Schneider Electric Processor Adapter manual Four-Wire Cabling Schemes for Modbus RS485 Networks

Using the Modbus Ports

Four-Wire Cabling Schemes for Modbus RS485 Networks

Introduction	Four-wire cabling schemes may be used for single master/slave communications.
	Only one master is allowed. The master may be located anywhere in the network.
Length
	The maximum length of cable from one end of network to other is 2000 ft. (609 m).
Number of
	The maximum number of devices in a network is 64 if all are Momentum devices.
Devices	Otherwise, the maximum is 32.
Termination
	You must terminate both ends of the cable run with special terminating resistors.
	Description	Part Number
	Modbus Plus or Modbus RS485 Terminating RJ45 Resistor Plugs	170 XTS 021 00
	(pack of 2).
	Color code - red
Master Cable
	The master of this master/slave cabling scheme must be connected on at least one
	side to a master cable, a special cable that crosses the transmit and receive lines.
	The other side may be connected to a master cable, or, if the master is at one end
	of the cable run, a terminating resistor.
	Description	Part Number
	Modbus RS485 (RJ45/RJ45) Master Communication Cable	170 MCI 041 10
	Modbus Plus or Modbus RS485 Terminating RJ45 Resistor Plugs	170 XTS 021 00
	(pack of 2).
	Color code - blue
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