Please, can someone help me pick up data into a S7-200 or Micrologix and put it into Wonderware Intouch? I have to connect 3 such energy meters in a daisy chain in an RS485 n/w. I also have the memory map of these EMs. Please help me in writing this in ladder as I can't find any instructions to pick up data from any of the ports.

sumitgoenka(at)yahoo. com

 

With S7-200 you can configure the port 0 as RS-485 to get the data from EM meter over Modbus. For this you need to use Microwin 4.0Sp3 or higher. That will give you the instruction for Modbus master configuration and polling. If you have S7-226 then you get two ports, and with the other port you can use Wonderware as HMI.

If you want any further information you can contact at Navkar. acs @ live. com or Navkar. acs @ gmail. com