Installation guide

36 Introducing the Modbus Plus Network
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The types of devices used in your application determine how many
Modbus Plus networks you can join.
V You can address a programmable controller destination on a remote
network that is up to four networks away from the originating node
(that is, with four bridges in the message path).
V Hostbased network adapters can be addressed up to three
networks away (through three bridges).
V A single Modbus slave device at a Bridge Multiplexer port can also
be addressed up to three networks away. A slave device that is part
of a Modbus network at a Bridge Multiplexer port can be addressed
up to two networks away (through two bridges).