Maintenance
20 1553-CNH 160 0787 Uen PA2 2005-09-23
4 Maintenance
4.1 Replacing ECN
The ECN is uniquely identified in PEM by its MAC address. After replacing
the HW, the MAC address of the new ECN must be registered in PEM. It is
vital when replacing an ECN that no embedded nodes are changed until
the registration is completed. To replace an ECN:
1. Disconnect the power and Ethernet connections from the ECN. The
Ethernet connection must be marked, so they can be reconnected to
the same port number in the new HW.
2. Dismount the old ECN.
3. Mount the new ECN.
4. Connect the power and perform the basic configuration according to
the instruction in the ECN330 Installation Manual or ECN320 Installa-
tion Manual. Note that the IP address of the new node must be the
same as the old one.
5. Connect the Ethernet cables to the ECN.
6. Update the SW if needed (from PEM).
7. Possible restore of configuration information from a backup file.
8. Make a Forced Synchronization from PEM (button in the EAN proper-
ties, in the Network Configuration Manager). This action will update the
PEM database with the MAC address of the new node, and download
the configuration to all the embedded nodes.
9. The replacement is complete.
Note: An ECN330 must be replaced with an ECN330 and not an
ECN320. An ECN320 cannot be replaced with an ECN330 but only
with an ECN320.
4.2 Replacing a Fuse
The fuse protecting the ECN’s DC power supply is disposable. If the fuse
has blown, replace it with a new 20 A, 250V type T fuse.
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