139
Pin Assignment Chart, 12-contact Round Female Connector,
RS-485 (Optional):
Pin A: F2 Function Key / Control Output 3 “Heavier”
Pin B: RS-485: RxD – TxD – N; RS-232: TxD
Pin C: RS-485: RxD – TxD – P; RS-232: RxD
Pin D: RS-485: Not Connected; RS-232: DTR
Pin E: Signal GND
Pin F: + 5 V
Pin G: Left Draft Shield Key / Control Output 1 “Lighter”
Pin H: RS-485: Not Connected; RS-232: CTS
Pin J: Cal Function Key / Control Output 2 “Equal”
Pin K: p/r Key / Universal Switch
Pin L: t Key / Control Output 4 “Set”
Pin M: +12 V Output
Connecting a Bar Code Scanner or an Extra Keyboard
You can connect a bar code scanner or an extra keyboard using the following
female connectors:
– 25-contact D-Submini female connector (using an adapter)
– 12-contact round female connector (using an adapter)
– 5-contact direct DIN female connector
Pin Assignment for the 5-Contact DIN Female Connector:
Pin1: Keyboard Clock
Pin2: Keyboard Data
Pin3: Not Connected
Pin4: Signal GND
Pin5: +5 V
! The YRB02FC bar code scanner requires an external power source if you have
connected a printer and a second display to the balance.
The PC keyboard also requires an external source of power.
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