 The SBPC-21-PB connects to both FifeNet and Profibus providing translation between two networks. FifeNet CDP-01 DAC-004 SE Figure Sheet Page 1

8 SBPC-21-PB PROFIBUS OPERATION Table 1-1: Technical Features for Profibus DP SUMMARY OF PROFIBUS DP TECHNICAL FEATURES Transmission Technique: Profibus DIN 19245, Part 1 Medium Access: Hybrid medium access protocol according to DIN 19245, Part 1 Communications: Peer-to-Peer (User Data Transfer) or Multicast (Synchronization) EIA RS 485 twisted pair cable or fiber optic. 9.6 kbit/s up to 12 Mbit/s, maximum distance 200m at 1.5 Mbit/s extendible with repeaters. Monomaster or multimaster systems supported. Master and slave devices, maximum 126 stations possible. Cyclic master slave transfer and acyclic master-master data transfer. Operation Modes Synchronization: Enables synchronization of the inputs and/or outputs of all DP slaves. Functionality Security and Protection Mechanisms Cabling and Installation Operate: cyclic transfer of input and output data. Clear: inputs are read and outputs are cleared. Stop: only master-master functions are possible. Sync-Mode: Outputs are synchronized. Freeze-Mode: Inputs are synchronized. Cyclic user data transfer between DP-Master(s) and DP Slave(s). Activation or deactivation of individual DP Slaves. Checking of the configuration of the DP Slaves. Powerful diagnosis mechanisms, 3 hierarchical levels of the diagnosis messages. Synchronization of inputs and/or outputs. Address assignments for the DP-Slaves over the bus with Master Class 2. Configuration of the DP-Master (DPM1) over the bus. Maximum 244 bytes input and output data per DP Slave, typical 32 bytes. All messages are transmitted with Hamming Distance HD=4 Watchdog timer at the DP slaves. Access protection for the inputs/outputs at the DP slaves. Data transfer monitoring with configurable timer DP Master (DPM1). Connecting or disconnecting of stations without affecting of other stations. PROTOCOL AND SUPPORTED FEATURES Fieldbus Type PROFIBUS-DP EN (DIN 19245) Protocol Version Version 1.10 Protocol Stack Supplier Auto Baud Rate Detection Supported Siemens Baud Rate Range: 9.6 kbit to 12Mbit PHYSICAL INTERFACE Transmission Media Profibus Bus Line, Type A or B Specified in EN Topology Fieldbus Connector Cable Isolation Profibus DP Ccommunication IC Master-Slave Communication 9-Pin Female DSUB Shielded Copper Cable, Twisted Pair The bus is galvanically separated from the other electronics with an on-board DC/DC converter. Bus signals (A-line and B-line) are isolated via optocouplers. SPC3 Chip from Siemens FifeNet FifeNet uses the Produce/Consumer Model. FifeNet s deployment of the Producer/Consumer Model allows data sent by a single device to be received simultaneously by multiple devices on the same network. Each receiving device can choose to use ( consume ) the information or ignore it as its needs dictate Figure Sheet Page 2

9 SBPC-21-PB PROFIBUS OPERATION MANUAL FifeNet is based on a fixed time slicing architecture where transmitting devices send data in fixed, predetermined time intervals. Data on FifeNet is divided into intervals called time slices. Each time slice can transmit a single 16-bit value. All time slice values are updated every cycle. Because the FifeNet protocol uses the time slice architecture, a FifeNet master is required to provide synchronization between FifeNet devices. The synchronization allows many devices to send and receive data. In many cases the SBPC-21 functions as the FifeNet master to control this data flow. SBPC-21-PB Data Flow In order to effectively connect two dissimilar networks, some means must be provided to collect the data from each network and exchange it in a controlled manner so that no partial or incomplete data is sent on either network. This is accomplished by using a block of memory in the SBPC-21-PB to reassemble FifeNet time slice data and then, when it is complete, transfer it to the Profibus buffers for transmission on Profibus. Keep in mind that the gateway has to be bidirectional so this process works the same way for data traveling from Profibus to FifeNet. The diagram below shows the process: Figure 1-2: SBPC-21-PB Data Flow Block Diagram FifeNet D1 M M Profibus Data D2 D3 A A T R I T R I X X The time slice buffers hold the raw time slice data. This matrix is used to connect any time slice to any memory buffer location. The memory array is used to assemble and hold data passing through the gateway. This matrix is used to connect Profibus data to any memory buffer location. Profibus data is placed here for transmission. FifeNet transmit data is read from here and sent to FifeNet Figure Sheet Page 3

