Mitsubishi Electric MELSEC iQ-R Series User Manual page 488

Error code Error
(hexadecima
l)
7FCFH System error
7FD1H Modem function
error
7FD2H Modem function
error
7FD3H Modem function
error
7FD4H Modem function
error
7FD5H Modem function
error
7FD6H Modern function
error
7FD7H Modem function
error
7FD8H System error
7FD9H Modern function
error
7FDAH Modem function
error
7FDBH System error
7FDCH Modern function
error
7FDDH Modem function
error
27 TROUBLESHOOTING
486
27.4 Error Code List
Description Signal
name

• The operating system of
C24 detected some error.
• The connection re-try CHn
count designation is ERR.
incorrect.
• The connection retry CHn
interval designation is ERR.
incorrect.
• The initialization/ CHn
connection timeout ERR.
designation is incorrect.
• The number of CHn
initialization retries ERR.
designation is incorrect.
• The data No. for CHn
initialization designation is ERR.
incorrect.
• The data for connection of CHn
the number specified in ERR.
the data No. for
connection designation is
incorrect.
• The data for connection of CHn
the number specified in ERR.
the data No. for
connection designation is
incorrect.

• The operating system of
C24 detected some error.
• The line is connected to CHn
the target, or the modem ERR.
has not been initialized.
• The data No. for CHn
connection designation is ERR.
incorrect.

• The operating system of
C24 detected some error.
• The data for connection of CHn
the number specified in ERR.
the data No. for
connection designation is
incorrect.
• The connection timeout CHn
error occurred. ERR.
Corrective action
Page 490 Corrective actions
for system error
• Set the connection re-try
count to 1 to 5.
• Set the connection retry
interval to 90 to 300
(seconds).
• Set the time for the
initialization/connection
timeout to 1 to 60 (seconds).
• Set the number of initialization
retires to 1 to 5.
• Designate the registered
number of data for
initialization or '0'.
• Review the line type.
• Review the external line
outgoing number.
Page 490 Corrective actions
for system error
• Upon the completion of the
modem initialization, connect
the line to the target device
(via public line) while the line
has not been connected yet.
• Designate the registered
number of data for connection.
Page 490 Corrective actions
for system error
• Review the data for
connection.
• Review the telephone number
in the data for connection.
• Check whether the connection
target is connectable.
• Review the setting value for
the connection timeout.
• Review the data for
initialization.
Protocol
MC Nonpr Bidire Prede
ocedu ctiona fined
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