Step 1: Mount the AC-4311
Boxed version: Use the metal housing as a template and mark the wall. Drill the
wall and plug if necessary, then screw the housing to the wall.
PCB Version: Fit the PCB in a suitable housing using the four self-adhesive feet
supplied.
Step 2: Connect the RS485 Bus
The RS485 bus must be wired with a twisted pair screened cable. Please refer to the
cable specifi cations on page 1.
The RS485 ‘+’ and ‘–’ must be on the same twisted pair (e.g. Green & Green/White).
A correctly wired RS485 data line is shown in the diagram below.
If the I/O Expansion Board is at the end of the RS485 bus, then Jumper J24 must be
fi tted to ensure that the network is correctly terminated.
At either end of bus
In middle of bus
2
Mount the AC-4311
