8 | Functions Baumer
40 Operating Manual OM20/ OM30 RS485 with Modbus RTU | V1
8.10 Function of the LED
In the factory settings, the function of the LED follows the alarm output. This means that the out-
put is activated as soon as no measured value can be recorded. The function of the LED can be
switched via Modbus RTU so that it follows the function of the parameterizable switching output.
Modbus RTU command – holding register: LED Function
Address 1102 – LED Function:
Address Access
Number of
registers Data type Description
1102 Read/write 1 uint16_t Determine the function of the LED:
n
100 = switching output
n
101 = alarm output
8.11 Function of the Teach button
With the Teach button function (Local User Interface), you have the option of specifying the
mode of the Teach button. You have a choice between the Xpert (factory setting) and Xpress
modes. The mode is selected via Modbus RTU.
Adjustable parameters in the Xpert mode:
n
Zero position
n
Reset the sensor to the factory settings
Adjustable parameters in the Xpress mode:
n
Zero position
The Teach button is automatically deactivated after 5 min (timeout can be parameterized via
Modbus RTU).
Teaching the zero position (in the Xpress mode)
Instruction:
a) Place the measurement object at the desired position for the zero position.
b) Keep the Teach button pressed for 2 seconds.
ü Green LED blinks with 2 Hz.
Result:
ü Teach-In ok: Sensor goes back to the operating mode.
ü Teach-in not OK: Green and yellow LEDs blink simultaneously with 8 Hz.
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