Panasonic FP7 Series Command Reference Manual page 462

10.3 MAX (Acquiring the Maximum Value)
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Flag operations
Name
SR7
SR8
(ER)
10-12
Description
To be set in the case of out-of-range in indirect access (index modification).
To be set when [S1] is larger than [S2].
To be set when the [S1] device and the [S2] device differ.
WUME-FP7CPUPGR-12