Owner`s manual

PROGRAMMABLE WALL STATION
Owner’s manual 11
Mounting a Programmable wall station in a US Single Gang Wall Box
For mounting a programmable wall station you have to lock the PWS-C and a front unit of a programmable
wall station together using two screws. Using the supplied connection cables, connect additional front
units. Please also refer to this manual’s corresponding chapters describing the connection procedure for
the front units being used.
4.1 Hardware Configuration
The DIP-switches of the PWS-C allow setting the baud rate (page 11), termination (page 13), and CAN-
address (page 14). An overview of default DIP-switch settings is provided on page 6.
Baud Rate
Determination of a suitable baud rate
The maximum allowable baud rate of the CAN-Bus is indirect proportion to the bus length. For smaller
networks, baud rates of up to 500 kbit/s are possible. Large networks require a lower baud rate (down to
the minimum baud rate of 10 kbit/s). The following table illustrates the relationship between baud rate and
bus length, i.e. network dimensions. Generally, bus lengths over 1000 meters should always employ CAN-
repeaters.
CAUTION:
All devices on the CAN-Bus have to be set to the same baud rate.
USE SPACERS IF
NO PWS-C IS USED