SFC Task Control Instruction Specifications
Appendix B
125
Note:
•
Specify the number displayed to the right of the
SFC program in the workspace for the SFC task
number, as shown below.
As shown below, SFC programs can be created in
interrupt tasks and executed as extra tasks. Refer to
the
SYSMAC CS/CJ Series Programmable
Controllers Programming Manual
(Cat. No. W394)
for information on extra tasks.
When using an extra task, specify the SFC task
number as shown above for the operand data. For
the program shown above for extra task 1 (interrupt
task 1), the SFC task number specification would be
as follows:
SFCON
Interrupt task 01
→
&8001
&8001
•
These instructions cannot be used for the task
in which they are programmed. For example, if
the instruction is in cyclic task 0 (task number
0), a task number of 0 cannot be specified.
•
This instruction cannot be input or displayed on
a Programming Console. “?” will be displayed.
Precautions on Using SFCPR
Do not execute the SFCPR instruction for an SFC
task that has been ended (see note). Even if the
SFCPR instruction is executed for an SFC task that
has been ended, the outputs will be reset and the
task will not be started. If this happens, you can
executed SFCON again to start the task.
Note:
Use the Task Flag to prevent the SFCPR
instruction from being executed for an SFC
task that has been ended. This is not possible,
however, when using an SFC program in an
extra task.
•
If the SCFPR instruction is executed for a step
for which status has changed in the same cycle,
the outputs will be reset. This means that the
final scan and the P0 action in steps that
became inactive will not be executed.
•
If the SCFPR instruction is executed for a step
for which status has changed in the same cycle
and then the SFCON instruction is executed,
the SFC task will be started, but the P and P1
actions in steps that became active will not be
executed.
Precautions on Using SFCPR/SFCPRN
•
The step timers will continue to operate for
steps paused with the SFCPR or SFCPRN
instruction. The displayed time, however, will
not change.
•
Step timers may not operate correctly when the
SFCPR or SFCPRN instruction is used.
Содержание SYSMAC CX-Programmer 8.1
Страница 1: ...Operation Manual SFC Programming SYSMAC WS02 CXPC1 V8 CX Programmer Ver 8 1 Cat No W469 E1 04...
Страница 2: ...ii CX Programmer Ver 8 1 WS02 CXPC1 V8 Operation Manual SFC Programming Revised February 2009...
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Страница 56: ...Precautions When Creating SFC Programs Section 1 5 40...
Страница 117: ...Monitoring Section 4 5 101 For details refer to 3 2 3 Adding an Action to a Step or to the Initial Step...
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Страница 152: ...Revision History 136...
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