8 | Functions Baumer
32 Operating Manual OM20/ OM30 RS485 with Modbus RTU | V1
8.5 Measurement range
With the Measurement range function, the limits of the measurement range can be set so that
the active measurement range is limited to a partial range of the maximum measurement range
of the sensor. The purpose of this function is to eliminated interfering reflections (e.g. if there is
a pane of glass between the sensor and the object to be measured).
n
The Near limit of the measurement range must be larger than the minimum limitation of the
sensor (Sdc).
n
The Far limit of the measurement range must be smaller than the maximum limitation of the
sensor (Sde).
The alarm output is activated as soon as no object to be measured is located within the config-
ured measurement range or the signal quality is insufficient.
Modbus RTU command – holding register: measurement range
Address 200 – Distance Near:
Address Access
Number of
registers Data type Description
200 - 201 Read/write 2 float32_t Measurement range limit near [mm]
Address 202 – Distance Far:
Address Access
Number of
registers Data type Description
202 - 203 Read/write 2 float32_t Measurement range limit far [mm]
Address 220 – Meas Range to MAX:
Address Access
Number of
registers Data type Description
220 Read 1 x Maximize measurement range: Call
up the function by writing any num-
ber.
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