I am preparing to upgrade our plant HMI and PLC systems. Currently we use Modicon 984-785E PLC and Modicon remote I/O. Due to HMI considerations, I really want to use Siemens software which requires Siemens PLC. I have been told its possible to keep the existing Modicon I/O and talk through the 785E to the S7? Due to the costs associated with changing the I/O to Siemens, this solution would be nice.
Can anyone offer any information on this subject?
Can anyone offer any information on this subject?