Harrington Signal Network Plus 21, Manual

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NP21 Access Terminal Guide
01-28-02
Technical Service 21
Screen 17 Port 1
This screen lets the viewer see the display information about the primary network port.
Includes the status of the panels/annunciators that are and should be on line.
Commands
0V
Clear counters on screen
To help trouble shoot when you have a communication failure between
panels/annunciators, when system is set up in a network configuration. Remove field
wire from the Com. Port 1 and Com. Port 2 and jumper Com. 1 & Com. 2 to itself and
view screens 16 or 17 and see if it comes back on line. This will help to determine which
piece of equipment is not responding.