sharwood

Yes - I think I'd like to write my own client. I have created a dll to handle all the acyclic slave stuff - now I just need to read and write values to the PLC - thanks for the pointers - I am now buried in OPC 101!

JesperMP I'm not too sure about OPC - there seems to be a lot of info out there but it does seem a little confusing at first glance. Can you recommend a good place to start? I looked at the Deltalogic site - looks useful but unfortunately doesn't support the Siemens card over DP. Thanks

Hello all, I would like to create an application to read register status/values of an S7-300 315 over DP using a CP5613A2 card. I have managed to write up some code to read and write parameter info to HART and PA field devices and am able to do this on a micrologix (DF1) device but the siemens SDK for the 5613 doesn't address master to master comms. The system is using Agilent VEE Pro software to test field devices during manufacture - I'd want to be able to read PLC status and use the PLC to handle safety/power switching etc on a production line test system from my own client app. Any pointers in the right direction would be appreciated. Thanks