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This window displays information regarding the update times for a PLI system when the heater is off for the selected circuit.
Fig. 3.25 Status | PLI window
The Next PLI Update displays the number of seconds until the next poll.
When the timer reaches zero, the UIT3 will turn the circuit on for a specified amount of time based on the sensor address and update
the temperature. At this point, the circuit will either remain on or turn off again based on the new temperature.
Relay state field shows the current relay state.
The timer will stay at zero while it's updating. If the circuit is on because the temperature is below the setpoint, the
timer will remain at zero until the circuit turns off.
The value on the screen may not update every second while on this window.
The PLI Test utility allows you to test the communication between the UIT3 and the PLI module. Youcan use this to test and diagnose
any issues you may be having receiving temperatures from theSES/SPC and TT temperature sensors.
This utility only tests communications between the UIT3 and the PLI module. The purpose of this test is to force the
SES/SPC/TT temperature sensors to report temperatures to the PLIin a timely manner. The UIT3 does not directly communicate to
the temperature sensors
The PLI Test utility can be launched from the Status|PLI screen. The circuit that is being viewed must have a PLI RTD assigned to it for
this screen to appear. Tapping on the Start PLI Cycle Test button on this screen will launch the tester.
Fig. 3.26 The PLI Test Utility (Shown using PLI-TT)
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