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3.9.1 Control System Information
The control system information that may be recorded is as follows:
• DataLink data recorder time clock date / time
• Setpoint
• DataLink data recorder settings
(Logging Intervals, Events and Sensors)
• Trailer (asset or car) ID
• Unit Serial Number
• Unit Model Number
• Controller (main microprocessor) Serial Number
• Controller (main microprocessor) Software Rev
• Pretrip Start/End
• Functional Parameters
• Control System Configurations
• Current System Operating Mode
3.9.2 Data Recording
The DataLink data recorder data comes from four general categories of information:
a. Control system Information as described in the preceding Section 3.9.1.
b. Sensor Data
This information is recorded at pre-determined intervals as a snapshot of the sensor at the time of the recording, or
an averaged reading of the sensor readings since the last recording based on 1 minute increments. The user can
determine which sensor(s) will be recorded, whether snapshot or averaged readings are preferred and at what time
intervals. (Snapshot readings are also taken at the beginning and end of defrost and at the time of a shutdown
alarm.)
All of the sensors and transducers that may be read under Unit Data (refer to Table 3–1) may be included or
excluded from the recordings.
c. Event Occurrences
This information is any additional data that is recorded on a “when it occurs” basis. Events are recorded by the
recorder as they occur. An Event is defined as something that happens and may include:
• Setpoint change
• Defrost cycle start/Defrost Cycle End
• START/RUN − OFF switch on (START/RUN
position)
• Pretrip start
• Pretrip end
• Unit Mode
• Control Mode
• Door and Remote switch activations.
• Hour Meter readings (Hour meters are recorded
at midnight or the first time of day the START/
RUN− OFF switch is toggled from the OFF posi-
tion. There will be no hour meter readings when
the switch in the OFF position.
d. User Area Data
The User or service technician may enter a Comment into the DataLink data recorder using the TRU-Tech pro-
gram.
3.9.3 Data Downloading
The data within the DataLink data recorder can be downloaded using either the TRU-Tech/TRU-View program with
a PC–USB service cable connected to the USB interface port or with a Data Transfer USB memory device (refer to
Section 5.3.1).
3.9.4 DataLink Data Recorder Power-Up
The DataLink data recorder records data the entire time the START/RUN - OFF switch is in the START/RUN posi-
tion. A Configuration exists which allows the user to select weather an additional 8 hours of sensor data be
recorded after the switch is placed in the OFF position, or to stop recording at the same time the switch is placed in
the OFF position. The factory setting is to record the additional 8 hour so the temperatures will be recorded during
the unloading, fueling or other times when it may be necessary to turn the unit off. (Refer to Section 5.2.3.)
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