Fault Indicators On Components; Communication Problems In Networked Systems - Siemens FS720 Commissioning, Maintenance, Troubleshooting

24.4 Fault indicators on components

24.5 Communication problems in networked systems

Building Technologies
Fire Safety
The components are equipped with LED indicating the status of the component.
You will find the meaning of the indications in document A6V10210368. See
chapter 'Applicable documents'.
See also
2 Applicable documents [➙ 11]
Problem: You are unable to communicate with a ↑ 'Station' in a networked ↑ site.
This may be due to the following causes.
Date and time are not correct
Check the date and time of the 'Station'.
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Date and time are not permanently saved in the 'Station'. If this data is not defined
correctly, it is not possible to communicate with the corresponding 'Station' in the
network or via Cerberus-Engineering-Tool.
The date and time must be checked regularly for the following reasons:
● The deviation of the internal clock is up to four minutes per month.
● When data is downloaded using the 'Download site' function, and when a
'Station' is restarted, the internal clock does not continue working.
● If a 'Station' is de-energized, the date and time of the internal clock is lost.
Network cable disconnected too quickly / connection to 'Station' not
disconnected correctly
If 'Stations' are mounted close to one another, you may be able to move the
network cable from one 'Station' to the next without disconnecting the connection
correctly. If this is done, a connection cannot be immediately re-established on the
next 'Station'.
Disconnect the connection between PC and 'Station':
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– In Cerberus-Engineering-Tool , select the 'Commissioning' > 'Disconnect'
command.
– Wait at least two minutes before inserting the network cable into the next
'Station'.
Repair
Fault indicators on components
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2018-08-29