CXIGN Command - Ignition Mode

Configures the IGN variable operation, maintaining its function according to the physical input sensing, or virtualizing its logical state. Also allows adjusting the stabilization (debounce) times for validating ignition turn-on and turn-off.

What is it for?

Use case	Description
🔌 Simplified installation	Detect ignition by voltage
🛠️ No physical connection	Virtualize IGN in portable applications
📊 Force state	Manually set IGN for testing
⚡ By power supply	Use battery voltage as indicator
⏱️ Filter noise	Tune turn-on / turn-off stabilization times

Description

This command allows:

Maintain normal operation according to the physical ignition input
Manually set its value to a predetermined state
Adapt its operation to the device’s external power supply voltage
Release the IN07 input in manual mode, so it can be used for another purpose
Configure stabilization times (ton and toff) to avoid false positives from intermittent signals

The voltage mode allows dispensing with the electrical connection for ignition sensing.

Commands

Configure


SCXIGNa[,ton[,toff]]

Query


QCXIGN

Response


RCXIGNa,ton,toff

Parameters

Mode (`a`)

Value	Description
0	Normal (default). According to physical ignition input
1	Manual, allowing state setting through SS command
2	By voltage (according to main power supply)
3	Manual releasing IN07 (allows using IN07 for another purpose)

Stabilization times (`ton`, `toff`)

Parameter	Function	Range	Default
ton	Time the signal must remain active to confirm IGN ON	1 to 9999	100 (10 s)
toff	Time the signal must remain inactive to confirm IGN OFF	1 to 9999	100 (10 s)

ton and toff are expressed in units of 100 ms (e.g. ton=50 equals 5 s). Both are optional: if omitted, previously configured values are kept.

Examples

Manual mode with fixed IGN


>SCXIGN1<
>SSSIGN11<

Manual operation mode is set, then the IGN value is fixed = 1 (regardless of the case).

Configure custom times


>SCXIGN0,50,150<

Normal mode (physical input), with ton = 5 s and toff = 15 s. Useful when a slower turn-off is desired to capture post-ignition events.

Change only the turn-on time


>SCXIGN0,200<

Normal mode, ton = 20 s; toff keeps its previously configured value.

Query current configuration


>QCXIGN<
>RCXIGN0,100,100<

Compatibility

💾Firmware:v1.00.00

SPLegacy

ULLegacy

MTLegacy

C3Legacy

C5Legacy

SP-IOT

SM-IOT

ZE-IOT

Version availability:

Mode 3 (Manual releasing IN07): available from firmware v1.09.15.
Timing parameters ton and toff: available from firmware v1.09.17.

On earlier versions, only SCXIGN<a> with a between 0 and 2 is accepted.