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Maintenance and diagnostics
9
Correcting communication failures
11.3
11.3.1
76
Building Technologies
CPS Fire Safety
Configuring logging function on the fly
Note: The reset of the unit results in restoring the original logging configuration
saved in Composer.
Correcting communication failures
IEC communication problems
Communication faults on the IEC may depend on different causes. The problem
can occur in the NK8237 unit or in the connections.
Check the NK8237
Check power, vital function, and diagnostic state of the corresponding LED located
on the front panel.
Note: If you need to modify the IP address because of a network change, you
might want to reset the device back to factory configuration by setting DIP-switch
1 or 2 to ON (see Internal DIP switches [➙ 17]) and then connect using the known
address to change the IP address.
Check the network connections (IEC TCP/IP)
LAN
⚫
Diagnostic information about the LAN state can be obtained from different
layers:
Link state LED of Repeater or Ethernet adapters gives you information about
the physical connection and the speed of the Ethernet link.
1) Select Start > Programs > Accessories > Command Prompt.
2) Choose from the following commands:
A6V10854379_a_en
25.01.2019
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