Activating pre-alarm function, Deactivating pre-alarm function – NEXCOM NViS 2310 User Manual

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Appendix D: Signal Connection of MCU DI/DO

NViS2310 User Manual

Activating Pre-Alarm function

Step 1: Setup Pre-Alarm function

Step 2: Connect Event Button to sensor (such as reed switch)

Normally, the status of Event Button is “Short”. Once the status becomes
“Open”, Event Button will be triggered.

Step 3: Connect MCU-DI2 to sensor

Normally, the status of MCU-DI2 is “Low”. Once the status becomes
“High”, MCU-DI2 will be triggered.

Low level: < 3.3V
High level: > 3.3V

Step 4: Connect MCU-DO1 and MCU-DO2 to external relays

Relays can be used to drive external devices (such as siren or warning light).
Each MCU-DO port can wire a relay.

(Normal)
MCU-DO1 & MCU-DO2: OPEN

(Triggered)
MCU-DO1 & MCU-DO2: GND

Step 5: Flag A and Flag C will become “1” automatically

Flag A: at I/O Address -- 0x0ED8 bit4
Flag C: at I/O Address -- 0x0ED8 bit5

Deactivating Pre-Alarm function

(For Event Button)
Option 1:

If Central Locking System is initiated by negative signal:
When MCU-DI1 is “High”, Pre-Alarm Function is deactivated.

If Central Locking System is initiated by positive signal:
When MCU-DI1 is “Low”, Pre-Alarm Function is deactivated.

Option 2:

Whiting”1” to the Flag B, Pre-Alarm Function will be deactivated.
Flag B: at I/O Address -- 0x0ED8 bit2

Option 3:

When Ignition signal is “High”, Pre-Alarm Function is deactivated.