Mitsubishi Electric GOT2000 Series User Manual page 313

■4. GOT restoration procedure
Follow the procedure below starting from 1), and check if the GOT is restored. Mark the corresponding checkbox.
If the GOT is not restored, proceed to the next check item.
No. Check item
1)
Press the GOT reset switch.
2)
Power on/off the GOT.
3) Reset or power on/off the PLC CPU.
Power on/off the GOT and PLC CPU
4)
simultaneously.
5) Connect the cable again.
6) Write the package data again.
7) Install the basic software again.
Take the preventive measures against
8) noise (12.1.2 GOT installation status
check sheet).
9) Replace the unit.
The GOT is not restored even by 1) to
10)
9).
*1 Models other than GT23 are the targets. The GOT reset switch does not operate when the bus connection is used.
*2 Models other than GT23 are the targets. When using the bus connection, do not turn off and then on the GOT while the PLC
power is on.
Make sure to turn off the PLC first, and turn off and then on the GOT.
*3 Models other than GT23 are the targets. Powering off the GOT causes an error in the control station for the MELSECNET/H
connection or in the master station for the CC-Link connection (intelligent device station).
■5. Faulty product investigation
If you cannot restore the GOT, consult your local Mitsubishi Electric System & Service Co., Ltd.
Depending on the problem details, we may ask you to send the faulty product to us.
In that case, attach the GOT status check sheet, GOT installation status check sheet, and system configuration check
sheet filled with details about your system.
Check
□ Restored
*1*3
□ Not restored
□ Restored
*2*3
□ Not restored
□ Restored
□ Not restored
□ Restored
□ Not restored
□ Restored
□ Not restored
□ Restored
□ Not restored
□ Restored
□ Not restored
□ Restored
□ Not restored
□ Restored
□ Not restored
-
Cause/status
If the GOT is restored by the
operation on the left, a temporary
malfunction or others due to noise
is considered.
If the GOT is restored by the
operation on the left, the cable
connection may be faulty.
If the GOT is restored by the
operation on the left, data may
have been destroyed by an action
such as powering off the GOT
during the package data writing or
basic software installation.
A temporary malfunction or others
due to noise is considered.
If the GOT is restored by the
operation on the left, the unit may
has a hardware failure.
-
12.1 GOT Restoration Sheets
Corrective action
Take the corrective action of 12.1.2
GOT installation status check sheet.
Securely connect the cable.
If an error occurs again, proceed to ■5.
Faulty product investigation.
Do not power off the GOT during data
transfer.
If an error occurs again, proceed to ■5.
Faulty product investigation.
Take the action in 12.1.2 GOT
installation status check sheet.
Install the failure unit to the GOT again
to check that the unit causes the
malfunction.
After the check, proceed to ■5. Faulty
product investigation.
Proceed to ■5. Faulty product
investigation.
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