HyCassette-Geko
Commissioning
PR-2015-0159-GB • Subject to modifications • R1-11/2015
108
7.5
Terminating resistors
Unit printed circuit boards of the MATRIX 3500 control system and MATRIX
OP5X control panels are equipped with terminating resistors.
Terminating resistors are placed at line start and end (Fig. 7-5):
•
Turn the DIP switch of both users (e.g. control panels, unit MCBs or modules)
to “ON”.
The line beginning and line end correspond to the start and end of the bus cable.
The terminating resistors must also be switched on for stand-alone units.
MATRIX
3500
✓
Fig. 7-5:
Setting terminating resistors
DIP switch
Function
1
2
OFF
OFF
No terminating resistor
ON
ON
Terminating resistor switched on (default setting)
ONON
O
N
Unit circuit boards
Unit
Unit
Module
Control panel
Line beginning
Line end
terminal
NOTICE!
The default setting of the DIP switches ex factory are “ON/ON” and must be
switched off if used as an intermediate unit.