Hello All,
Just wondering if you have any suggestions for taking a single point input from a couple sites to one site with two outputs over a telephone line. Looking to avoid cost of PLC and radios (towers etc.) I would doubt that I will find anything with just one input but hopefully you get the idea. Maybe a two point discrete input combined with a modem that dials the main modem upon alarm. This main modem activates the associated output to the main plant PLC input.
Any suggestion would be great
Just wondering if you have any suggestions for taking a single point input from a couple sites to one site with two outputs over a telephone line. Looking to avoid cost of PLC and radios (towers etc.) I would doubt that I will find anything with just one input but hopefully you get the idea. Maybe a two point discrete input combined with a modem that dials the main modem upon alarm. This main modem activates the associated output to the main plant PLC input.
Any suggestion would be great
