10 TROUBLESHOOTING

MELSEC-Q

Error code

Error

 

 

Signal

 

 

(Hexa-

 

Error Contents

Corrective action

Reference section

 

name

decimal)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Recheck the user frame number.

 

 

 

There is an error in the designation of the user frame

 

• Designate the registered user frame

Section 3.4.3

 

 

 

number.

Section 3.4.4

 

 

number.

 

 

 

 

 

 

• Register the designated data for

Section 3.4.5

 

 

 

 

 

 

 

 

 

 

initialization.

 

 

 

 

 

 

• Designate the output head pointer in

 

7FE1H

 

 

 

 

the range of 1 to 100.

 

 

 

 

 

 

• Designate the position (n-th position)

 

 

 

There is an error in the designation of the output head

 

where the data for initialization number

 

 

 

pointer.

 

 

is designated.

 

 

 

 

 

 

• Designate the data for initialization

Section 3.4.5

 

 

 

 

 

number at the designated position

 

 

 

 

 

 

 

 

 

 

 

(n-th position).

 

 

 

 

 

 

Designate a registered data for

 

7FE2H

Modern

There is an error in the designation of the output frame

 

initialization number within the range of

 

number.

 

CHn

the designated number of outputs from

 

 

function

 

 

 

 

 

ERR.

the location of the output head pointer.

 

 

error

 

 

 

 

 

 

 

• Designate the data for initialization in

 

 

 

 

 

 

 

7FE3H

 

There is an error in the designation of the number of

 

the range of 1 to 78.

Section 3.4.3

 

registered data bytes.

 

• Designate 80 for the data for

Section 3.4.4

 

 

 

 

 

 

 

 

connection.

 

7FE4H

 

There is an error in the data for connection.

 

• Recheck the message length of the

Section 3.4.4

 

 

message for notification.

 

 

 

 

 

 

7FE5H

 

There is an error in the designation of the no-

 

• Designate the no-communication

Section 3.3.6

 

communication interval time.

 

interval time in the range of 0 to 120.

 

 

 

 

 

 

 

 

 

• Clear the storage area of the

 

7FE8H

 

The number of remote password mismatch exceeded

 

Accumulated count of unlock process

Section 3.3.3

 

the value designated at the address 200DH.

 

abnormal completion (address: 22FCH)

 

 

 

 

 

 

 

 

 

to 0.

 

 

 

Callback denial exceeded the value designated at the

 

• Clear the storage area of the callback

 

7FE9H

 

 

denial accumulated count (address:

Section 3.3.4

 

address 2002H

 

 

 

 

 

 

22F1H) to 0.

 

 

 

 

 

 

 

1 Take corrective action in the following procedure.

1)Check whether the Q series C24, power supply module and CPU module are mounted correctly on the base unit.

2)Check whether the operating environment of the Q series C24 is within the general specifications range of the CPU module.

3)Check whether the power supply capacity is sufficient or not.

4)Check whether the hardware of the Q series C24, CPU module and base unit are normal according to the manuals of the corresponding modules.

If any module is faulty, please contact your local Mitsubishi service center or representative for repair.

5)If the problem cannot be solved through the above steps, please consult your local Mitsubishi service center or representative, explaining a detailed description of the problem.

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