Applies To:
  • CitectSCADA

I am trying to connect a PLC via a modem. I am using the initialisation string in the Ports to dial the phone number, however the modem starts to dial the number and then hangs up. What is causing this problem. 

The documentation for the delay syntax is incorrectly documented. The example shows a modem dial command as:


This is incorrect the () should be {} brackets as follows:


CIT has confirmed this to be a problem in Citect for Windows versions 5.00 and 5.00 Service Pack A. This problem has been fixed in version 5.01.