novice
Member
My project requires three CompactLogix PLCs to communicate status with each other (unit running, unit tripped, recycle valve opened, etc). I am thinking of transmitting this information in a 16-bit register, each bit representing a status information about the PLC. It will be send through an AO channel of one PLC to an AI channel of another PLC. The range is 0 to 16383, which both 1769-IF8 and 1769-OF8C do provide.
So my question: has this been done in any projects before, and what complications should I be aware of? We have always used one PLC for each job, so this is the first time the customer wants three independent PLCs in the same job.
So my question: has this been done in any projects before, and what complications should I be aware of? We have always used one PLC for each job, so this is the first time the customer wants three independent PLCs in the same job.