6.7
Date Code 20020501 SEL-2701 Ethernet Processor Instruction Manual
Troubleshooting
Troubleshooting Procedures
Troubleshooting Procedures
Troubleshooting procedures for common problems are listed in Table 6.3. The
table lists each symptom and the possible causes and corresponding diagnosis/
solutions. Relevant SEL-2701 settings are listed in all capitals. See Section 3:
Settings and Commands for details of the SEL-2701 settings. Refer to the
host-specific section for more information on operation and settings in your
host.
Table 6.3 Troubleshooting Procedures (Sheet 1 of 2)
Possible Cause Diagnosis/Solution
SEL-2701 Does Not Appear in Host Status Report
Card not installed properly If the card did not initialize properly and begin communi-
cation with the host, it will not be displayed. Perform Ini-
tial Checkout on page 2.4 in Section 2: Installation.
Reinstall the card if necessary.
Pwr/Tx LED Off Continuously
No power to host Verify that the host has power (check enabled light or press
LED Test).
High volume of outgoing
Ethernet messages
This situation may occur during normal operation. Tempo-
rarily disconnect the Ethernet network cables or change
NETPORT setting to D and verify that power indicator
LED stays on continuously. If LED does not return to On
state, check other possible causes.
Card not installed properly Perform Initial Checkout on page 2.4 in Section 2: Instal-
lation. Reinstall the card if necessary.
Lnk/Rx Off Continuously
No power to host Verify that the host has power (check enabled light or press
LED Test).
High volume of Ethernet
messages on network
This situation may occur during normal operation. Tempo-
rarily disconnect the Ethernet network cables or change
NETPORT setting to D and verify that power indicator
LED stays on continuously. If LED does not return to On
state, check other possible causes.
All network ports disabled Verify that either the A or B network port indicator on the
SEL-2701 is on. Change NETPORT setting enable an
Ethernet network port.
Not properly connected to
Ethernet network
Verify connections to the Ethernet network. Verify that the
Ethernet network is connected to either the A or B network
port indicated by the SEL-2701 LEDs and that the medium/
data transmission speeds are correct.
Card not installed properly Perform Initial Checkout on page 2.4 in Section 2: Instal-
lation
. Reinstall the card if necessary.
Cannot Establish Telnet Connection to Host or SEL-2701
Not properly connected to
Ethernet network
Verify connections to the Ethernet network. Verify that the
Ethernet network is connected to either the A or B network
port indicated by the SEL-2701 LEDs and that the medium/
data transmission speeds are correct. Check Pwr/Tx and
Lnk/Rx LEDs.
Using incorrect port num-
ber or IP address
Verify that you are using the correct Telnet port number
(T1PNUM to host and T2PNUM to SEL-2701) and IP
address (IPADDR) in your Telnet application.
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