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GFK-2992B
September 2016
Serial Communication Module EP-5261
© 2016 General Electric Company.
Indicates a trademark of General Electric Company and/or its subsidiaries. All other trademarks are the property of their respective owners.
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Serial Communication Module EP-5261
Function Block FB_RSTI_EP_5261
Handling Function Block FB_MBM_RTU_Master
Serial Communication Module EP-5261
The RSTi-EP Serial Communication (EP-5261) module provides extended
communication options. For example, devices (such as barcode scanners or
printers) can be integrated consistently in RSTi-EP systems using an RS-232,
RS-485, or RS-422 interface. The EP-5261 module presents a solution for
connecting the control cabinet to the field.
The data transfer rate can be parameterised between 300 and 11,5200 bps.
The process data length can be parameterised to be 8 or 16 byte. A
terminating resistor can be parameterised for the RS-485 and RS-422
interface respectively.
The communication status is indicated by two LEDs on the respective plug.
The module electronics supply the connected data terminal device with
power from the input current path (I
supply voltage outputs are protected against over-current.
The module features a type plate, which includes identification information,
the key technical specifications, and a block diagram. Additionally, a QR code
allows for direct online access to the associated documentation. The
software for reading the QR code must support inverted QR codes.
Markers are available as accessories for labelling the equipment. Each I/O
module can be labelled to ensure clear identification when replacing
individual modules or electronic units.
The RSTi-EP station is usually installed on a horizontally positioned DIN-rail.
Installation on vertically positioned DIN rails is also possible.
Modules should to be allowed to de-energize for a minimum 10 seconds after
power down, prior to starting any maintenance activity.
Refer to the RSTi-EP Slice I/O User Manual (GFK-2958) for additional
information.
For power-feed (a software utility available on PME V9.00) requirements, refer
to the RSTi-EP Power Supply Reference Guide.
EP-5261 Module Features
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Spring style technology for ease of wiring
•
DIN-rail mounted
•
Double-click installation for positive indication of correct installation
•
Supports indirect firmware update through the network monitor
•
Supports replacement without shutting down the system
RSTI-EP Slice I/O
) either with 5 V dc or 24 V dc. Both
IN
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Table of Contents
Summary of Contents for GE EP-5261
- Page 1 For example, devices (such as barcode scanners or printers) can be integrated consistently in RSTi-EP systems using an RS-232, RS-485, or RS-422 interface. The EP-5261 module presents a solution for connecting the control cabinet to the field. The data transfer rate can be parameterised between 300 and 11,5200 bps.
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Page 2: Ordering Information
GFK-2992B Ordering Information Module Description EP-5261 RSTi-EP Slice I/O Serial Communication module Specifications Item EP-5261 Specification System Data Data Process, parameter, and diagnostic data depend on the network adapter used Interface RSTi-EP system bus System bus transfer rate 48 Mbps... - Page 3 Power consumption from output current path Current demand of the connected sensors Current demand of the connected actuators Must be included when calculating the power supply LEDs EP-5261 Status Green: Communication over the system bus Module Status Red: Collective error diagnostic...
- Page 4 RSTi-EP Slice I/O Serial Communication Module GFK-2992B Overview of Editable Parameters Description Options Default Operating mode Disabled (0) / RS232 (1) / RS485 (2) / RS422 (3) Disabled Data bits 7 Bit (0) / 8 Bit (1) 8 Bit 300 (0) / 600 (1) / 1200 (2) / 2400 (3) / 4800 (4) / 9600 (5) / 14400 (6) / Baud rate 9600 19200 (7) / 28800 (8) / 38400 (9) / 57600 (10) / 115200 (11)
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Page 5: Diagnostic Data
RSTi-EP Slice I/O Serial Communication Module GFK-2992B Diagnostic Data Name Bytes Description Default Module error Internal error External error Channel error Error indicator Error Reserved Reserved Parameter error Module Type 0x05 Module type Reserved Reserved Reserved Reserved Error byte 2 Reserved Reserved Error byte 3... -
Page 6: Data Transfer
RSTi-EP Slice I/O Serial Communication Module GFK-2992B Data Transfer The process data length can be parameterized to be 8 or 16 Bytes. Byte 0 is used for status and diagnosis, Byte 1 for the data segment length, and the remaining 6 or 14 Bytes are user data. Process input data: The data sent from the serial device are written into the receive memory of the module. - Page 7 RSTi-EP Slice I/O Serial Communication Module GFK-2992B Process Output Data Byte Format Name Description Remarks Bit 0: RXBUF FLUSH The receive memory can be scrubbed using this bit. IX0.0 RXBUF FLUSH STATRES = 1: A requirement with RXBUF FLUSH = 1 will be ignored. STATRES = 0: The receive memory will be scrubbed with RXBUF FLUSH = 1.
