Unication Messenger m90 Manual de usuario Pagina 135

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127
Ladder
Ladder Net
A U90 Ladder net is the smallest division of a ladder diagram in Unitronics' U90 Ladder
software.
Your first ladder element on the left must be connected to the left side of the ladder in each
net. You do not need to connect the last element on the right to the right side of the ladder
in each net.
You should place only one ladder rung on a Ladder net.
Power flows through the ladder elements in a net from left to right. If you build a net that
would result in reverse power flow (right to left) the following error message occurs:
Placing more than one rung in a net may cause compiler problems in your project.
Examples:
This net is constructed properly.
This net is constructed properly.
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