Omron CS1W-ETN21 User Manual
Page 108
83
CIO Area Allocations
Section 4-1
Accessing Memory (Receiving Mail) (Bit 2)
This bit turns ON while CPU Unit memory is being accessed to store an
attached file using the mail receive function, and it turns OFF after the file has
been stored.
System Setup Format (Bits 8 to 11)
These bits show the format classification in the CPU Bus Unit System Setup
Area.
Error Status (Ethernet Unit
to CPU Unit)
The status of errors that occur at the Ethernet Unit is reflected as shown in the
following diagram.
Bit address
Format classification
11
10
9
8
0
0
0
0
ETN11 mode
0
0
0
1
ETN21 mode
Other
Reserve
Bit
Error
Status
Manipulated by
Unit operation
0 to 1
(Not used.)
---
---
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2
IP address setting error
ON
Unit
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)
OFF
Unit
OFF when the IP address is normal.
3
IP address table error
ON
Unit
On if the IP address table information is incorrect.
OFF
Unit
OFF when the IP address table is normal.
4
IP router table error
ON
Unit
ON if the IP router table information is incorrect.
OFF
Unit
OFF when the IP address table is normal.
5
DNS server error
ON
Unit
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
Unit
OFF when DNS server operation is normal.
6
Routing table error
ON
Unit
ON if the routing table information is incorrect.
OFF
Unit
OFF when the routing table is normal.
7 to 10
(Not used.)
---
---
---
Bit 02: IP address setting error
Bit 03: IP address table error
Bit 04: IP router table error
Bit 06: Routing table error
Bit 11: SNTP server error
Bit 12: SMTP server error
Bit 13: POP server error
Bit 14: Address disagreement
n+18
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Bit 05: DNS server error
Bit 15: EEPROM error