Omron CJ1W-EIP21 Operation Manuals page 90

3 Assigning Device Variables for CJ-series Units
Device variable name for CJ-
series Unit
*_IPAdrDupErr
*_LkOffErr
*_UserStaAreaCfgErr
 Unit Status 2 (EtherNet/IP Unit to CPU Unit) (*_UnitSta2)
Device variable name for CJ-
series Unit
*_UnitSta2
*_ETNOnlineSta
3-10
Data
R/W Meaning
type
BOOL R IP Address Duplica-
tion Error
BOOL R Link OFF Error
BOOL R Status Area Layout
Setting Error
Data
R/W Meaning
type
WORD R Unit Status 2
BOOL R Online
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
Description
TRUE: An ARP was sent with the specified IP
address, indicating that an IP address dupli-
cation was detected. An address duplication
is detected if there is an ARP response. If
there is an ARP response, it is assumed that
there is an address duplication. This vari-
able changes to FALSE if the power is
cycled, the Controller is reset, or the Ether-
Net/IP Unit is restarted. (The Ethernet inter-
face stops.)
FALSE: Other than the above.
Default: FALSE
TRUE: An error occurred in establishing a link with
the Ethernet switch.
FALSE: A link was normally established with the
Ethernet switch.
Default: FALSE
TRUE: There is an error in the layout settings for
the allocated words in the CIO Area. In this
case, operation uses the default layout of
the allocated words in the CIO Area. How-
ever, if a word that does not exist is speci-
fied, the user-set pattern of the layout of the
allocated words in the CIO Area is used for
operation and the user settings area is not
refreshed.
FALSE: There are no problems in the layout settings
for the allocated words in the CIO Area.
Default: FALSE
Description
Bit 00: Online
Bit 01: Tag Data Link in Operation
Bit 02: Operating IP Address Change
Bit 11: User Settings Area Enabled
Bit 14: Multiple Switches ON Error
Bit 15: Error Log Stored
TRUE: The Unit is online. (The EtherNet/IP Unit can
perform communications processing.)
FALSE: The Unit is not online. The EtherNet/IP Unit
goes offline in the following cases:
• IP Address Duplication Error
• Ethernet Communications Controller Error
(hardware error)
• BOOTP Server Error