Mitsubishi Electric GOT2000 Series User Manual page 185

■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. * 1*3
2) Power on/off the GOT. * 2*3
Reset or power on/off the PLC
3)
CPU.
Power on/off the GOT and PLC
4)
CPU simultaneously.
5) Connect the cable again.
6) Write the package data again.
7) Install the basic software again.
Take the preventive measures
8) against noise (10.1.2 GOT
installation status check sheet).
9) Replace the unit.
The GOT is not restored even by
10)
1) to 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 Cause/status
□ Restored
□ Not restored
If the GOT is restored by the
□ Restored
operation on the left, a
□ Not restored
temporary malfunction or
□ Restored
others due to noise is
□ Not restored
considered.
□ Restored
□ Not restored
If the GOT is restored by the
□ Restored operation on the left, the
□ Not restored cable connection may be
faulty.
□ Restored If the GOT is restored by the
□ Not restored operation on the left, data
may have been destroyed by
an action such as powering
□ Restored
off the GOT during the
□ Not restored
package data writing or basic
software installation.
A temporary malfunction or
□ Restored
others due to noise is
□ Not restored
considered.
If the GOT is restored by the
□ Restored
operation on the left, the unit
□ Not restored
may has a hardware failure.
- -
Corrective action
Take the corrective action of
10.1.2 GOT installation status
check sheet.
Securely connect the cable.
If an error occurs again, proceed
■ 5.
to Faulty product
investigation.
Do not power off the GOT during
data transfer.
If an error occurs again, proceed
■ 5.
to Faulty product
investigation.
Take the action in 10.1.2 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
Faulty product investigation.
■ 5.
Proceed to
investigation.
10.1 GOT Restoration Sheets
10
■ 5.
Faulty product
10 - 7