Mitsubishi Electric MELSEC-Q Series Programming Manual page 82

Function
• Checks whether or not the specified transition condition of the specified block is specified for forced transition by the forced
transition EXECUTE instruction (sBLm\TRn).
• The contact status changes as described below depending on whether the specified transition condition is specified for a
forced transition or not.
When specified for forced transition
When not specified for forced transition
• Specify the transition as described below.
Item
In the case of SFC program
In the case of sequence program
• If the transition condition in question does not exist in the SFC program, it will remain OFF.
Program Examples
• The following program turns ON Y20 when transition condition 5 of block 3 is specified for a forced transition.
When step is designated by operation output of block 3
When step is designated by operation output of other than block 3
When step is designated by sequence program
4 SFC PROGRAM CONFIGURATION
80
4.4 Controlling SFC Programs by Instructions (SFC Control Instructions)
Contact of N/O Contact Instruction
ON
OFF
Description
Use "Sn" when specifying the step in the current block.
Use "BLm\Sn" when specifying the step in another block in the SFC program.
Use "BLm\Sn" when executing the step activation check instruction.
When the block number is not specified, specify the block number with the BRSET instruction.
Contact of N/C Contact Instruction
OFF
ON