OHAUS Ranger RC, Instruction Manual

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7.1.7 Interface connections
The compact scale can be fitted with a maximum of 2 interfaces. The following com-
binations are possible:
7.1.8 Assignment of the interface connections
COM1 COM2 Note
RS232 –
RS232 RS232
RS485 RS232 COM1 can be optionally operated as RS422 or RS485
RS232 Ethernet
RS232 USB
RS232 Digital I/O
RS232 Analog second
scale interface
Pin RS232
(COM1/
COM2) RS422
(4-wire,
COM1) RS485
(2-wire,
COM1) Digital I/O
(COM2) Analog
Interface
1 – – – GND + Excitation (+8.2 VDC)
2 TxD1/2 TxD1– TxD1–/RxD1– OUT0 + Sense
3 RxD1/2 RxD1– – OUT1 Shield
4 – – – OUT2 – Sense
5 GND GND GND OUT3 – Excitation (GND)
6 – – – IN0 –
7 – TxD1+ TxD1+/RxD1+ IN1 + Signal
8 – RxD1+ – IN2 – Signal
9 VCC VCC VCC IN3 –
Ranger RC Technical data and accessories
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