Elements of SFC
Section 2-3
47
Step Control Instructions
Step control instructions (SA, SE, TSR, TSW) can be used to control SFC steps.
SA: Activate step (Switches a step to the activate status)
SE: Deactivate step (Switches a step to the inactivate status)
TSR: Read step timer value instruction (Reads the present value of the step timer)
TSW: Set step timer value instruction (Updates the present value of the step timer)
In each of the instructions, the step flag is specified as follows:
•
For within the same task
[step name].X
For within another task
[program name].[step name].X
In each of the instructions, the step timer is specified as follows:
•
For a step within the same task
[step name].T
•
For a step within another task
[program name].[step name].T
•
For a subchart step within the same task
[subchart name].[step name].T
•
For a subchart step within another task
[program name].[subchart name].[step
name].T
For details on step flags, refer to the following description under
Flags Used to Monitor
a Step’s Active Status.
Step activation/deactivation instructions
can be used for the following
purposes.
Controlling a Step in an SFC Program from an External Ladder Program
SA
Ladder Program
SFC Program
Activate
SE
Deactivate
Содержание SYSMAC CX-Programmer 8.1
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Страница 2: ...ii CX Programmer Ver 8 1 WS02 CXPC1 V8 Operation Manual SFC Programming Revised February 2009...
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