20.1 GOT Restoration Sheet
20
- 5
17
ADDI
TIO
N
TIMES
RE
SET FOR
MA
INTENA
N
C
E
18
INST
ALL
A
TI
ON OF
B
O
OT
O
S
A
ND
ST
A
N
DA
RD OS
19
MAIN
TE
NANCE A
ND
INSP
ECTIO
N
20
ERROR MESS
AGE
AND SYSTE
M
ALA
R
M
AP
PENDI
C
E
S
IND
E
X
(4) GOT restoration procedure
Follow the procedures below starting from (a) and in order to check if the GOT is restored.
If the GOT is not restored, proceed to the next item.
*1: The GOT reset switch does not operate when the bus connection is used.
*2: When the bus connection is used, do not power the GOT ON again (OFF
ON) while the power of the PLC is
ON.
When powering the GOT ON again (OFF
ON), power OFF the PLC before that.
*3: By powering OFF the GOT, an error occurs in the control station when the MELSECNET/H or MELSECNET/10
connection is used or in the master station when the CC-Link connection (intelligent device station) is used.
Check item
Cause
Action
(a) Press the GOT reset switch.
*1, 3
Restored Not restored
(Proceed to (b).)
The GOT may have malfunctioned
temporarily due to noise.
Take the action of (4)-(h).
(b) Power the GOT ON/OFF.
*2, 3
Restored Not restored
(Proceed to (c).)
(c) Reset or power ON/OFF the PLC
CPU.
Restored Not restored
(Proceed to (d).)
(d) Power the GOT and PLC CPU
ON/OFF simultaneously.
Restored Not restored
(Proceed to (e).)
(e) Connect the cable again.
Restored Not restored
(Proceed to (f).)
The cable connection may be faulty.
Securely connect the cable.
If an error occurs again, proceed to
(5) Troubled product investigation.
(f) Reinstall the project data.
Restored Not restored
(Proceed to (g).)
Data may have been destroyed by an
action such as powering the GOT
OFF during the installation of project
data or OS.
Do not power the GOT OFF while
transferring data.
If an error occurs again, proceed to
(5) Troubled product investigation.
(g) Reinstall the OS.
Restored Not restored
(Proceed to (h).)
(h) Take the action described in the
"Action" column.
Restored Not restored
(Proceed to (i).)
The GOT may have malfunctioned
temporarily due to noise.
Take the action with referring to
GOT installation status check sheet.
(i) Replace the unit/module.
Restored Not restored
The hardware of the unit/module may
be faulty.
Install the unit/module with which the
GOT malfunctioned again to see if
the unit/module caused the
malfunction.
After checking, proceed to (5)
Troubled product investigation.
The GOT is not restored even by
performing (a) to (i).
Proceed to (5) Troubled product
investigation.
