Mitsubishi Electric MELSEC iQ-R Series Safety Function Block Reference page 73

Muting conditions (forward direction)
No. State transition
1 8000H→8011H
8000H→8311H
2 8011H→8012H
8311H→8012H
3 8000H→8012H
4 8012H→8021H
24 8012H→8014H
8012H→8314H
25 8014H→8021H
8314H→8021H
5 8021H→8000H
Condition/action
MS_11 is the first entry switch actuated:
Start timers i_dMaxMutingTime and i_dDiscTime11_12.
i_bMutingEnable=ON AND MS_11=OFF→ON AND MS_12=OFF AND MS_21=OFF AND MS_22=OFF
MS_12 is the first entry switch actuated:
Start timers i_dMaxMutingTime and i_dDiscTime11_12.
i_bMutingEnable=ON AND MS_11=OFF AND MS_12=OFF→ON AND MS_21=OFF AND MS_22=OFF
MS_12 is the second entry switch actuated:
Stop timer i_dDiscTime11_12.
i_bMutingEnable=ON AND MS_11=ON AND MS_12=OFF→ON AND MS_21=OFF AND MS_22=OFF
MS_11 is the second entry switch actuated:
Stop timer i_dDiscTime11_12.
i_bMutingEnable=ON AND MS_11=OFF→ON AND MS_12=ON AND MS_21=OFF AND MS_22=OFF
Both entry switches actuated in the same cycle:
Start timer i_dMaxMutingTime.
i_bMutingEnable=ON AND MS_11=OFF→ON AND MS_12=OFF→ON AND MS_21=OFF AND MS_22=OFF
All switches actuated:
MS_11=ON AND MS_12=ON AND MS_21=ON AND MS_22=ON
MS_21 is the first exit switch actuated:
Start timer i_dDiscTime21_22.
MS_11=ON AND MS_12=ON AND MS_21=OFF→ON AND MS_22=OFF
MS_22 is the first exit switch actuated:
Start timer i_dDiscTime21_22.
MS_11=ON AND MS_12=ON AND MS_21=OFF AND MS_22=OFF→ON
MS_22 is the second exit switch actuated:
Stop timer i_dDiscTime21_22.
MS_11=ON AND MS_12=ON AND MS_21=ON AND MS_22=OFF→ON
MS_21 is the second exit switch actuated:
Stop timer i_dDiscTime21_22.
MS_11=ON AND MS_12=ON AND MS_21=OFF→ON AND MS_22=ON
One of the exit switches released:
Stop timer i_dMaxMutingTime.
MS_11=OFF AND MS_12=OFF AND (MS_21=ON→OFF OR MS_22=ON→OFF)
4 SAFETY FB SPECIFICATIONS
4.11 M+SF_MUTEP_R
4
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