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571	571	=== 3.3.7 Uplink on Interrupt ===
572	572
573	573
	574	+
574	574	RS485-LN support external Interrupt uplink since hardware v1.2 release.
575	575
576	576	(% aria-label="1654157342174-798.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654157342174-798.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]]
577	577
578		-(% title="Click and drag to resize" %)​(%%)When there is a high voltage (3.3v and above, the maximum is 24V, but not more than 12v is recommended) on (% style="color:blue" %)**INT**(%%) pin. At this point, an interrupt is triggered and the Device will send an uplink packet.
579	579
	580	+==== 3.3.7.1 Set Interrupt Mode ====
	581	+
	582	+
	583	+Before using the interrupt function of the **INT** pin, users can set the interrupt triggering mode as required.
	584	+
	585	+(% style="color:blue" %)**AT command:**
	586	+
	587	+* (% style="color:#037691" %)**AT+INTMOD **(%%) ~/~/ Set the trigger interrupt mode
	588	+
	589	+* (% style="color:#037691" %)**AT+INTMOD=0 **(%%) ~/~/ Disable Interrupt
	590	+
	591	+* (% style="color:#037691" %)**AT+INTMOD=1 **(%%) ~/~/ Trigger by rising and falling edge
	592	+
	593	+* (% style="color:#037691" %)**AT+INTMOD=2 **(%%) ~/~/ Trigger by falling edge **(default)**
	594	+
	595	+* (% style="color:#037691" %)**AT+INTMOD=3  **(%%) ~/~/ Trigger by rising edge
	596	+
	597	+(% style="color:blue" %)**Downlink Commands: **(% style="color:#037691" %)**0x06**
	598	+
	599	+Format: Command Code (0x06) followed by 3 bytes.
	600	+
	601	+Example1:  Downlink Payload: **06 00 00 01    **~/~/ AT+INTMOD=1
	602	+
	603	+Example2:  Downlink Payload: **06 00 00 03    **~/~/AT+INTMOD=3
	604	+
	605	+
	606	+==== 3.3.7.2 Practical application ====
	607	+
	608	+
	609	+The following uses the default interrupt triggering mode (% style="color:blue" %)**(AT+INTMOD=2)**(%%) as an example to show the interrupt function of (% style="color:blue" %)**INT**(%%):
	610	+
	611	+When a high voltage is given to the INT pin and then the level of the (% style="color:blue" %)**INT**(%%) pin changes from high to low, the interrupt is triggered by a falling edge and the RS485-LN sends an uplink data.
	612	+
	613	+(% style="color:red" %)**Note: The voltage ranges from 3.3V to 24V. Generally, it is recommended to use less than 12V.**
	614	+
580	580	**Example:**
581	581
582	582	* Use a dry contact to connect the (% style="color:blue" %)**INT**(%%) pin and (% style="color:blue" %)**VIN+**(%%) pin of the RS485-LN.
583	583
584		-When the dry contact is closed, INT and VIN+ conduct, and INT goes high, which triggers an interrupt, and the node sends an uplink message.
	619	+When the dry contact is closed, INT and VIN+ conduct and INT is high.
585	585
	621	+Disconnecting the dry contact, the level of the INT pin changes from high to low, triggering an interrupt (triggered by the falling edge along the interrupt), and the RS485-LN sends an uplink data.
586	586
	623	+[[image:image-20240925174124-5.jpeg||height="439" width="703"]]
587	587
	625	+* Use a regulated power supply or a wet contact to connect the 485-LN to trigger the interruption.(This section uses a regulated power supply as an example.)
588	588
	627	+The positive pole of the stabilized power supply is connected to the (% style="color:blue" %)**INT**(%%) pin of RS485-LN, and the negative pole of the stabilized power supply is connected to the (% style="color:blue" %)**VIN-**(%%) pin of RS485-LN.
	628	+
	629	+When the regulated power supply is operating, a high voltage is given to the INT pin and the INT level is high. When the regulated power supply is turned off, the level of the INT pin changes from
	630	+
	631	+high to low, at which time an interrupt is triggered (triggered along the falling edge), and the device will send an uplink data.
	632	+
	633	+[[image:image-20240925173243-4.jpeg||height="404" width="900"]]
	634	+
	635	+
589	589	== 3.4 Uplink Payload ==
590	590
591	591

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