Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 293

Operation error
Error code Description
(SD0)
2821H The device ranges starting from the ones specified by (s1) and (d) are overlapping (except when the same device is specified for (s1) and
(d)).
The device ranges starting from the ones specified by (s2) and (d) are overlapping (except when the same device is specified for (s2) and
(d)).
6 BASIC INSTRUCTIONS
6.2 Arithmetic Operation Instructions
6
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