Generic TCP/IP Driver ID:34

Interface Description

IGSS offers a TCP/IP interface for third party TCP/IP servers. The communication driver uses a standard Ethernet or Token Ring interface board in the PC together with Windows’ TCP/IP protocol stack to access a remote TCP/IP server. The driver also supports PPP on Direct Line or Dial Up lines through the standard serial RS-232C port.

The IGSS system polls the TCP/IP server cyclically according to one of four user-defined 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. The driver also supports unsolicited events from the server.

TCP/IP Message Format

message length 32 bit 
opcode 32 bit
node 32 bit 
data group 32 bit
word offset 32 bit
data 0 16 bit
data n 16 bit

Message length: total length of message including header.
Opcode: 0.
Node: configurable.
Data group: 0: Byte, 1: Word, 2: Dword, 3: Float.
Word offset: zero based offset for start of reading and writing.

Click here to download a pdf document containing technical documentation of the message structure.

Technical Data

Electrical Interface : Standard Ethernet and Token Ring. RS-232C.
Protocol : TCP/IP V4
Types of data : BYTE, WORD and DWORD
PLC types supported : All programmable devices with a TCP/IP interface
Supported platforms : Windows Vista, Windows XP, Windows 2003 Server, Windows 2000
Max. telegram size : 255 data words
Max. number of channels : Up to 8 connections are supported
Max. number of nodes : 32
PC hardware requirements : Standard PC Ethernet / Token Ring board or RS-232C interface
PC software requirements : Standard Microsoft Windows TCP/IP protocol stack