CDM420-0006
PNP sensor
4
V
S
GND
Out
GND
S6
V
S ext
V
in
CMC600
No
YES
S8 : CMC
ON
OFF
S6 : SGND
17 SGND
8
Shield
39 +24 V*
A
Aux In
B
+24V*
SensGND
Trigger sensor
1
5
2
3
CDM420-0006
V
in
GND
S6
CMC600
ON
OFF
S6 : SGND
No
YES
S8 : CMC
17 SGND
8
Shield
39 +24 V*
A
Aux In
B
+24V*
SensGND
3
1
V
S ext
GND
A
17
2
2
Figure 58: Left: Trigger sensor connected potential-free and supplied with power externally. Right: Alternatively switch,
!
sup‐
plied with power by connection module CDM420-0006 or
"
connected potential-free and supplied with power externally.
Switch setting S3 then as in left figure.
1
Trigger sensor, e.g. for read cycle generation
2
External supply voltage V
S
ext
3
Input voltage V
in
4
PNP sensor
5
Supply voltage V
S
Table 48: Assignment of placeholders to the digital inputs
CDM420-0006
Device
Terminal A
Signal B
External input C
18
Aux In 1
1
19
Aux In 2
2
Function of switch S6
Table 49: Switch S6: SGND - GND
Switch setting
Function
ON
GND of the trigger sensor connected with GND of CDM420-0006 and
CMC600
OFF
Trigger sensor connected potential-free at CDM420-0006 and
CMC600.
Common, isolated reference potential of all digital inputs is SGND.
Functional principle of the external digital inputs
As a software-controlled operation, the CMC600 automatically transmits the output
states of its physical digital inputs “Aux In 1” and “Aux In 2” in the connection module
via the connecting cable to the serial Aux interface of the device. The device imple‐
ments the states internally on its logical inputs “External input 1” and “External
input 2”.
NOTE
The external digital inputs are software-defined. This results in a delay of maximum
15 ms when transmitting the signal input at the CMC600 to the device.
ANNEX
13
8022502/15NT/2020-02-11 | SICK
O P E R A T I N G I N S T R U C T I O N S | Lector621
99
Subject to change without notice
