Correcting Communication Failures; Nk82Xx Generated A Fault; Control Unit Generated A Fault - Siemens NK8222 Installation, Function & Configuration

Maintenance and diagnostics
10.5

Correcting communication failures

10.5.1 NK82xx generated a fault

10.5.2 Control unit generated a fault

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Building Technologies
Fire Safety & Security Products
If an NK82xx generates a fault, there may be one or more causes. The problem
may be in the NK82xx unit, or in the NK82xx connection to the DMS.
Check the NK82xx
Check power, vital function, and diagnostic state on the respective LED, which is
located on the front panel of NK82xx.
Note: If connection to NK82xx is lost, you might reset the device back to factory
configuration by setting DIP-switch 2 to ON.
Check network connections
 LAN
Diagnostic information about the LAN state can be obtained from different lay-
ers:
Link state LED of Repeater or Ethernet NIC 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:
ipconfig /all
ping n.n.n.n
ping n.n.n.n –t
Netstat
arp –a
If a control unit generated a fault, the problem may be in the connectivity between
one of the control units (or subsystems) and the NK82xx.
Check network connections
 CerCom/LON (CS6 Guarto only)
Note: Please refer to the Echelon Manual for detailed specification on how to set
up a LON network: http://www.echelon.com/Support/documentation/
Section: Engineering Bulletins → Media & Wiring
The LON networks are sensitive to improper termination. If it appears, that the
LON communication is not reliable, check the following points:
 Cabling, connectors;
 Proper termination;
 Physical LON addresses have to be unique in a LON-segment.
 Cable length / quality according to LON FT/TP-10 requirements;
Shows comprehensive information about the local
PC's IP configuration (for example, the IP address)
Lets you check the communication with an IP network
participant ("n.n.n.n" is the IP address to check)
Lets you continuously check the communication with
an IP network participant ("n.n.n.n" is the IP address
to check)
Provides you the information about all established
TCP/IP connections
Displays the physical address translation table
048_DMS_NK8000_ICC_MP4.40_A6V10062437_a_en.doc
06.2011