Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 275

Processing details
• These instructions subtract the BCD 8-digit data in the device specified by (s2) from the BCD 8-digit data in the device
specified by (s1), and store the operation result in the device specified by (d).
(s1)+1 (s1) (s2)+1
5 6 7 8 9 1 2 3 - 0 1 2 3 4 5 6 7
(d)+1, (s1)+1, (s2)+1: Upper 4 digits
(d), (s1), (s2): Lower 4 digits
• If an underflow occurs, the result will be as follows. In this case, SM700 does not turn on.
1 2 3 4 5 6 7 8 - 1 2 3 4 5 6 7 9
Operation error
Error code Description
(SD0)
3405H The BCD data in the device specified by (s1) is out of the range, 0 to 99999999.
The BCD data in the device specified by (s2) is out of the range, 0 to 99999999.
(s2) (d)+1 (d)
5 5 5 5 4 5 5 6
Filled with 0.
9 9 9 9 9 9 9 9
6 BASIC INSTRUCTIONS
6.2 Arithmetic Operation Instructions
6
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