Mitsubishi Electric A1S66ADA User Manual page 37

4 PROCEDURES AND SETTINGS BEFORE OPERATION
4 - 11
(2) Fine adjustment procedure for the A/D conversion offset/gain
values
Select the analog input (voltage/current input )
with the analog-input voltage/current switching
setting pin.
Monitor the binary value by the input signals X00
to X0B as 1 word data.
Fine adjustment of
the offset value.
Adjust the CH3 digital output value (X00 to X0B)
using "A/D conversion offset control knob" so
that the value is the same as the offset value.
Fine adjustment of
the gain value.
Adjust the CH3 digital output value (X00 to X0B)
using "A/D conversion gain control knob" so
that the value is the same as the gain value.
POINT
Disconnect the power supply for the PLC CPU or the external power supply for
A1S66ADA at all phases when setting the output range and making voltage/current
selection.
Start
Set the input range by using the analog-
input range switching setting pin.
Input to CH3 the voltage/current
that corresponds to the offset value.
Input the voltage/current that
corresponds to the gain to CH3.
End
MELSEC-A
4 - 11