Publication 1752-UM001A-EN-P - October 2006
196 Function Blocks Command Reference
Override Sequence
The override sequence in this example is described below.
1. The Output Enable signal is off.
2. When the override inputs turn on, the override function starts
and the overriding signal turns on. As long as the override
inputs are on, the muting status is forcibly enabled, and both the
muting and Output Enable signals are on.
3. When the workpiece moves to the right until it is no longer
detected by the sensor (sensor 12 in this case), the muting status
forced by the override function is cleared, and both the muting
and Output Enable signals turn off.
Override Start Conditions
If the following conditions are met, the override function starts and
the Output Enable, muting, and overriding signals turn on.
1. At least one muting sensor is on.
2. The light curtain is inactive (obstructed).
3. The Output Enable is off.
4. The override input signal is on (when set as a single input) or
active (when set as dual inputs).
Override Stop Conditions
If any one of the following conditions is met, the override function
stops and the muting and overriding signals turn off.
1. The muting signals are all off.
2. The maximum override time has elapsed.
3. The Override Input signal is off (when set as a single input) or
inactive (when set as dual inputs).
When the override function has stopped, the Output Enable turns off
if the light curtain is obstructed.
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