Chapter 5 Instruction Specifications
5-106
Item number
Control instructions-6
Name
FOR
Ladder format
Condition code
Processing time (
µ
s)
Remark
R7F4
R7F3
R7F2
R7F1
R7F0
Average Maximum
FOR n (s)
DER
ERR
SD
V
C
z
1]
z
z
z
Instruction format
Number of steps
33
Condition
Steps
FOR n (s)
3
Bit
Word
Double word
Usable I/O
X
Y
R,
M
TD, SS,
CU, CT
WX WY
WR,
WM TC DX DY
DR,
DM
C
o
nstant
Other
n
Code number
{
0 to 49 (Decimal)
s
Number of times repeated
{
{
Function
•
Jumps from the NEXT n of the same code number to this instruction.
•
If the number of times repeated (s) is greater than 0, the instruction following the FOR n (s) is executed.
•
If the number of times repeated (s) is equal to 0, it jumps to the instruction following the NEXT n.
•
Use FOR n (s) and NEXT n in pairs. Also, place the NEXT n after FOR n.
•
The FOR n (s) may not be used more than once.
•
Use the FOR n (s) and NEXT n in the same program area. (It is not allowed to include FOR n (s) in the normal scan and
NEXT n in the subroutine area.)
•
The FOR n (s) to NEXT n nesting can be made up to five levels.
Notes
•
This instruction is checked prior to execution, and when there is an error, the following error code is set in the special
internal output WRF001. Also, the CPU error code '34' is set to special internal output WRF000.
CPU error code
Special internal output
Error code
Error description
34
WRF001
H0001
Duplicate definition of FOR
•
If an error is generated during the execution of the instruction, an error code will be set in the special internal outputs R7F3
and WRF015, and the following program will be executed.
Special internal output
Error code
Error description
H0017
NEXT undefined
H0043
FOR to NEXT error
R7F3=1
WRF015
H0044
Area error for NEXT
H0045
FOR to NEXT nesting error
H0046
FOR nesting overflow
Instruction for use
•
For the instruction instruction, see NEXT n.
FOR
n (
s)
Summary of Contents for HIDIC MICRO-EH
Page 1: ...HITACHI PROGRAMMABLE CONTROLLER APPLICATION MANUAL NJI 350B X ...
Page 12: ...MEMO ...
Page 14: ...Chapter 1 Features 1 2 MEMO ...
Page 50: ...Chapter 4 Product lineup and wiring 4 18 MEMO ...
Page 196: ...Chapter 5 Instruction Specifications 5 146 ...
Page 263: ...Chapter 11 Communication Specifications 11 10 MEMO ...
