Mitsubishi Electric FR-D720S SC EC Instruction Manual page 385

Parameter
To detect the mistakes of message data from the master, they are checked for the following er-
rors. If an error is detected, an alarm stop will not occur.
Error Item
Parity error
Framing error
Overrun error
Message frame error
CRC check error
Tab. 6-78: Error check item
FR-D700 SC EC
Error Definition
The data received by the inverter differs from
the specified parity (Pr. 120 setting).
The data received by the inverter differs from
the specified stop bit length (Pr. 120).
The following data was sent from the master
before the inverter completes data receiving.
The message frame data length is checked,
and the received data length of less than 4
bytes is regarded as an error.
A mismatch found by CRC check between
the message frame data and calculation
result is regarded as an error.
Communication operation and settings
Inverter Side Operation
Pr. 343 is increased by 1 at error
occurrence.
The terminal LF is output at error
occurrence.
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