Mitsubishi Electric MELSEC-Q/L - Page 231

6 BASIC INSTRUCTIONS
6.2 Arithmetic Operation Instructions
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• Divides BIN 16-bit data designated by (S1) and BIN 16-bit data designated by (S2), and stores the result in the device
designated by (D).
• If a word device has been used, the result of the division operation is stored as 32 bits, and both the quotient and remainder
are stored; if a bit device has been used, 16 bits are used and only the quotient is stored.
• Values for (S1) and (S2) can be specified between the range of -32768 and 32767 (BIN 16 bits).
• Judgment whether values for (S1), (S2), (D) and (D)+1 are positive or negative is made on the basis of the most significant
bit (b15). (Sign is attached to both the quotient and remainder.)
Operation error
• In any of the following cases, an operation error occurs, the error flag (SM0) turns ON, and an error code is stored into SD0.
Program example
• The following program multiplies "5678" by "1234" in BIN and stores the result at D3 and D4 when X5 turns ON.
• The following program multiplies BIN data at X8 to XF by BIN data at X10 to X1B, and outputs the result of the multiplication
to Y30 to Y3F.
• The following program divides, when X3 is turned ON, the data at X8 to XF by 3.14 and outputs the operation result at Y30
to Y3F.
• Quotient  Stored at the lower 16 bits.
• Remainder  Stored at the upper 16 bits (Stored only when using a word device).
•0  Positive
•1  Negative
Error
code
Error details Q00J/
Q00/
Q01
QnH QnPH QnPRH QnU LCPU
4100 The divisor is 0. 
[Ladder Mode] [List Mode]
[Ladder Mode] [List Mode]
[Ladder Mode] [List Mode]
b0
5678 (BIN) 1234 (BIN)
b15
4 (BIN)
Quotient
b15 b0
742 (BIN)
Remainder
b15 b0
S1
S2
D
D
b0
b15
1
Step
Instruction
Device
Step
Instruction
Device
Step
Instruction
Device