Access Modular
Controller 2
Installing | en 27
Bosch Security Systems B.V. 2019-11 | V02 |
4.9 RS-485 Host Interface
The RS-485 host interface of the controller can be set for using
a 2- or 4-wire connection. Up to eight controllers can be used on
one host bus.
Figure4.9: Configuration of a RS-485 host system
Position Description
1 Host
2 RS-485 bus
3 Access Modular Controller
The following conditions apply for a RS-485 bus system:
– A bus system consists of a bus line and/or one or more
branch lines.
– Cable lengths exceeding 100m (300ft) must be installed
as bus lines.
– Branch lines are branching connections from a bus line.