Mitsubishi Electric FR-E5NP Instruction Manual page 27

INVERTER SETTING
2) Pr. 501 "communication error occurrence count display"
The cumulative number of communication error occurrences can be indicated. Write 0 to erase this
cumulative count.
Parameter Number
501
Count timing depending on
communication line status
At the point of communication line fault occurrence, Pr. 501 "communication error occurrence count
display" is incremented by 1.
CAUTION
The communication error occurrence count is stored into RAM temporarily. Since this data is
2
stored in E PROM at one-hour intervals, performing power-on reset or inverter reset may cause
the Pr. 501 data to be the value stored in E
Setting Range Minimum Setting Increments
0
Normal Abnormal
Incremented by 1
2
PROM the last time depending on the reset timing.
20
1
Normal Abnormal
Incremented by 1
Factory Setting
0