Technical data

SINAUT MD720-3
C79000-G8900-C210
37
PLC Library SINAUT MICRO SC
8
For wireless GPRS communication a GSM/GPRS-Modem SINAUT MD720-3 is
connected to the PLC S7-200. The GSM/GPRS modem is configured and
controlled by program modules of the S7-200.
The PLC library SINAUT MICRO SC offers the possibility to communicate with the
OPC routing software SINAUT MICRO SC“ as well as with other control systems
via GPRS.
The PLC program modules are executable on the S7-200 CPUs 224, 224XP and
226.
8.1 PLC Program modules
The PLC library provides the following modules for developing a GPRS
communication.
• WDC_INIT
Parameter setting of modem
• WDC_SEND
Execution of transmission tasks
• WDC_RECEIVE
Processing of received data
• WDC_CONTROL
Controlling of communication mode (PPI resp. Freeport)
The library always uses port 0 of the PLC.