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2-4 OMR-6520
Pin Definitions
Pin # Signal Name Description
1 (Y)DATA+ RS-485 transmission line, positive
2 (G)DATA- RS-485 transmission line, negative
4 TX+ RS-422 transmission line, positive
5 TX- RS-422 transmission line, negative
6 RX+ RS-422 receiving line, positive
7 RX- RS-422 receiving line, negative
9 (R)+VS OMR power supply, +10V~+30V
10 (B)GND OMR ground
-- RS-232 IN 9-pin RS-232 connector
Connection Between Host and OMR-6520
Host RS-232
RTS ’
GND •
TXD Ž
RXD •
OMR-6520 RS-232
‡ RTS
… GND
ƒ TXD
‚ RXD
Host
Computer
DATA +
DATA -
+Vs GND
OMR-6520
RS-232/RS-485
Converter
RS-232