Mitsubishi Electric FR-F800 Series Instruction Manual page 688

 Waiting time for the communication line error output after a
communication error
Waiting time for the communication error output after a communication line error occurrence can be set.
Pr.
500
• When a communication line error occurs and lasts longer than the time set in Pr.500, it is recognized as a communication
error.
• If the communication returns to normal within the time, it is not recognized as a communication error, and the operation
continues.
NOTE
• The communication option error (E. 1) is not included in the targets of Pr.500.
• Operations at communication error occurrences can be selected with Pr.502 Stop mode selection at communication error.
(Refer to
 Displaying and clearing the communication error count
The cumulative count of communication error occurrences can be displayed. Write "0" to clear this cumulative count.
Pr.
501
• When a communication line error occurs, the setting of Pr.501 Communication error occurrence count display
increases by one.
• The cumulative count of communication error occurrences is counted from 0 to 65535. When the count exceeds 65535,
the displayed value is cleared and the counting starts over from 0 again.
NOTE
• Communication error count is temporarily stored in the RAM memory. The error count is stored in EEPROM only once per
hour. If power reset or inverter reset is performed, Pr.501 setting will be the one that is last stored to EEPROM depending on
the reset timing.
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Name
Communication error
execution waiting time
Normal
Communication line status
Communication error
(E.OP1)
Alarm signal(LF)
(Pr.502 = 3)
page 501.)
Name
Communication error
occurrence count display
Count timing depending on
communication line status
search engine
Setting range
0 to 999.8 s
Error Normal
Pr.500
setting time
Setting range
0
Normal Error Normal
Incremented by 1
9.6 For customers using communication options manufactured by HMS
Minimum setting
increments
0.1s 0 s
Error
Recognition
Pr.500
setting time
ON
Minimum setting
increments
1 0
Error
Incremented by 1
1
2
Initial value
3
4
5
6
7
8
9
Initial value
10
687
9. APPENDIX