Mitsubishi Electric MELSEC-Q Series Programming Manual page 102

Program Examples
• When X1 switches ON, the following program executes a forced transition at transition condition 1 of block 1. The forced
transition setting is canceled when X2 switches ON.
When step is designated by operation output of block 1
When step is designated by operation output of other than block 1
When step is designated by sequence program
This instruction checks, from the first sequence step of the specified block in series, whether or not the
specified transition condition number is existed.
Because of this, processing time of the instruction differs depending on the program capacity of the specified
block (number of sequence steps), a maximum of hundred and several tens ms may be taken.
In case of occurring WDT error (error code: 5001), change the WDT setting value with the PLC RAS setting in
the PLC parameter.
4 SFC PROGRAM CONFIGURATION
100
4.4 Controlling SFC Programs by Instructions (SFC Control Instructions)