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.
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.
|Electrical Interface||:||Standard Ethernet and Token Ring. RS-232C.|
|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|