34
en | Installing
AMC2 4W | Installation manual
F.01U.024.965 | V 0.1 | 2006.03
Bosch Sicherheitssysteme GmbH
The following conditions apply for an RS-485 bus system:
•
A bus system consists of a bus line and/or one or more
branch lines.
•
Cable lengths exceeding 100m or 300ft must be installed
as bus lines.
•
Branch lines are branching connections from a bus line. If a
branch line is used. the spur line should be attached
directly to the device.
•
Bus devices are the host computer.
•
Peripheral devices are AMC2 4W which are connected to
the host computer.
•
Maximum cable length of a bus line must not exceed
1200m or 4000ft.
•
The cable length of branch lines must not exceed 100m or
300ft.
•
Any bus line conductor connects up to eight AMC2 4W. The
maximum number of devices must not be exceeded.
•
For longer bus lines connect the AMC2 4W to multiple
AMC-MUX (-EXT) with the host.
To use RS-485 mode at the AMC2 4W, connect the data cables
to the pluggable screw connector of the RS-485 host interface.
Then set the RS-485 address via DIP switch or software and
activate the RS-485 two-wire or four-wire mode via jumper set-
tings.