Created Date: October 07,2016

Created by: ControlsGuy

No idea if C-More's can talk native Siemens or not, but I probably wouldn't do it anyway, even if they can. 1200's and 1500's talk Modbus/TCP just fine, and so will the C-More (I assume). If you link PLC and HMI with a generic layer in between, you 've compartmentalized your application, and you can easily change out either without breaking the other. Each is just a black box to the other. Even if I were to use the same brand HMI and PLC, I'd do this (plus doing it allows me to pick the best PLC for the project and the HMI I like best and not worry if they can talk to each other). IMO, viewing the PLC and the HMI as a package is a mistake. Manufacturers are all pitching higher levels of integration between the two, but if you buy into that, the chance exists that a good PLC will drag a mediocre HMI across the line or vice versa (which may be what the manufacturers intend). You might not end up getting the best of both.