Page 84 May 2014 – TD 293 OPERATING MANUAL – SmartGuard 5100/5120/5300/5320
Table A 16 Signal wiring 9pin D sub connection plug for, RS-422 sensor.
Wiring
Signal, RS422
Description
1
Rx-
Serial input to SmartGuard. Not terminated. See below.
2
Rx+
3
Tx-
Serial output from SmartGuard
4
Tx+
5
Sensor power GND
Internally connected to M12 pin 3,4. Not to be physically
grounded.
6
Not connected
7
Not connected
8
Not connected
9
Sensor PWR out
Internally connected to M12 pin1,2 Max 0.5A
Terminating resistor R=120 ohm must be mounted in the cable connector between Rx+ and Rx- / pin 2 and 1
in order to have a proper line termination as desired by the RS422 specification.
AADI cables for SmartGuard RS422 connection will be terminated as required.