Panasonic FP7 Series Command Reference Manual page 734

14.17 SADD (String Addition)
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Precautions for programming
● The character data of the [D] area from before performing the operation is overwritten.
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Flag operations
Name
SR7
SR8
(ER)
14-84
Description
To be set in the case of out-of-range in indirect access (index modification).
To be set when the string range specified by [S1] or [S2] is out of the accessible range.
To be set when the destination range is outside the accessible range.
To be set when the connected string exceeds the maximum number of characters.
WUME-FP7CPUPGR-12