10 SBPC-21-PB PROFIBUS OPERATION SBPC-21-PB Switch/Jumper Configuration Since the SBPC-21-PB participates in two networks at the same time, it must have two network addresses (a FifeNet address and a Profibus node address). The FifeNet address is set via the FifeNet serial port, which is common with many FifeNet peripherals. The Profibus master sets the baud rate for the Profibus network. If the SBPC-21-PB is installed as the end point in a FifeNet network, the jumpers shown below should be installed to provide network termination. Figure 1-3: SBPC-21-PB Top View These jumpers should be installed if the SBPC-21-PB is at the end of a FifeNet network. They provide network termination. The other two jumpers should always be installed as they select half-duplex FifeNet communication. Terminated Not Terminated The 7-segment LED is used to display errors or exceptions. During normal operation, the display will continuously cycle the outer segments. Profibus Termination The end nodes in a Profibus DP network must be terminated to avoid reflections on the bus line. To accomplish this, the Profibus DP module is equipped with a termination switch. If the module is used as the first or last module in a network, the termination switch must be in the ON position. Otherwise, the switch must be in the OFF position. If an external termination connector is used, the switch must be in the OFF position. Profibus node address switches. See the following page for description of these switches. The termination dip switch can only be accessed with the SBPC-21-PB top cover removed. To enable termination, the switch must be in the OFF position. Termination OFF ON Switch Position Up toward top cover. Down toward circuit board Figure Sheet Page 4

11 SBPC-21-PB PROFIBUS OPERATION MANUAL SBPC-21-PB External Connections/Switches/Indicators SBPC-21-PB mounting considerations are simplified as all connections to the SBPC-21-PB are on the same side of the box. The node address and rotary switches are accessible after removal of the plastic hole plugs which should be reinstalled after configuration is completed. Figure 1-4: SBPC-21-PB Side View Connection to FifeNet is accomplished using the standard FifeNet connector. Configuration is also downloaded using this connection. LED indicators provide feedback for network troubleshooting. D-SUB Connector Pin Name Signal Housing Shield Connected to PE. 1 Not connected 2 Not connected 3 B-Line Positive RXD/TXD 4 RTS Request to Send 1 5 GND BUS Isolated GND from RS-485 side V BUS Isolated +5VDC from RS-485 side Not connected 8 A-Line Positive RXD/TXD 9 Not connected 1 +5V Bus and GND Bus are used for bus termination. Some devices, like optical transceivers (RS485 to fiber optics), might require external power from these pins. RTS is used in some equipment to determine the direction of transmission. In normal applications only A-Line, B-Line, and Shield are used. The Profibus Node address is set using these rotary switches. This enables address settings from 1-99 in decimal format. The left switch sets the most significant digit and the right switch sets the least significant digit. The node address cannot be changed during operation. Profibus DP Baud Rate The baud rate on a Profibus DP network is set during configuration of the master. Only one baud rate is possible in a Profibus DP installation. The SBPC-21-PB uses auto baud rate detection so the user does not have to configure the baud rate. Baud rates supported are: 9.6 kbit/s kbit/s 3 Mbit/s 19.2 kbit/s 500 kbit/s 6 Mbit/s kbit/s 1.5 Mbit/s 12 Mbit/s Figure Sheet Page 5

