Last modified by Bei Jinggeng on 2025/01/10 15:06
<
From version < 115.1 >
edited by Karry Zhuang
on 2024/08/16 11:30
To version < 123.2 >
edited by Mengting Qiu
on 2024/09/25 17:36
>
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135 135  v1.0: Release
136 136  )))
137 137  
138 +
139 +== 1.7 Pin Definitions ==
140 +
141 +
142 +The following diagram shows the V1.2 hardware version.
143 +
144 +[[image:image-20240925161141-1.jpeg||height="412" width="405"]]
145 +
146 +[[image:image-20240925161157-2.jpeg||height="367" width="545"]]
147 +
138 138  
139 139  )))
140 140  )))
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561 561  === 3.3.7 Uplink on Interrupt ===
562 562  
563 563  
574 +
564 564  RS485-LN support external Interrupt uplink since hardware v1.2 release.
565 565  
566 -(% 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"]](% title="Click and drag to resize" %)​
577 +(% 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"]]
567 567  
568 -Connect the Interrupt pin to RS485-LN INT port and connect the GND pin to V- port. When there is a high voltage (Max 24v) on INT pin. Device will send an uplink packet.
569 569  
580 +==== 3.3.7.1 Set Interrupt Mode ====
570 570  
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 +
615 +**Example:**
616 +
617 +* Use a dry contact to connect the (% style="color:blue" %)**INT**(%%) pin and (% style="color:blue" %)**VIN+**(%%) pin of the RS485-LN.
618 +
619 +When the dry contact is closed, INT and VIN+ conduct and INT is high.
620 +
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.
622 +
623 +[[image:image-20240925164510-3.jpeg||height="414" width="656"]]
624 +
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.)
626 +
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 +
571 571  == 3.4 Uplink Payload ==
572 572  
573 573  
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736 736  )))
737 737  
738 738  (((
739 -(% style="color:blue" %)**Example 2:**  (%%) ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
804 +(% style="color:blue" %)**Example 2:**  (%%)
740 740  )))
741 741  
742 742  (((
743 -User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
808 +Check TTL Sensor return:
744 744  )))
745 745  
746 746  (((
747 -
748 -)))
749 -
750 750  (((
751 -(((
752 -RS485-LN got this downlink command and send (% style="color:#4f81bd" %)**0A 08 00 04 00 01 **(%%)to Modbus network. One of the RS485 sensor in the network send back Modbus reply **0A 08 00 04 00 00**. RS485-LN get this reply and combine with the original downlink command and uplink. The uplink message is:  **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
813 +[[image:http://8.211.40.43/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/test/WebHome/1654132684752-193.png?rev=1.1||alt="1654132684752-193.png"]](% title="Click and drag to resize" %)​
753 753  )))
754 -
755 -
756 756  )))
757 757  
758 -(((
759 - (% aria-label="1654159460680-153.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654159460680-153.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"]](% title="Click and drag to resize" %)​
760 -)))
761 761  
762 762  
763 -
764 764  ==== (% style="color:blue" %)**Set Payload version**(%%) ====
765 765  
766 766  
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