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LaserSpeed 8000-3 Instruction Handbook
Interfacing with the LS8000-3
Part No. 93463 / Drawing No. 0921-01561 Page 57 of 221 Revision A (Sep 2007)
Transmit
Receive
Pin 1 (TX+)
Pin 2 (TX-)
Pin 3 (RX+)
Pin 4 (RX-)
Computer/PLC
RX+
RX-
TX+
TX-
100Ω
Cable Jacket
Cable Shield
RS-422 Cable
Shielded,
Two Twisted 100 PairsΩ
Drain Wire/Shield
RS-422 Serial Pinouts
Gauge DB9
Pin Number
Gauge Signal
Description
Computer Pin
Number
Computer Signal
Description
1 RS422 Transmit + varies RS422 Receive + (B)
2 RS422 Transmit - varies RS422 Receive – (A)
3 RS422 Receive + varies RS422 Transmit + (B)
4 RS422 Receive - varies RS422 Transmit – (A)
5 Signal Ground varies Signal Ground
The computer RS-422 pinout can vary with the RS-422 card used. The signal
descriptions listed above should be matched to the signal descriptions listed in
the documentation provided with the RS-422 adapter.
Analog Output Voltage/Ground (Pins 6-7)
Analog Output Specifications
Voltage Range 0-2V
Resolution 12-bit
Minimum ∆V (Step Size) 0.5mV
Load 1kΩ minimum
Filtering 0.1µF Capacitor
Recommended across
Output to Signal Ground