from the Service department...
Modbus distance Maximum
Local and wide area networking in factory automation. topic
Posted by Sathis on 16 November, 2009 - 3:29 am
we would like to know the modbus communication distance maximum.


Posted by Darrin Hansen on 16 November, 2009 - 9:35 am
Modbus itself specifies no distances, as it doesn't even specify any particular physical layer. Modbus can be carried over any media, such as RS-485, RS-232 etc., and the distance limitations would then be the ones particular to that physical layer.

Darrin

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