ERROR 139: Communication error

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Error handlingET/MT-3x6, ET/MT-2x8 series error messagesError Messages of Individual DriversMitsubishi FX CPUERROR 139: Communication error

 

The part supplementary data of the Communication error message is like this:

 

-<direction>

 

The label's meaning is following:

ERROR 139: Communication error

Label

Meaning

A

The first character received from the slave as a response on the request telegram sent by the master is not valid (STX, NAK, ACK, <)

B

The NAK response was received for TrMAXTLGCYCLE times

C

The response telegram was not received completely

D

The response telegram was not received completely

E

One or more characters of the received response telegram body do not express hexadecimal number

F

The ETX character of the received response telegram is missing

 

 

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