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2.4 Using the USB Host Feature (J7)
The EMM connect is equipped with a USB Host port located
at J7 on the control board which allows for the connection
of a USB flash drive. The USB flash drive can be used for
data logging, event history, and installing software updates.
1.
USB Data Logging
When a USB flash drive is installed in the controller it will begin
to automatically record key dryer operating parameters:
timestamp, dryer status, service timer, total compressor run
timer, discharge temperature, evaporator inlet temperature,
evaporator outlet temperature, and dryer % load.
These values will be written every 10 seconds to a comma
separated value file stored in the root folder of the USB
flash drive. Each day a new comma separated value file will
be created for storing the samples for that day. Comma
separated value files older than 60 days will be automatically
deleted.
2.
USB Event History
When a USB flash drive is installed in the controller it will
begin to automatically log all dryer events: power loss,
power recovery, alarms, state (standby/running), and mode
(manual/scheduled/remote).
Events are timestamped and recorded in the EVENT.TXT file
stored in the root folder of the USB flash drive.
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