We are using Cimplicity as HMI only for GUI. We have developed our own software which polls data using dialup/leased line and pass the data to Cimplicity using DDE. Now we want to use Cimplicity to poll the PLC through dialup/leased line communication. It would be a great help to me if somebody can suggest a way to use Cimplicity to get data using Dialup communicaiton. The protocol of the PLCs are Modbus and DF1 (Allen Bradley)

 

You will have to use the scripting capability of the scada package in order to establish the communication. Your problem will be that the scada system once it connects likes to maintain it's connection.