Mitsubishi Electric MELSEC A Series Manual page 37

4. PRE-OPERATION SETTINGS AND PROCEDURES
POINTS
(1) Set the offset and gain values under conditions of actual use.
(2) The offset and gain values are stored in the A68ADN and are not erased if
the power is turned OFF.
(3) Do offset/gain setting with the PC CPU in the stop mode. If the module is
set to the test mode, A-D conversion is stopped on all channels
Therefore, use the A-D conversion ready signal as an interlock.
(4) Perform the offset/gain setting within the range of -10 to 0 to 10 VDC or
–20 to 0 to 20 mA. If set outside these ranges, maximum resolution and
overall accuracy may not be within the ranges specified.
(5) If grounding at the point marked with *5 described in Section 4.4.2 (no
ground—ground, or ground—removal), redo offset/gain setting from the
first step.
4 − 4
MELSEC-A