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8. Other functions
8.1 Power failure countermeasure
The set data is backed up in the non-volatile IC memory.
If power failure occurs during data logging, the data is automatically saved in the file.
After the power is restored, the data logging stops.
However, if external operation input LOG terminals 19 and 20 are connected (Contact
Closed), data logging is automatically starts after the power is restored and the data
is written in a new file.
If momentary power failure occurs while logging data, one batch of logging data might
be lost.
8.2 Self-diagnosis
The CPU is monitored by a watchdog timer, and when an abnormal status is found on
the CPU, all outputs are turned off and the LMD-100 is switched to warm-up status.
8.3 Error indication while accessing the CF card
PV display
Error contents
Format error (CF card is not inserted)
Format error (CF card cannot be formatted. CF card is defective)
Error when writing to CF card
(Unformatted CF card. CF card format does not coincide with
the LMD format.)
Error when writing to CF card
(CF card is not inserted. Excess CF card memory capacity)
Undefined error
Error when reading from CF card (CF card is not inserted)
Error when reading from CF card
(Non-existent file number or data number)
When errors occurred, data logging is stopped, and the error indication remains
until it is released by the
key.
The error indication cannot be released with Logging Start/Stop by external operation
input.
8.4 Time error indication
PV display
Error contents
Clock lithium battery voltage for backup in a power failure is low.
Logging when current date or time has not been set
(Data logging cannot be started until date and time is set)
When errors occurred, its indication can be released by the
key.
8.5 Error indication during data logging
PV display
Error contents
When errors occur during data logging
When errors occurred, it is required to repair the LMD-100, controllers or communication
line since it may break.
To release errors, turn the power on again, or press the
key.