Mitsubishi Electric FR-E700 Series Instruction Manual page 419

Parameter
Communication error count (Pr. 343)
You can check the cumulative number of communication errors.
Tab. 6-104: Number of communication errors
NOTE
The number of communication errors is temporarily stored into the RAM. As it is not stored into
the E²PROM, performing a power supply reset or inverter reset clears the value to 0.
Output terminal LF "alarm output (communication error warnings)"
During a communication error, the alarm signal (LF signal) is output by open collector output. Assign
the used terminal using any of Pr. 190 to Pr. 192 "Output terminal function selection".
Communication
Fig. 6-131: Output of the LF signal
NOTE The LF signal can be assigned to the output terminal using any of Pr. 190 to Pr. 192. Changing the
terminal assignment may affect the other functions. Make setting after confirming the function of
each terminal.
FR-E700SC EC
Parameters Setting Range
343
Master
Alarm data Alarm data
Slave
Error count
(Pr. 343)
Signal LF
OFF
Communication error count is increased in
synchronization with leading edge of LF signal
Minimum Setting Range
(Read only)
Normal data
Reply data
ON
Turns off when normal data is received
Communication operation and setting
Initial Value
1
Alarm data Normal data
OFF ON
Alarm data:Data resulting in
communication error.
0
Reply data
OFF
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