Chapter 5 Instruction Specifications
5-105
Item number
Control instructions-5
Name
Label
Ladder format
Condition code
Processing time (
µ
s)
Remark
R7F4
R7F3
R7F2
R7F1
R7F0
Average Maximum
LBL n
DER
ERR
SD
V
C
z
z
z
z
z
Instruction format
Number of steps
0.5
Condition
Steps
LBL n
1
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 255 (Decimal)
Function
•
This instruction indicates the destination of the jump when the JMP n or CJMP n instruction is executed (n is always used in
pairs).
•
The n in the LBL n cannot be used multiple times in the same program.
•
This instruction itself does not perform any operation.
•
Even if a startup condition is used with LBL n, it will be ignored.
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 LBL
Instruction for use
R100
(00001)
(00002)
(00003)
JMP 0
WR0000 = WR0000 + 1
LBL 0
R100
(00004)
(00005)
(00006)
WR0000 = WR0000 - 1
LBL 1
JMP 1
•
When R100 is on, JMP 0 will be executed but JMP 1 will not be executed.
Therefore, the content of WR0000 will decrement by one during each scan.
•
When R100 is off, JMP 0 will not be executed but JMP 1 will be executed.
Therefore, the content of WR0000 will increment by one during each scan.
LB
L n
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 ...