Schneider Electric Processor Adapter manual Cluster Mode Cabling Schemes, Clusters in a

Using the Modbus Plus Ports

Cluster Mode Cabling Schemes

Introduction	In cluster mode, Momentum I/O devices may be placed in small groups, connected
	by much shorter lengths of cable than in standard Modbus Plus cabling schemes.
	You may use clusters and standard single nodes in the same network.
Length of
	The maximum length of cable from one end of the network to the other is 1500 ft.
Network	(450 m) if no repeaters are used.
	You can use up to three Modicon RR85 Repeaters to extend the cable to up to
	6000 ft. (1800 m). Each repeater allows you to extend the cable 1500 ft. (450 m).
	Description	Part Number
	Modicon RR85 Repeater	NW-RR85-000
Number of
	The maximum number of devices in a network is 64:
Devices in	λ If you use only Momentum products, you may use up to 64 devices on one
Network
	cable segment without a repeater.
	λ If you use a mixture of devices, you may use up to 32 devices on one cable
	section. You must use a repeater to connect to another cable section. You may
	use up to three repeaters and four cable sections in all.
Clusters in a
	The maximum number of clusters in a network is 8. The maximum number of
Network	devices in a cluster is 8. Only Momentum devices may be used in the cluster.

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