Knowledge Base / Rockwell In-chassis / ControlLogix / MVI56 Series

What is the purpose of the last 4 branches of Rung 1 of Start/Power Up?

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These branches have no purpose in normal operation. However, if it is necessary to write a string longer than 200 characters write-wait logic will have to be added to the ladder. In that case the 4 branches would be involved.

As there is no write-wait logic in our sample ladder there is no observable use for the branches.