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3.4.25 Operation at a communication error (Pr. 500 to Pr. 502)
Operation at a communication error in the CC-Link communication can be selected.
Parameter
Name
Number
Communication error
500
execution waiting time
Communication error
501
occurrence count display
Stop mode selection at
502
communication error
Parameters which can be set when the plug-in option (FR-A7NC) is mounted.
(1)
Waiting time for the communication line error output after a communication error (Pr. 500)
Waiting time for the communication error output after a communication line error occurrence can be set.
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.
Communication line status
Communication error
Alarm signal(LF)
(2)
Displaying and clearing the communication error count (Pr. 501)
The cumulative count of communication error occurrences can be displayed. Write "0" to clear this cumulative count.
When a communication line error occurs, the setting of Pr. 501Communication error occurrence count display increases by one.
Count timing depending on
communication line status
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 converter reset is performed, Pr. 501 setting will be the one that is last stored to
EEPROM depending on the reset timing.
Initial value
0s
0
0
Normal
Error
(E.OP3)
Pr. 500
setting time
(Pr. 502 = 3)
Normal
Description of parameters
Setting
range
Set the waiting time for the communication error output
0 to 999.8s
after a communication line error occurrence.
Displays the cumulative count of communication error
0
occurrences.
Write "0" to clear this cumulative count.
Set the converter's operation at a communication line
0, 3
error or an option unit fault.
Normal
Error
Pr. 500
setting time
Error
Normal
Incremented by 1
Description
Recognition
ON
Error
Incremented by 1
3
115
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