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Document 50182 Rev A2 10/28/96 P/N 50182:A2
The LCD-80TM operates like a CRT terminal without full keyboard capability, but with the advantages of 24 VDC
power, wall mount, and multiple terminal location with Acknowledge, Signal Silence and Reset. The LCD-80TM has
full point-display capacity and requires no programming.
CCM-1
NOTES:
EIA-485: Maximum of 6000 feet between units.
Up to 32 LCD-80TMs may be used on the EIA-485 circuit (3.2
amps regulated power max required - consult control panel's
battery calculations).
Between each LCD-80TM are four wires: A twisted-shielded pair
for data communications and an open pair for 24 VDC power.
The return circuit only requires two wires for data communication.
Optional CRT Display Monitor connection to CCM-1. One
max - requires programming at the AM2020/AFP1010. If a
CRT is not used, connect the LCD-80TM directly to DIA
TB1.
AM2020/AFP1010 Note: The EIA-485 interface used for the LCD-80TM should not be confused with the EIA-485
circuit used for the ACS interface. The CCM-1 Convertor Module converts the EIA-232 Terminal Interface from the
SIB-2048 into the EIA-485 standard required by the LCD-80TM. The DIA-2020N can support LCD-80TMs in terminal
mode without the need for a CCM-1 converter module (if a CRT is not being used).
Figure 1-2: Typical LCD-80TM Connection
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