Hi All,

I am having an water level control application. This Apartment have 4 buildings, each building have 2 Tank, so total 8 tanks. Each tanks have 6 limit switch (including redundant), so there are 8*6=48 Limit switches. All 4 buildings are 21 stories. PLC is located at basement. Can i have one I/O module (1762 MICROLOGIX EXPANSION I/O) at top of the building, where i can connect all limit switches and then connect this I/O module to the PLC (processor) at basement? Hope this is the so called Remote I/O concept...

Is there any better architecture?

 

The only way to have remote I/O in a micrologix system is with devicenet and a 1500 CPU.

An option that works just as well and is much cheaper is with 1100 or 1400 CPUs and use the built in ethernet channel to message the I/O status back and forth.

--
Bob