Fnc 08 - For / Start A For/Next Loop - Mitsubishi Electric MELSEC FX3U Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
8.9 FNC 08 – FOR / Start a FOR/NEXT Loop
Outline
FOR instruction specifies the number of repetition of the loop between FOR and NEXT (FNC 09) instructions.
1. Instruction format
FNC 08
FOR
2. Set data
Operand type
S
3. Applicable devices
Bit Devices
Oper-
and System User
Type
X Y M T C S D .b KnX KnY KnM KnS T C D R U \G
S
: This function is supported only in FX
Explanation of function and operation
Related instruction
FOR instruction and NEXT (FNC 09) instruction are set as a pair in programming.
Mnemonic
16-bit Instruction
3 steps FOR
Number of repetition of the loop between FOR and NEXT instructions
[ = K1 to K32767]
S
(A value from −32768 to 0 is handled as "1".)
Digit Specification
/FX
3U
8.9 FNC 08 – FOR / Start a FOR/NEXT Loop
Operation Condition
32-bit Instruction
Continuous
Operation
Description
Word Devices
Special
System User Index
Unit
V Z Modify K H
PLCs.
3UC
→ For details, refer to NEXT (FNC 09) instruction.
8 Program Flow – FNC 00 to FNC 09
Mnemonic Operation Condition
−
Data type
16-bit binary
Others
Con- Real Charac-
stant Number ter String
E " "
1
2
3
4
Pointer
5
P
6
7
8
9
10
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