IGSS offers an interface for the Modicon PLC series and Modbus compatible systems using the Serial Modbus RTU and ASCII protocols.
The communication driver uses standard RS-232 serial ports to connect to up to 8 PLCs. Each of these PLCs may in turn be connected to other devices (e.g. other PLCs) via a separate network (e.g. Modbus or Modbus Plus networks)
The communication interface supports both direct and dial-up connections.
The IGSS system polls the PLC equipment cyclically according to one of four user-defined time intervals. The time intervals are configurable from 100 milliseconds to 999 seconds. The system automatically groups process data in data blocks – thus fully exploiting the communication link in relation to the present configuration.
|Electrical Interface||:||RS-232 point-to-point connection|
|Types of data||:||String, Fixed point 8, 16, 32, BCD 16, 32, Floating Point etc.|
|PLC types supported||:||All PLCs supporting AEG Modicon Modbus RTU/ASCII protocol. E.g. Milltronics Enviroranger ERS 500, GRUNDFOS CU401 Controller|
|Addressing||:||Node (PLC), data type (Coils, Discrete Input, Word Inputs, and Holding Registers), offset , bit offset (a whole number of words is read or written)|
|Supported platforms||:||Windows Vista, Windows XP, Windows 2003 Server, Windows 2000|
|Max. telegram size||:||Up to 250 bytes per telegram|
|Transmission speed||:||Up to 115 Kbaud depending on the PLC port speed|
|Throughput||:||3-4 telegrams per PLC per second (depending on baudrate)|
|Max. number of channels||:||Up to 8 connections are supported concurrently|
|PC hardware requirements||:||1-8 standard serial ports (COM ports). Standard modem(s) if dialled-up connections are used|
|PC software requirements||:||None|