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Appendices
App-8
PL-5900 Series User Manual
Types of Processing (all units)
The PL provides system condition information via the following methods.
LED Indicator (3-state display – 1 point)
In addition to indicating if the unit’s power is ON or OFF, the 3-state LED indica-
tor (power lamp) provides the following system condition information.
Color
System Condition
Output Created
Green
Normal Operation (Power ON)
None
Orange
T ouch Panel alarm
None
Flashing
Orange/Red
Backlight Alarm
T OOL settings are enabled.