4-3
Section
CIO Area Allocations
54
The status of errors that occur at the Ethernet Unit is reflected as shown in the
following diagram.
Bit 01: Transceiver echo test error
Bit 02: IP address error
Bit 03: IP address table error
Bit 04: IP router table error
Bit 06: Routing table error
Bit 07: Transceiver error
Bit 08: Internode test flag (OFF: Test stopped, ON: Test running)
Bit 14: Address disagreement
Bit 15: EEPROM error
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
n+18
Bit
Error
Status
Manipulated
by
Unit operation
0
(Not used.)
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1
Transceiver echo test error
ON
Unit
ON if an error occurred during the self diagnostic
testing after the Unit was turned ON or reset.
OFF
Unit
OFF if the self diagnostic testing after the Unit was
turned ON or reset was normal.
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
(Not used.)
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6
Routing table error
ON
Unit
ON if the routing table information is incorrect.
OFF
Unit
OFF when the routing table is normal.
7
Transceiver error
ON
Unit
ON when the transceiver cable is disconnected, the
transceiver is not receiving power, or the transceiver is
defective. Once this bit turns ON, it will not turn back
OFF even if the transceiver status returns to normal.
OFF
Unit
OFF when the transceiver is normal.
8
Internode Test Flag
ON
Unit
ON during internode testing.
OFF
Unit
OFF while internode testing is stopped.
9 to 13
(Not used.)
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14
Address disagreement
ON
Unit
ON if the remote IP address is set to automatic
generation but the local IP address host number and
FINS node number do not agree.
OFF
Unit
OFF under all other circumstances.
15
EEPROM error
ON
Unit
ON if an error has occurred in the EEPROM memory.
OFF
Unit
OFF when the EEPROM memory is normal.
Error Status (Ethernet
Unit to CPU Unit)
