10 TROUBLESHOOTING

10.2.3 Error code list while modem function is used

MELSEC-Q

The following describes the error codes, contents and corrective actions for errors (including errors at the abnormal completion) that may occur while the Q series C24 modem function is used.

The error codes for the modem function are stored in the modem function error code storage area (address : 221H(545)) of the buffer memory.

The reference pages listed in the table below are found in the User's Manual (Application).

Error code

Error

 

Signal

 

 

(Hexa-

Error Contents

Corrective action

Reference section

name

decimal)

 

 

 

 

 

 

 

 

 

7FD0H

 

There is an error in the designation of the notification

 

Set 0 to 1 to the notification execution

 

 

execution.

 

designation.

 

 

 

 

 

7FD1H

 

There is an error in the designation of the number of

 

Set the number of connection retries in

 

 

connection retries.

 

the range of 1 to 5.

 

 

 

 

 

7FD2H

 

There is an error in the designation of the connection

 

Set the connection retry interval in the

Section 3.3.6

 

retry interval.

 

range of 90 to 300 (s).

 

 

 

 

7FD3H

Modern

There is an error in the initialization/connection time-

CHn

Set the initialization/connection time- out

 

function

out designation.

in the range of 1 to 60 (s).

 

 

ERR.

 

7FD4H

error

There is an error in the designation of the number of

Set the number of initialization retries in

 

 

initialization retries.

 

the range of 1 to 5.

 

 

 

 

 

7FD5H

 

There is an error in the designation of the data

 

Designate the registered data number for

Section 3.3.6

 

number for initialization.

 

initialization, or 0.

Section 3.4.5

 

 

 

7FD6H

 

There is an error in the data for connection designated

 

Recheck the pager receiver designation.

 

 

 

 

Recheck the dialing number of the

Section 3.4.4

7FD7H

 

by the data number for connection.

 

 

 

external line.

 

 

 

 

 

 

7FD8H

System error

The OS of the Q series C24 detected some error.

( 1)

 

 

 

 

After the modem has been initialized,

 

7FD9H

 

External destination is connected to network or

 

connect to the network if the external

Section 3.4.6

 

modem has not been initialized.

 

destination is not connected to the

Section 3.4.7

 

 

 

 

 

 

 

network or report it.

 

7FDAH

 

There is an error in the designation of the data number

 

Designate a registered number for the

Section 3.3.6

 

for connection.

 

data for connection.

Section 3.4.6

 

 

 

7FDBH

 

There is an error in the designation of the GX

 

Set 0 to 1 to the GX Developer

Section 3.3.6

 

Developer connection.

 

connection designation.

 

 

 

 

 

 

There is an error in the data for connection designated

 

Recheck the waiting time for the

 

7FDCH

 

 

notification-message part of the message

Section 3.4.4

 

by the data number for connection.

 

 

 

 

transmission.

 

 

 

 

 

 

 

 

 

CHn

• Recheck the telephone number in the

 

 

 

 

data for connection.

 

 

Modern

 

ERR.

• Check if the destination is ready for a

Section 3.3.6

7FDDH

function

A connection time-out error occurred.

 

connection.

Section 3.4.3

 

error

 

 

• Recheck the set value of the

Section 3.4.4

 

 

 

 

connection time-out.

 

 

 

 

 

• Recheck the initialization command.

 

 

 

 

 

• Check if there is any problem with the

 

 

 

 

 

modem/TA by seeing the operation

 

 

 

 

 

manual of the modem/TA.

 

7FDEH

 

Connection to the modem/TA was unsuccessful, or

 

• Connect the modem/TA to the Q series

—

 

the modem/TA is not connected.

 

C24.

 

 

 

 

 

 

 

 

• Check the connection cable by seeing

 

 

 

 

 

the operation manual of the

 

 

 

 

 

modem/TA.

 

7FDFH

 

Modem connection channel number is not designated.

 

Set 1 to 2 to the modem connection

 

 

 

Designated value of modem connection channel is

Section 3.3.6

7FE0H

 

channel designation.

 

incorrect.

 

 

 

 

 

 

 

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