Notifier LCD-80, Installation Manual

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PN 15037:D2 9/9/02 41
Acknowledge/Step Switch
When the ACK/STEP switch is pressed on the front panel, the LCD-
80 sends an Acknowledge command to the control panel, emulating a
CRT terminal.
Silence Switch
When the SILENCE switch is pressed on the front panel, the LCD-80
sends a Signal Silence command to the control panel, emulating the
CRT terminal.
System Reset Switch
When the System Reset switch is pressed on the front panel, the LCD-
80 sends a Reset command to the control panel, emulating the CRT
terminal.
Pending Display
The LCD-80 will keep a count of alarms in the system (number of
alarm messages, minus alarm clear messages, since the last ALL
SYSTEMS NORMAL message). When this key is pressed the alarm
count is displayed in place of the time/date for 10 seconds. AM2020/
AFP1010 Note: This feature requires Revision 5 software or greater.
Contrast Adjust
Repeatedly press this switch until the display’s contrast is acceptable.
Local Silence/Lamp Test Switch
If the backlit LCD display has been turned off due to a trouble
condition in the system, pressing this switch will illuminate the
display for 60 seconds. This switch also silences the local piezo.
While it is held down, all segments on the display will be turned on
and the piezo will sound.
3.1.3 Terminal Mode EIA-485 Connection
Requirements
See Figure 3-2 for wiring diagram; the following requirements must
be observed:
• Power-limited and supervised.
• Maximum of 32 LCD-80s may be connected to this circuit. Note:
When powered by the AFP-200, a maximum of four LCD-80s
may be connected to this circuit.
• 6000 feet maximum distance (@ 16 AWG) between the control
panel and the first or last LCD-80 and between each LCD-80.
• Use overall foil/braided-shield twisted pair cable suitable for
EIA-485 applications.