Mitsubishi Electric MELSEC-Q Series Programming Manual page 142

Functions
• This function reads comments of the transition condition
with the number of comments specified at n2, and stores those to the device number of after specified at (d1).
*1 Transition condition associated with active steps is shown below.
• Serial transition is a transition condition for right under a step.
• Selection branching is a transition condition for all branches. Comment of transition condition is read from left to right in the
SFC diagram.
• Parallel coupling is a transition condition for after parallel coupling. Comments are read only when steps with parallel-
coupled are all activated Step No. described at the most right edge is stored for transit condition to be read.
Serial transition
: Indicates a transition condition associated with steps.
4 SFC PROGRAM CONFIGURATION
140
4.8 SFC Comment Readout Instruction
Selection branching
*1
associated with steps activated in the SFC block specified at n1
Parallel coupling