4
FUNCTIONS
1
OVE
R
VI
EW
2
SYS
TEM
CONFIGURA
T
ION
3
SP
ECIFI
C
A
T
IO
N
S
4
FUNCT
IONS
5
P
R
OCEDURES AND
SE
TTI
N
G
S BE
FO
R
E
O
PERA
T
IO
N
6
P
A
RAMETER
SETTI
NGS
7
IN
ST
A
LLI
NG
AN
D
UN
IN
S
TAL
LI
N
G
S
O
F
T
W
AR
E P
A
CK
AG
E
S
8
CC
IE Control
UT
IL
ITY
4.3 Driver WDT function
4
- 7
4.3
Driver WDT function
Driver WDT function monitors the operation of the software (operating system, driver)
inside the hardware by the timer function on CC-Link IE Controller Network board.
When the driver cannot reset the timer of the board within the specified driver WDT
monitoring time, CC-Link IE Controller Network board detects driver WDT error.
Driver WDT function detects driver operation delay due to the access error from the driver
to CC-Link IE Controller Network board or system high load.
(1) Driver WDT settings
For the setting methods, refer to the following section.
Section 8.4.6 Driver setting screen
Remarks
The driver WDT function is set to invalid as a default.
(2) When the driver WDT error has occurred
The following shows the operation when driver WDT error has occurred.
(a) CC-Link IE Controller Network board and the driver stop communication and are
disconnected from the network in order to avoid an erroneous output.
(b) RUN LED flicks and RD LED turns ON on the CC-Link IE Controller Network
board.
(c) "-28158 (9202H) Driver WDT error" occurs when accessing CC-Link IE Controller
Network board from the application program in which the CC IE Control utility and
MELSEC data link library function are used.
POINT
• When the multiple applications in which MELSEC data link library is used
are executed, driver WDT error is returned to all the programs. However,
only the CC-Link IE Controller Network board in which the driver WDT
error has occurred is recognized as an error station on the network.
When using driver WDT function, set the monitoring timer considering the
margin of the personal computer load.
• For the troubleshooting, refer to the following chapter.
