Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 267

Processing details
• These instructions subtract the BCD 4-digit data in the device specified by (s2) from the BCD 4-digit data in the device
specified by (s1), and store the operation result in the device specified by (d).
(s1)
0 6 7 8 - 0
• If an underflow occurs, the result will be as follows. In this case, SM700 does not turn on.
0 0 0 1 - 0
Operation error
Error code Description
(SD0)
3405H The BCD data in the device specified by (s1) is out of the range, 0 to 9999.
The BCD data in the device specified by (s2) is out of the range, 0 to 9999.
(s2) (d)
2 3 4 0 4 4
Filled with 0s.
0 0 3 9 9 9
4
8
6.2 Arithmetic Operation Instructions
6 BASIC INSTRUCTIONS
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