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Laurel Electronics LAUREATE SERIES SCALE-WEIGHT METER User Manual

Page 8

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8

P3 - SERIAL COMMUNICATIONS

P4 - ANALOG OUTPUT

N/C
ISO GND
RX
TX
RTS
N/C

GND
TX
RX
RTS

RS232 INTERFACE Computer

6
5
4
3
2
1

ISO GND
BRX
ARX
ATX
BTX
ISO GND

GND
BTX
ATX
ARX
BRX
GND

RS485 INTERFACE - FULL DUPLEX

GND

ATX / ARX
BTX / BRX
GND

RS485 INTERFACE - HALF DUPLEX

1
2
3
4
5
6
7
8

(A') RXD0 -
(B') RXD1 +

(B) TXD1 *
(A) TXD0 -

ISO GND

TXD0
TXD1

RXD1
RXD0

GND

RS485-MODBUS - FULL DUPLEX

RS485-MODBUS - HALF DUPLEX

(B) TX / RXD1
(A) TX / RXD0

ISO GND

(B) TX/RXD1
(A) TX/RXD0

GND

6
5
4
3
2
1

6
5
4
3
2
1

ISO GND


ATX / ARX
BTX / BRX
ISO GND

1
2
3
4
5
6
7
8