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15-59
15 Ethernet
CP2E CPU Unit Software User’s Manual(W614)
15-7 Status Allo
catio
ns o
f B
u
lit-in Ethernet P
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rt
15
15-7 Status Allocations of Bulit-in
Ethernet Port
The following table and descriptions cover the words and bits in the Auxiliary Area of PLC memory that
are related to the status of built-in Ethernet port.
Address Bit(s) Name Status Unit operation Access
A40 to A44 --- Ethernet Commu-
nication Error
Information --- When an error occurs in Ethernet communi-
cation, the error information can be stored.
Refer to
6-1-11 Other Error s in the CP2E
CPU Unit Hardware U s er' s Manual (Cat. No.
W61 3 ).
Read only
A45 14 Link Status (N20:
Ethernet port,
N
3 0/40/60:
PORT1A)
ON Ethernet link is established. Read only
OFF Ethernet link is terminated.
15 Link Status
(N
3 0/40/60:
PORT1B)
ON Ethernet link is established.
OFF Ethernet link is terminated.
A46 2 IP Address Set-
ting Error Flag ON ON if any of the following conditions apply to
the IP address.
• All bits in the host ID are 0 or 1.
• All bits in the network ID are 0 or 1.
• All bits in the subnet ID are 1.
• The IP address begins with 127 (0x7F)
Read only
OFF OFF when the IP address is normal.
3 IP Address Table
Error Flag ON ON if the IP address table information is
incorrect.
OFF OFF when the IP address table is normal.
4 IP Router Table
Error Flag ON ON if the IP router table information is incor-
rect.
OFF OFF when the IP address table is normal.
5 DNS Server Error
Flag ON ON when the following errors occur during
DNS server operation:
• An illegal server IP address is set.
• A timeout occurs during communications
with the server.
OFF OFF when DNS server operation is normal.
6 Routing Table
Error Flag ON ON if the routing table information is incor-
rect.
OFF OFF when the routing table is normal.
11 SNTP Server Error ON ON when the following errors occur during
SNTP server operation:
• An illegal server IP address or host name is
set.
• A timeout occurs during communications
with the server.
OFF OFF when SNTP server operation is normal.
14 Address Disagree-
ment Flag ON ON if the remote IP address is set to auto-
matic generation but the local IP address host
number and FINS node address do not agree
OFF OFF under all other circumstances
15 Ethernet Commu-
nication Error Flag ON ON when Ethernet communication error
occurs.
OFF OFF when Ethernet communication error has
been cleared by Ethernet communication
error clear flag.