LMS531
Alarm system
Alarm A
Alarm B
0Ω
Alarm RA
Alarm RB
1
Figure 59: Resistance-monitored connection of the LMS531 Security outputs to an alarm system
1
Alarm system
Wiring of the RS232 or RS422 interface
A shielded cable is required for connecting the RS-232 or the RS-422 interface.
NOTE
Observe the maximum length of cable according to
see "General conditions for data
RxD
TxD
Device
GND
TxD
RxD
GND
RS-232
RS-422
RD+
RD-
TD+
TD-
GND
Device
Host
Host
TD+
TD-
RD-
GND
RD+
Figure 60: Wiring of the RS232 or RS422 interface
ELECTRICAL INSTALLATION
6
8013796/1ALS/2021-03 | SICK
O P E R A T I N G I N S T R U C T I O N S | LMS5xx
71
Subject to change without notice