- Page 8 RSTi-EP Slice I/O Serial Communication Module GFK-2992B Enabling the Data Transfer There are ways to announce the communication module to the control. Using the test mode, you only copy the input data into the output data of the module so the received data will be sent again. Or, select one of the function blocks provided by your engineering tool.
- Page 9 RSTi-EP Slice I/O Serial Communication Module GFK-2992B The status and control word values during various states of communication are provided in the following table. Input Byte 0 (Status) of Module Input Output byte 0 (control) off the module Output Notes Action Byte 1 byte 1...
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Page 10: Field Wiring
RSTi-EP Slice I/O Serial Communication Module GFK-2992B Field Wiring The connection frame can take up to four connectors (shown in the following figure), and four wires can be connected to each connector. The Spring style technology allows either finely stranded or solid wire conductors with crimped wire- end ferrules or ultrasonically welded wires, each with a maximum cross-section of 1.5 mm²... -
Page 11: Installation In Hazardous Areas
Refer to the RSTi-EP Slice I/O User Manual (GFK-2958) for additional information. Technical assistance is available at http://support.ge-ip.com. Installation in Hazardous Areas EQUIPMENT LABELED WITH REFERENCE TO CLASS I, GROUPS A, B, C & D, DIV. 2 HAZARDOUS AREAS IS SUITABLE FOR USE IN ... -
Page 12: Connection Diagrams
RSTi-EP Slice I/O Serial Communication Module GFK-2992B Connection Diagrams EP-5261 Module Connections For public disclosure... -
Page 13: Connection Block Diagrams
RSTi-EP Slice I/O Serial Communication Module GFK-2992B Connection Block Diagrams RS232 RXD RS232 TXD RS232 RTS RS232 CTS RS485/422 RXD+ RS485/422 RXD- RS422 TXD+ RS422 TXD- 24 V GND COM EP-5261 Block Diagram For public disclosure... - Page 14 RSTi-EP Slice I/O Serial Communication Module GFK-2992B Function Blocks for Enabling Serial Communication The serial communication module uses 8 registers of input memory and 8 registers of output memory to send and receive the data to any serial device. Function blocks are provided as part of the toolchest drawer to enable faster implementation of serial communication with less efforts on application development.
- Page 15 Function Block FB_RSTI_EP_5261 The RSTi-EP Function Block (FB_RSTI_EP_5261) can be used for the data handling of the serial interface module RSTi EP-5261 (1 Channel Serial Communications, RS-232, 422, 485). It supports simultaneous transmitting and receiving of data (full duplex mode). For example, using RS-232 mode is possible.
- Page 16 Indicates frame fault. Check the parameter choise in the PLC configuration. Errors 16#8080 Indicates (receive)buffer overflow of EP-5261 module. Check the communication. Indicates (receive)buffer overflow and frame fault of EP-5261 module. Check the 16#80C0 communication. 16#8101 Size of receive buffer is > maximum number of received bytes ==> FB abort.
- Page 17 The modbus RTU master function block FB_MBM_RTU_Master is a MODBUS RTU Master block used in combination with the Serial Communication Interface module RTSi EP-5261 and the function block FB_RSTI_EP_5261. Using this block, a maximum of 120 registers / 1024 coils per job per message can be exchanged.
- Page 18 RSTi-EP Slice I/O Serial Communication Module GFK-2992B To enable MODBUS data access, a User Defined Types MBM_Data must be imported. To use the variables, an instance of this UDT must be built. Every data transfer on the bus is initiated and controlled by the master. A high level on the input varible xMODfcStrobe starts the job, and its function is determined by the function code entered at the input variable usiMODfc.
- Page 19 RSTi-EP Slice I/O Serial Communication Module GFK-2992B Supported Function Codes Function Description Output Code Read multiple coil status Reading of bit variables (Coils) Read multiple input status Reading of bit variables (Inputs) Read multiple holding registers Reading of word variables (Register) Read multiple input registers Reading of word variables (Inputs) Force single coil...
- Page 20 Responding Bit of FB_RSTI_EP_5261: Start/Enable Send xQuitt BOOL Responding Bit of FB_RSTI_EP_5261: Error acknowledge TXBUF_FLUSH BOOL Responding Bit of FB_RSTI_EP_5261 flush the transmit buffer of RST- EP-5261 RXBUF_FLUSH BOOL Responding Bit of FB_RSTI_EP_5261: flush the receive buffer of RSTi EP-5261 TXBUF_DISABLE BOOL...
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Page 21: Release History
RSTi-EP Slice I/O Serial Communication Module GFK-2992B Release History Catalog Number Firmware Version Date Comments EP-5261 01.01 Jun 2015 Initial release FB_RSTI_EP_5261 01.00 Aug 2016 Initial release FB_MBM_RTU_Master Important Product Information for this Release Updates None Funcional Compatibility Problems Resolved by this Release...