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6-5
Enabling and Disabling Points
Overview
Enabling and disabling points is sometimes necessary when performing maintenance on the
system. When using this function, it is critical that you understand whether custom control (either
the system's default custom control or any user custom control) makes reference to the point or not.
Actions driven by custom control are suspended for the duration of time the point is disabled, but
execute immediately after the point is enabled.
Example:
Suppose you disable a signal point and during the time the point is disabled, a custom
control equation executes that turns the point ON. This action is suspended for the
duration of time the point is disabled. However, when the point is subsequently
enabled, the point's state updates and the custom control equation turning the point
ON executes, turning the signal ON.
Procedure
Follow these steps to enable or disable a point.
1.
Select the point. Refer to Chapter 5 for information on selecting points.
2.
Press either the “Disable” or “Enable” softkey.
The system indicates that the command has been accepted, and generates a "Disable Trouble" to
remind you that the point is disabled. When you enable the point again, the trouble clears.
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