6 - 6 6 - 6
6 SFC PROGRAM EXECUTION
MELSEC-Q
6.3 Block Temporary Stop and Restart Methods
6.3.1 Block STOP methods
The temporary block STOP methods which can be used during SFC program execution are
described below.
(1) Block STOP methods
The methods for temporarily stopping a block during SFC program operation are shown below.
STOP Method Operation Description Remarks
Block STOP by SFC
control instruction
• Using an SFC control instruction, a specified
block is temporarily stopped from an SFC
program step (operation output), or from
another sequence program.
Condition
PAUSE BLm
m is the block No.
• Convenient for temporarily stopping operation
(at error detection, etc.) in order to correct the
error by manual operation.
The manual operation control program can be
placed at another block which is forcibly
started when the block STOP occurs.
STOP by SFC
information device
• The execution of the specified block is
temporarily stopped by forcibly turning ON
the "block STOP/RESTART bit", which was
set to each block as the SFC information
device, in the program or peripheral device.
•
Convenient for confirming operation by step
control at debugging and test operations,
because block processing can be stopped from
a peripheral device without requiring a program.
To Next Page
Loading...
Need help?
General
