Special Functions
6-7-2.Time Inte
rrupt
Y0
FEND
I4010
INC D0
IRET
X0
M8000
Table of interruption tag:
Interruption tag Disable interruption
struction
Description
in
Function
and Action
ro le too long, if certain special
program should be executed; or should
be executed every certain time, t unction is suitable. It could be not
affected by PLC’s scan cycle, execute the time interrupt program every Nms.
efaulted time inter open. Time interrupt subroutine is
similar with other interru t must be written behind the main
program, start with I40xx IRET.
z There are 10 routes time 9**. (**
e, the unit is ms.)E.g. I4010 means execute the first
route’s interruption every 10ms.
In the condition of the main p gram’s executing cyc
in sequential control scan, a special program
ime interruption f
z The d ruption status is
pt subroutines. I
instruction, end with
interruption, the denote method is: I40**~I4
means time interrupt’s tim
I40**
M8056
I41**
M8057
I42**
M8058
I43**
-
I44**
-
I45**
-
I46**
-
I47**
-
I48**
-
I49**
-
“**” denotes the time of time
interrupt. The bound is 1~99,
unit is “ms”.
21
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