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5 checking the cable system, Checking the cable system, Khfnlqj wkh &deoh 6\vwhp – Siemens CP 1515 User Manual

Page 122

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122

Industrial Ethernet Wireless LAN RLM Manager, CP 1515 Manager

C79000-G8976-C171-01

Your network system will generate a large number of error messages as
a result of the faulty connection(s). As these messages are taking up
bandwidth, the performance of your network may become very slow.

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The occurrence of a problem in the cabling system can be diagnosed with
the remote statistics found on “Remote” tab in the monitor mode of the
RLM Manager.

1.

Select

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(WKHUQHW

from the pull-down menu to display the

statistics for the Ethernet interface.

2. Compare the number of

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with the number of

%ULGJH LQ

SDFNHWV

.

When the number of “In errors” is 1% or more of the “Bridge in
packets”

, this may indicate a cabling problem.

3. Compare the number of packets

2XW HUURUV

with the number of

%ULGJH

RXW SDFNHWV

.

When the number of “Out errors” is 1% or more of the “Bridge out
packets”

, it is likely that there is a cabling problem.

4. Compare the number of

2XW FDUULHU VHQVH HUURUV

with the number of

%ULGJH RXW SDFNHWV

.

When the number of “Out carrier sense errors” is 1% of the
“Bridge out packets” or the value of the “Out carrier sense errors”
increases too rapidly, this indicates insufficient space on the
network due to a backbone overload, or faulty cabling.