Endress+Hauser Liquiline CM442R - Hardware Settings

Electrical connection Liquiline CM442R/CM444R/CM448R
32 Endress+Hauser
5.4.2 Bus termination
There are 2 ways to terminate the bus:
1. Internal termination (via DIP switch on module board)
"ON"
"OFF"
 28 DIP switch for internal termination
‣
Using a suitable tool such as a tweezer, move all four DIP switches to the "ON" position.
 The internal termination is used.
390 W
220 W
390 W
VP
DGND
B/B' A/A'
 29 Structure of internal termination
2. External termination
Leave the DIP switches on the module board in the "OFF" position (factory setting).
‣
Connect the external termination to terminals 81 and 82 on the front of module 485 for 5‐
V power supply.
 The external termination is used.
5.5 Hardware settings
Setting the bus address
1. Open the housing.