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SW1 DIP Switch Settings
The UP position on SW1 is the OFF state. Refer to Figure 1-2 for an explanation of DIP
switch positions. SW1 switch settings are as follows:
1 - ON (DOWN) = Receive/Transmit, OFF (UP) = Receive only.
Set switch 1 to OFF (UP) position for all LCD-40s except the last (or only) LCD-
40 on EIA-485 loop. Set switch to ON (DOWN) position for the last or only LCD-
40 on EIA-485 loop to allow transmission of a supervision signal and function key
depressions back to the FACP. The last or only LCD-40 must be set for Re-
ceive/Transmit (switch 1 in the DOWN position).
A break (open circuit) in the power or EIA-485 connections creates an LCD-40
fault at the MS-9200 panel. All LCD-40s before the break will continue to display
information but the function keys will no longer operate.
2 - ON (DOWN) = Key-switch enabled, OFF (UP) = Key-switch disabled.
Switch 2 set to ON (DOWN) position enables key-switch operation. The key-
switch may now be used to enable the LCD-40 membrane switches, allowing
remote switch functions, or lockout the switches, preventing remote switch
functions.
Switch 2 set to OFF (UP) position disables the key-switch operation. Refer to
Operation Section for key-switch function description.
3 - ON (DOWN) = Piezo sounder enabled, OFF (UP) = Piezo sounder disabled.
CAUTION: Piezo sounder must not be disabled without prior approval of the
Local Authority Having Jurisdiction (LAHJ).
4 through 8 - Future use.
DOWN POSITION = ON STATE
NOTE - SW1 DIP switch settings as illustrated in Figure 1-2 are as follows:
1) DIP switch 1: ON (DOWN) = Receive/Transmit. This setting is used for the last or only LCD-40
on the EIA-485 loop.
2) DIP switch 2: ON (DOWN) = Membrane keys enabled.
3) DIP switch 3: OFF (UP) = Piezo sounder disabled (requires approval of LAHJ).
4) DIP switches 4 - 8: Not used.
Figure 1-2: DIP Switch Settings Example
6
Technical Manuals Online! - http://www.tech-man.com
Document 50327
Rev B
firealarmresources.com
UP (OPEN) POSITION = OFF STATE
3/16/96
P/N 50327:B
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