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Communication with devices from the ABB company

It is possible to communicate with various devices from the ABB company in various ways. List of possibilities of some of them follows:
 

The communication capabilities of ABB PLCs

AC800 PLC devices:

This PLC model line is designed for process automation. There are multiple options for communication with these devices, but the most commonly used is the OPC server.

A list of supported communication interfaces and protocols of the PLC:

- RS232 (standard 2 ports on the processor) with the support of Modbus Master, ASCII
- Ethernet (standard 2 ports on the processor for Control Network Bus redundancy)
- Modbus TCP/IP (optional communication module)
- PROFIBUS DP V1 (optional communication module – in the Profibus Master mode)
- RS232 (optional communication module supporting the Modbus Master, Comli master/Slave, Siemens 3964 master, ASCII protocols)
- MasterBus 300 (optional communication module for connection to ABB Advant Controller systems)
- INSUM (protocol IEEE 802.3, optional communication module)
 
AC500 and AC31 PLC devices:

These model lines of PLCs are designed for discrete automation.

- AC500 and AC31 PLCs of the 90 model line belong to the higher class of PLC devices and thus having wider communication capabilities.

A list of supported communication interfaces and protocols of the PLC:

- RS232 (normally 2 ports on processor, on 07SL97 there is 1 port)
- RS485 (on additional kommunication module 07KP93
- Ethernet (optional property of processors)
- PROFIBUS DP (optional property of processors)
- ARCNET (optional property of processors, normally on 07SL97)
- CANopen (optional property of processors)
- PCI (normally on 07SL97)
- AC31 PLCs of the 40/50 model line belong to the basic class of the PLC devices with the communication capabilities focusing mainly on Modbus RTU and DDE server.
- The Modbus RTU protocol is implemented on:
- the inbuilt serial communication port COM1 (RS232/RS485 interface)
- the additional communication module 07KP93 (COM3, COM4) with the RS232/RS485 serial interface.
- The DDE server is included in the development environment AC1131. The PROMOTIC application can use the DDE communication to connect to the server and communicate with these devices.
 
T200 Procontic PLC devices

ABB Procontic system is obsolete and it is not recommended to use it in new applications.

For this communication in the PROMOTIC system can be used: PmABBT200 - Driver for communication with ABB Procontic devices of T200 type.

Selected communication options for the PROMOTIC applications and ABB devices

Communication by OPC server:

PROMOTIC application gets the data from the OPC server by means of the PmOpcClient object. See also: Communication by standard interface OPC

The OPC server is included into the development environment for programming the ABB devices (AC31, AC500, AC800). This OPC server can be installed separately.

The OPC server supports also PLC routing. The OPC server can communicate:

- via the serial link RS232. It supports also modem dial-up.
- in the Ethernet network.
- in the Arcnet network
- through the PCI interface. In such case the Slot-PLC 07SL97 is used (PLC as a PC card).
 
Communication by ASCII protocol:

On the PLC device side (AC31, AC500, AC800) there is implemented the ASCII protocol on:

- the inbuilt serial communication port COM1 or COM2 (RS232 interface)
- the additional communication module 07KP93 (COM3, COM4) with the RS232/RS485 serial interface.

For this communication in the PROMOTIC system can be used: PmChar - Driver for communication by user defined ASCII/BIN protocol.

 
Communication by Modbus protocol:

The Modbus RTU and Modbus TCP/IP protocols are supported

For this communication in the PROMOTIC system can be used: PmModbusMr - Driver for communication by Modbus Master protocol.

For easy integration of this driver into the application it is handy to use:
 
Communication via Ethernet:

This communication is suitable for applications that require fast data transfer. Can be used:

- OPC server
- Direct communication by UDP sockets: By means of the PmData object and the socket communication of the UDP without PROMOTIC head type it is possible to communicate directly with PLC. Then this communication is very fast. But the designer must know the structure of UDP sockets used in PLC's (7-bytes head and then the binary data follows).
 
Communication over ARCNET industrial communication bus:

This communication is suitable for applications that require fast data transfer. The ARCNET communication port can be a part of the PLC. The PLC is supplied without or with the ARCNET (another order number tells this). The software is inbuilt.

It is possible to communicate over the ARCNET bus in the PROMOTIC system by means of the OPC server: The communication card F-ARC E3 type must be in the PC (for PCI or ISA bus) or Slot-PLC 07SL97.

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