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MODBUS/GPRS driver ID:81


Interface Description

IGSS32 offers a TCP/IP interface for the MODBUS/TCP type PLC equipment. A standard Ethernet interface board in the PC together with standard Windows TCP/IP protocol stacks enables IGSS32 to communicate with CPUs using the Open Modbus/TCP specification. The communication interface support both direct and dialled-up connections. The IGSS32 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 the communication link in relation to the present configuration

Technical Data

Electrical Interface:Ethernet.
Protocol:According to OPEN MODBUS/TCP SPECIFICATION
Types of data:String, Fixed point, 8,16,32, BCD 16,32 Floating Point etc.
PLC types supported:All PLC's complaying to the OPEN MODBUS/TCP SPECIFICATION with RTU encoding.
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:250 butes per telegram
Transmission speed:Ethernet speed
Throughput:Depend on the Ethernet
Max. number of channels:Up to 150 channels are currently supported
Max. number of nodes:Up to 255 nodes.
PC hardware requirements:Standard PC ethernet interface board.
PC software requirements:Standard Microsoft windows TCP/IP protocol stack