Laurel Electronics LAUREATE SERIES 2 DIGITAL PANEL METER - Manual (Page 7)

7
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