Mitsubishi Electric MELSEC iQ-R Series - Page 1432

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13 SFC PROGRAM INSTRUCTIONS
13.1 SFC Control Instructions
Processing details
• This instruction temporarily stops the step sequence in the specified block.
• If the block pause/restart bit of the SFC information device is set, the corresponding bit device turns on.
• Stop timing of each step after execution of the instruction differs depending on the setting (immediate stop or stop after
transition) of the block stop mode bit of the SFC information device.
• The coil output status by using the OUT instruction at the temporary stop depends on the status of SM325.
Precautions
If the sequence is stopped while SM325 is off, coil HOLD steps become inactive. The sequence cannot be restarted with the
hold status. If the sequence is stopped while SM325 is on, the sequence can be restarted with the hold status.
Operation error
Operation of the PAUSE and RESTART instructions depends on the combination of the SM325 status, block
stop mode bit setting of SFC information device, and step hold status. For details, refer to the following.
 MELSEC iQ-R Programming Manual (Program Design)
Setting of the block stop mode
bit
Stop timing
Immediate stop All the steps become inactive immediately after execution of the instruction.
Stop after transition Steps continue operation even after the execution. After transition condition is satisfied, the operation stops at next
step.
Status of SM325 Coil output status by using the OUT instruction
On The coil output remains the state immediately before stop.
Off The coil output turns off at stop.
Error code
(SD0)
Description
31A1H The specified block does not exist.
The instruction is executed when no SFC program (scan execution type) exists or SM321 is off.
31A2H The specified block No. is out of the range, 0 to 319.