User guide

Communication Capabiliites
890 USE 108 00 August 2001 85
Communication
Parameters Slide
Switch-Bridge
Mode
Bridge mode allows you to access nodes on a Modbus Plus network from a Modbus
master device (connected to the standard Modbus port). To set the Modbus Plus
bridge mode for port 1 of the E984-265/275/285 Controllers, set the slide switch to
either the ASCII or RTU position.
In the memory position (MEM), bridge mode is enabled (or disabled) by the Modbus
port parameter setting in the Controller configuration table. If bridge mode is
enabled, the port always uses the Modbus Plus address.