Mitsubishi Electric MELSEC iQ-R Series User Manual page 130

If an error occurs in the following FB analysis processing at multiple start, the axis status (AxisName.Md.AxisStatus) and the
axes group status (AxesGroupName.Md.GroupStatus) will be error stop and the on-going FBs will stop.
Speed
Execute
FB1
Busy
Active
Error
Execute
Busy
FB2
Active
Error
AxisName.Md.
AxisStatus
AxesGroupName.
Md.GroupStatus
4 START AND STOP
128
4.3 Multiple Start (Buffer Mode)
Instruction stops and stop process starts due to
an error occurrence of buffering FB (FB2)
Multiple start
FB
being executed
7: SynchronizedMotion
1: ErrorStop
5: GroupMoving
1: GroupErrorStop
Buffering FB