Networking
P/N 06-237058-001 5-23 February 2012
8. Select 1 to Isolate the node and the following confirmation is displayed.
Figure 5-33. Prompt for Node to be Isolated
9. Press the <Backspace> Key multiple times as required to exit from the Menu operational mode.
The selected node will now be isolated from the network.
5-8.14.1.5 Removing Power from a Control Unit
A networked control unit should not to be powered down if it is on line. Any changes that occurred
among the other control units while it was powered down may not be transmitted to the control unit
when it is powered up again. This will lead to reporting discrepancies on the displays of control units
that are configured to log and display all network events. Use the procedure in Section 5-8.14.1.4 to
isolate a control unit first if it is necessary to power it down. Do not isolate a control unit from the
network if it is inadvertently powered down. Wait for control unit to restart and be recognized again
by the network.
5-8.14.1.6 Resynchronizing the Network
Some networked control units may occasionally retain alarm, supervisory or trouble events from
other control units in the network even if the events have cleared from the other control units. This
can be corrected by the “Resynch Network” function that resynchronizes all messages across the
network.
Network events can be resynchronized by using a control unit configured as Group 0, or by using
• Another control unit in the same group as the control unit retaining events
• Any control unit in a network configured for global operation
• The control unit itself
Use the following procedure to resynchronize the network:
1. Press the 0 Key on the keypad of the control unit being used to resynchronize the network. This
display will show this message:
Figure 5-34. Password Prompt
2. Enter the Level-2 Password and then press the <Enter> Key. The network-node prompt will
appear as follows:
Figure 5-35. Network Node Prompt
ISOLATE/DE-ISOLATE NODE
LOCAL NODE HAS BEEN ISOLATED
PLEASE ENTER PASSWORD
****
PRESS ENTER TO SELECT THE LOCAL NODE
OR ENTER NETWORK NODE NO. (1 - 64)*
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