4-3-2 Selective Branch and Merge
S10
S20 S30 S40 S50 S60 S70 S80 S90
S21 S31
S32
S41 S51 S61 S71 S81 S91
S42 S52 S62 S72 S82 S92S22
0
S11
S10
S20 S30 S40 S50 S60 S70 S80 S90
S21
S31
S32
S41 S51 S61 S71 S81 S91
S42 S52 S62 S72 S82 S92S22
S11
7
6
5
4
3
2
1
97
Selective Branch : Select one of the branch ows to transfer the effective state.
Selective Merge : Merge a number of branch ows into a single ow.
The number of available branch ows is 2~8. (no more then 8)
When the step relay S10 is effective, its following eight transfer conditions are simultaneously used for to select and
move the effective state to either one of the S20, S30, S40, S50, S60, S70, S80 or S90.
Assume the S10 is effective and the transfer condition “0” is just turning ON, the activation will be transferred from the
S10 to the S20, then moved to the S21 after that to the S22. At this time, the transfer condition under the S22 turns ON,
the activation will move to the S11. Suppose the S10 is effective and the transfer condition “1” is ON, the activation will
be transferred from the S10 to the S30, and so on.
The entry transfer conditions of every Selective Branch must be particular and unique, that should avoid more than one
transfer condition is effective at the same time. If not, will lead to more than one ows executing at the same time and
result in errors.
4-3-3 Simultaneously Parallel Branch and Merge
Simultaneously Parallel Branch : When the foremost transfer condition is authorized, all the rst steps of branch ows
become effective.
Simultaneously Parallel Merge : When all the last steps of branch ows are effective and the merge transfer condition is
authorized, the branches are combined to a single ow.
The number of available branch ows is 2~8. (no more then 8)
When the step relay S10 is effective and its transfer condition is NO, the following S20, S30, S40, S50, S60, S70, S80
and S90 become active simultaneously. Each ow can do its own process and transfer. After a while, the S22, S32,
S42, S52, S62, S72, S82 and S92 are effective and waiting the transfer condition of merging. If all the requirements
above are authorized, the effective state will move to the S11.
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