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Cluster mode cabling schemes, continued – Schneider Electric Processor Adapter User Manual

Page 188

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Using the Modbus Plus Ports

188

870 USE 101 10 V.2

Cluster Mode Cabling Schemes, Continued

Termination

You must terminate both ends of the network with special terminating resistors.

Cable Between
Nodes in a
Cluster

The minimum length of cable between nodes in a cluster is 10 in (.25 m).

Cable Between
Clusters

The minimum length of cable between clusters is 10 ft. (3 m).

Drop Cables

Drop cables connecting a cluster to the trunk cable must be at least 10 ft. (3 m)
long. A 10 ft. drop cable is available. A 30 ft. drop cable may be fabricated by
removing one RJ45 connector from a 30 ft. interconnect cable. Connect the open
end of the cable to a Modbus Plus tap, using the wiring illustrations on page 194.

Continued on next page

Description

Part Number

Modbus Plus or Modbus RS485 Terminating RJ45 Resistor Plugs
(pack of 2)

170 XTS 021 00

Description

Part Number

Modbus Plus / Modbus RS485 Short Interconnect Cable

170 MCI 020 10

Modbus Plus or Modbus RS485 3 ft. Interconnect Cable

170 MCI 020 36

Description

Part Number

Modbus Plus or Modbus RS485 10 ft. Interconnect Cable

170 MCI 021 80

Modbus Plus or Modbus RS485 30 ft. Interconnect Cable

170 MCI 020 80

Description

Part Number

Modbus Plus 10 ft. Drop Cable

170 MCI 021 20

Modbus Plus or Modbus RS485 30 ft. Interconnect Cable

170 MCI 020 80