Interfaces
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8.4
Termination Resistor
As standard the interfaces CANopen and addressable RS422, is supplied with an internal 120 Ω termination
resistor. For sensors with a fixed cable outlet, this can be deactivated via a trimmer located under a protective
cap right next to the LED.
PLEASE NOTE:
With the sealed option V or sensor housings with round connector, the above-mentioned
terminating resistor is not accessible! If no terminating resistor is required for these variants,
this can be specified by ordering option A (see
12 Type Designation).
Figure 13: Termination resistor ON / OFF
Example of a follow-up circuit:
T
ER
M
LED
T
ER
M
LED
0
4
8
C
0
4
8
C
0
4
8
C
0
4
8
C
+
(A - A)
A
A
120 Ω
R1
R1
R1
R1
By default, the 120 Ω termination impedance
is enabled (see "ON" setting in the figure).
In order to deactivate the termination imped-
ance, use a micro screwdriver and turn coun-
ter-clockwise up to the stop.
Termination resistor: ON
Termination resistor: OFF
