Mitsubishi MELSEC iQ-F FX5 series Programming Manual page 207

Processing details
• These instructions subtract (n) point(s) of 16-bit binary data from the device specified by (s1) and the (n) point(s) of 16-bit
binary data from the device specified by (s2), and store the subtraction results in the device specified by (d).
• Block subtraction is performed in 16-bit units.
Ex.
If device has been specified for (s2)
b15 ··· b0
(s1) 8765 (BIN)
(s1)+1
8888 (BIN)
(s1)+2
9325 (BIN)
(n)
(s1)+(n-2)
5000 (BIN)
(s1)+(n-1)
4352 (BIN)
If constant is specified for (s2)
b15 ··· b0
(s1) 8765 (BIN)
(s1)+1 8888 (BIN)
(s1)+2
9325 (BIN)
(n)
(s1)+(n-2)
5000 (BIN)
(s1)+(n-1)
4352 (BIN)
• If an underflow or overflow occurs for operation result, the result will be as follows. In this case, the carry flag (SM700) does
not turn ON.
If signed is specified
K-32767 K2
-
(8001H) (0002H)
K32767 K-2
-
(7FFFH) (FFFEH)
Operation error
Error code Description
(SD0/SD8067)
2820 The range of (n) point(s) of data starting from the device specified by (s1), (s2), or (d) exceed the corresponding device range.
2821 The device range for (n) point(s) beginning from (s1) overlaps with that of (n) point(s) starting from (d).
(Does not apply when same device has been specified for (s1) and (d).)
The device range for (n) point(s) beginning from (s2) overlaps with that of (n) point(s) starting from (d).
(Does not apply when same device has been specified for (s2) and (d).)
b15 ··· b0
(s2) 1234 (BIN)
(s2)+1 5678 (BIN)
(s2)+2 9876 (BIN)
(n)
-
(s2)+(n-2) 4321 (BIN)
(s2)+(n-1)
4000 (BIN)
b15 ··· b0
(s2) 8880 (BIN)
-
If unsigned is specified
K32766 K0
-
(7FFEH) (0000H)
K-32767
(8001H)
b15 ··· b0
(d) 7531 (BIN)
(d)+1 3210 (BIN)
(d)+2 -551 (BIN)
(d)+(n-2) 679 (BIN)
(d)+(n-1)
352 (BIN)
b15 ··· b0
(d) -115 (BIN)
(d)+1 8 (BIN)
(d)+2 445 (BIN)
(d)+(n-2) -3880 (BIN)
(d)+(n-1)
-4528 (BIN)
K1 K65535
(0001H) (FFFFH)
6.2 Arithmetic Operation Instructions
(n)
(n)
6 BASIC INSTRUCTIONS
6
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