Mitsubishi Electric MELSEC FX3U Programming Manual page 293

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
Related devices
1. Relationship between flag operation and numeric value
Device
M8304*1
*1. Available in all FX
Cautions
1. Devices specified in
• In a 32-bit operation (by DMUL or DMULP), Z cannot be specified in
2. When monitoring the operation result in a programming tool
Even if word devices are used, the operation result (64 bits) cannot be monitored at one time.
In such a case, floating point operation is recommended.
Program examples
1. 16-bit operation
X000
FNC 22
MUL
2. 32-bit operation
X001
FNC 22
DMUL
Function Changes According to Versions
Compatible Versions
FX
3G
Ver. 1.00 or later Ver. 2.30 or later
Name
ON: When the operation result is 0.
Zero
OFF: When the operation result is a number other than 0.
PLCs and FX /FX
3G 3U 3UC
D
S1 S2 D
D 0 D 2 D 4
S1 S2 D
D 0 D 2 D 4
FX FX
3U 3UC
Ver. 2.30 or later
10 Arithmetic and Logical Operation (+, −, ×, ÷) – FNC 20 to FNC 29
10.3 FNC 22 – MUL / Multiplication
Description
PLCs Ver. 2.30 or later.
D
→ For the floating point operation, refer to Chapter 18.
(D 0) × (D 2) → (D 5,D 4)
8 9 72
(D 1,D 0) × (D 3,D 2) → (D 7,D 6,D 5,D 4)
1756 327
Item Function Summary
Turns the special device M8304 ON when the
Zero Flag
operation result of MUL command is 0.
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