Apogee AC-422 Owner's Manual - Page 6

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OPERATION AND MEASUREMENT

Wire up to green block (AC-422) and plug in.

Wiring Configurations

Below is an example wiring configuration of Apogee Modbus sensors. Please see your respective sensor's product

manual to find the correct wiring configuration for your sensor as wiring configurations come in two variations

depending on the protocol.

Wiring

The Green wire should be connected to Ground to enable RS-485 communication, or it should be connected to 12

V power for RS-232 communication. Text for the White and Blue wires above refers to the port that the wires

should be connected to.

White: RS-232 RX / RS-485 Positive

Blue: RS-232 TX / RS-485 Negative

Green: Select (Switch between RS-232 and RS-485)

Black: Ground

Red: Power +12 V