The probe has two output modes: digital mode (RS-485 using Modbus) and analog mode (current output).
Both the digital output and analog output use the same pins in the M12 male connector (pins #2 and #4), but only one of the output modes can be active at the same time. You select which output mode is active with the output control pin #5.
- If the probe is powered on, power off the probe.
Select the output mode with pin #5:
- To set the probe in analog mode, connect pin #5 to ground.
- To set the probe in digital mode, leave pin #5 floating.
- Power on the probe. The probe checks the state of pin #5 (grounded or floating) and goes in the selected output mode.