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Hello members, 2 PLCs with 100 i/o s situated at 2 stations 10 kms apart have to be controlled and monitored from one of the stations,the other being unmanned. which is the most cost effective method for communication? whether standard PLC s like AB,GE-FANUC etc can be used for this? Any help is appreciated Thanks in advance, DHANYA KULKARNI <[email protected]>