12 SBPC-21-PB PROFIBUS OPERATION SBPC-21-PB Network Status The SBPC-21-PB network status is determined by interpretation of the external LED status indicators as described below. Figure 1-5: SBPC-21-PB LED Indicators Table 1-2 Green Off LED State ONLINE Meaning Indicates that the module is ONLINE and data exchange is possible. Module is not ONLINE Red Off LED State OFFLINE Meaning Indicates that the module is OFFLINE and no data exchange is possible. Module is ONLINE. LED State Off Flashing Red (1 Hz) Flashing Red (2 Hz) Flashing Red (4 Hz) FAULTS No faults present. Meaning Error in configuration: IN and/or OUT length set during initialization of the module is not equal to the length set during configuration of the network. Error in user parameter data: The length/contents of the user parameter data set during initialization of the module is not equal to the length/contents set during configuration of the network. Error in initialization of the Profibus communication ASIC Figure Sheet Page 6

13 SBPC-21-PB PROFIBUS OPERATION MANUAL SBPC-21-PB Error Codes The 7-segment LED digit on the SBPC-21-PB main board is used to indicate errors or other potential problems. See page 2 of this manual for the location of this LED. The error codes are divided into the categories listed below. Since there is only a single-digit display and the error codes are 3 digits in length, the error codes are displayed in three parts. The most significant digit will appear first followed by the second and third digits. The display will go blank for a moment and the cycle repeats unless the SBPC-21-PB has been configured to attempt to restart after an error. If this is the case, the error will only cycle once. All state machine errors 5XX are considered nonfatal and only cycle once. Below are the error codes and their meanings: F01 F02 F03 F04 F05 F06 F07 F08 F09 F0A F0B F0C F0D F0E F0F E01 E02 E03 E04 E05 E06 E07 E08 E09 E0A E0B Table 1-3 SBPC PROCESSOR ERRORS Processor attempted to execute and undefined instruction. Software interrupt vector occurred. Attempt to fetch instruction from invalid memory. Attempt to read data from invalid memory. Reserved exception vector. FLASH memory checksum fault. Pool memory allocation error. Byte memory allocation error. Unable to create thread. Unable to create event. Unable to create semaphore. Unable to create mutex. Unable to create queue. Unable to write to queue. Console I/O error. COMMUNICATION MODULE ERRORS The configuration matrix is corrupted. No HMS Anybus module detected. Anybus module failed to initialize (no interrupt received). Anybus module failed to initialize (interrupt stuck). Anybus module failed to initialize (mailbox not ready). Anybus mailbox timeout. Anybus mailbox response indicated error. Anybus mailbox response timeout. Anybus dual-port RAM fault. Anybus output area release timeout. Anybus initialization timeout. 501 State machine file is corrupted. 502 State machine is disabled. STATE MACHINE ERRORS 503 State machine started in shutdown mode. 504 Bad state machine instruction encountered. 505 State machine instruction fetch from address is out of range. 506 State machine stack error (too many nested calls). 507 State machine stack error (too many returns). 508 State machine attempted divide by zero. 509 State machine tried to access more than four timers. 50A State machine variable address is out of range. Errors that begin with F are unrecoverable faults. The SBPC cannot participate in FifeNet or Profibus operations. In the default configuration the SBPC will attempt to restart. Errors that begin with E are associated with the Profibus interface. In the default configuration, the SBPC will attempt to restart. With the exception of error E01, FifeNet is functional; however, the default configuration will attempt to restart which will interrupt FifeNet. Errors that begin with 5 are related to the state machine capability of the SBPC. These errors are cycled only once and do not cause the SBPC to restart Figure Sheet Page 7

14 SBPC-21-PB PROFIBUS OPERATION SBPC-21-PB Network Traffic See the documentation provided with your order for specific data provided on the profibus network Figure Sheet Page 8