Commissioning
Multi
MAXX
HD
30
PR-2007-0350-GB • Subject to modifications • R2-04/2016
There are terminating resistors on the unit printed circuit boards of the
MATRIX 300x/400x control system.
Switching on the terminating resistors at the beginning and end of the line:
•
Turn the DIP switch on both users (e.g. control panels, unit PCBs or modules) to
“ON”.
The line beginning and line end correspond to the start and end of the bus cable. The
terminating resistors should also be switched back on for stand-alone units.
MATRIX
200x
300x
400x
400x+IO
9
9
9
Fig. 10-2: Setting terminating resistors
DIP switch
Function
1
2
OFF
OFF
Terminating resistor switched off
ON ON
Terminating resistor switched on (default setting)
Control
Unit printed circuit board
Module
Module
Module
Control
Line start
Line end
panel
panel
NOTE!
With default settings the DIP switches are set to “ON/ON” and must be switched off
if used as an intermediate unit.