62-11640 3–14
3.10 DATA RECORDER
The APX control system contains a built-in DataLink
data recorder with 3 megabytes of memory. The
recorded data can be downloaded from the DataLink
data recorder using either the TRU-Tech/TRU-View
program or a Data Transfer USB memory device.
The DataLink data recorder reads the same input infor-
mation as the control system (Functional Parameters,
Configurations, and Unit Data) at all times. The Data-
Link data recorder records events as they occur, such
as setpoint changes and defrost initiation and termina-
tion, and also records all data values including tem-
perature sensors and pressure transducers in either
averaged or snapshot format at selected intervals.
The following intervals are available for sensor record-
ing:
3.10.1 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 Inter
vals, 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
3.10.2 Data Recording
The DataLink data recorder data comes from four gen-
eral categories of information:
a. Control system Information as described in the pre-
ceding Section 3.10.1.
b. Sensor Data
This information is recorded at pre-determined inter-
vals as a snapshot of the sensor at the time of the
recording, or an averaged reading of the sensor read-
ings since the last recording based on 1 minute incre-
ments. The user can determine which sensor(s) will be
recorded, whether snapshot or averaged readings are
preferred and at what time intervals. (Snapshot read-
ings 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 some-
thing 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 is 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
program.
3.10.3 Data Downloading
The data within the DataLink data recorder can be
downloaded using either the TRU-Tech/TRU-View pro-
gram with a PC–USB service cable connected to the
USB interface port or with a Data Transfer USB mem-
ory device (refer to Section 5.3.3).
3.10.4 DataLink Data Recorder Power-Up
The DataLink data recorder records data the entire
time the START/RUN - OFF switch is in the START/
RUN position. A Configuration exists which allows the
user to select whether 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 hours 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.)
1 Minute 30 Minutes
2 Minutes 1 Hour
5 Minutes 2 Hours
10 Minutes 4 Hours
15 Minutes
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