Mitsubishi MELSEC Q Series, Programming Manual

Page: 441 / 816

7.6 Structured Instructions
7.6.1 FOR to NEXT instruction loop
7-101
7
APPLI
C
A
T
IO
N
INSTRUCTIONS
FOR, NEX
T
FOR, NEXT
(4) Up to 16 nesting levels are applicable for the FOR instruction.
O peration Error
In any of the following cases, an operation error occurs, the error flag (SM0) is turned ON, and
the corresponding error code is stored to SD0.
• The FEND or GOEND instruction was executed before the execution of the NEXT
instruction and after the execution of the FOR instruction. (Error code: 4200)
• The NEXT instruction is executed prior to the execution of the FOR instruction.
(Error code: 4201)
• The STOP instruction has been inserted between the FOR and NEXT instructions.
(Error code: 4200)
• The 17th FOR instruction is executed when FOR instructions have been nested.
(Error code: 4202)
FOR i nstruct i ons can b e
neste d up to 16 d eep .
X 0
X 2
X 1
FOR
EN ENO
n 5
FOR
EN ENO
n 3
FOR
EN ENO
n 100
NE X T
EN ENO
NE X T
EN ENO
NE X T
EN ENO