A local signal is a user-defined signal that does not originate from a device panel or an I/O channel. You create a local signal within any other kind of panel. For example, in an instrumentation electrical interface cabinet, a local signal starts at a terminal relay or in a junction box, it starts at a terminal strip. Note that you can apply tag signals (level and sequence) to wires when no device panel is connected. You can use local signals as follows:
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You can create a local tag signal by assigning a local signal to a wiring tag that does not yet have a signal of its own.
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You can create a general signal and link it to the signals that are wired into the terminal strip.
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In the Connection window, select Actions > Local Signal
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On the Terminal Connection dialog, select Signal.
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On the Local Signal dialog, select a wiring tag that has not been associated with a signal (that is, a tag that has no signal name next to it.)
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Select Create.
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Select Close to create and propagate the new local tag signal.
You can also create a local signal by opening the Connection dialog and dragging the instrument tag directly onto the connected wire. Dragging
the tag onto a cable or cable-set will propagate the signal to all the wires of the
cable or cable-set.
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All propagation rules apply to local tag signals.
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For cross wiring with independent wiring from the local terminal strip and I/O card ends, create local tag signals before assigning I/O channels.
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You can apply tag signals (level and sequence) to wires when no device panel is connected.