Mitsubishi Electric 800 Series, Instruction Manual, Page: 583 / 727

(N) Operation via communication and its settings
582
PARAMETERS
 Pr.343 Communication error count
• The communication error occurrence count can be checked.
NOTE
• The communication error count is temporarily stored in the RAM memory. The value is not stored in EEPROM, and so is
cleared to 0 when power is reset and the inverter is reset.
 Output signal LF "alarm output (communication error warning)"
• During a communication error, the alarm signal (LF signal) is output by open collector output. Assign the terminal to be
used using any of Pr.190 to Pr.196 (Output terminal function selection) .
NOTE
• The LF signal can be assigned to an output terminal by setting Pr.190 to Pr.196 . Changing the terminal assignment may
affect other functions. Set parameters after confirming the function of each terminal.
Parameter Setting range
Minimum
setting range
Initial value
343 (Read only) 1 0
Alarm data
Reply data
Master
Slave
0
Signal LF
Normal data
Alarm data Alarm data
1 2
OFF
ON
OFF OFF
ON
Not increased
Turns off when normal data is received
Alarm data :
Normal data
Reply data
Communication error count is increased in
synchronization with leading edge of LF signal
Data resulting in
communication error.
Communication
error count
(Pr. 343)