Summary

• Page properties (1 modified, 0 added, 0 removed)

Details

Page properties

Content

...	...	@@ -1420,7 +1420,7 @@
1420	1420	[[image:thingseye-io-step-6.png||height="625" width="1000"]]
1421	1421
1422	1422
1423		-== 3.6 Interface Detail ==
	1423	+== 3.6 Interface Details ==
1424	1424
1425	1425	=== 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1426	1426
...	...	@@ -1430,16 +1430,16 @@
1430	1430	[[image:1653356991268-289.png]]
1431	1431
1432	1432
1433		-=== 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
	1433	+=== 3.6.2 Digital Input Ports: DI1/DI2 ( For LT-22222-L) ===
1434	1434
1435	1435
1436	1436	(((
1437		-The DI port of LT-22222-L can support **NPN** or **PNP** or **Dry Contact** output sensor.
	1437	+The DI ports of the LT-22222-L can support **NPN**, **PNP**, or **dry contact** output sensors.
1438	1438	)))
1439	1439
1440	1440	(((
1441	1441	(((
1442		-Internal circuit as below, the NEC2501 is a photocoupler, the Active current (from NEC2501 pin 1 to pin 2 is 1ma and the max current is 50mA). (% class="mark" %)When there is active current pass NEC2501 pin1 to pin2. The DI will be active high and DI LED status will change.
	1442	+The part of the internal circuit of the LT-22222-L shown below includes the NEC2501 photocoupler. The active current from NEC2501 pin 1 to pin 2 is 1 mA, with a maximum allowable current of 50 mA. When active current flows from NEC2501 pin 1 to pin 2, the DI becomes active HIGH, and the DI LED status changes.
1443	1443
1444	1444
1445	1445	)))
...	...	@@ -1449,7 +1449,7 @@
1449	1449
1450	1450	(((
1451	1451	(((
1452		-When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
	1452	+(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant-alternates:normal; font-variant-east-asian:normal; font-variant-ligatures:normal; font-variant-numeric:normal; font-variant-position:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)When connecting a device to the DI port, both DI1+ and DI1- must be connected.
1453	1453	)))
1454	1454	)))
1455	1455
...	...	@@ -1458,22 +1458,22 @@
1458	1458	)))
1459	1459
1460	1460	(((
1461		-(% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
	1461	+(% style="color:blue" %)**Example1**(%%): Connecting to a low-active sensor.
1462	1462	)))
1463	1463
1464	1464	(((
1465		-This type of sensor will output a low signal GND when active.
	1465	+This type of sensors outputs a low (GND) signal when active.
1466	1466	)))
1467	1467
1468	1468	* (((
1469		-Connect sensor's output to DI1-
	1469	+Connect the sensor's output to DI1-
1470	1470	)))
1471	1471	* (((
1472		-Connect sensor's VCC to DI1+.
	1472	+Connect the sensor's VCC to DI1+.
1473	1473	)))
1474	1474
1475	1475	(((
1476		-So when sensor active, the current between NEC2501 pin1 and pin2 is：
	1476	+When the sensor is active, the current between NEC2501 pin 1 and pin 2 will be：
1477	1477	)))
1478	1478
1479	1479	(((
...	...	@@ -1481,7 +1481,7 @@
1481	1481	)))
1482	1482
1483	1483	(((
1484		-If** DI1+ **= **12v**, the [[image:1653968155772-850.png||height="23" width="19"]]= 12mA , So the LT-22222-L will be able to detect this active signal.
	1484	+For example, if** DI1+ **= **12V**, the resulting current is [[image:1653968155772-850.png||height="23" width="19"]]= 12mA. Therefore, the LT-22222-L will be able to detect this active signal.
1485	1485	)))
1486	1486
1487	1487	(((
...	...	@@ -1489,22 +1489,22 @@
1489	1489	)))
1490	1490
1491	1491	(((
1492		-(% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
	1492	+(% style="color:blue" %)**Example2**(%%): Connecting to a high-active sensor.
1493	1493	)))
1494	1494
1495	1495	(((
1496		-This type of sensor will output a high signal (example 24v) when active.
	1496	+This type of sensors outputs a high signal (e.g., 24V) when active.
1497	1497	)))
1498	1498
1499	1499	* (((
1500		-Connect sensor's output to DI1+
	1500	+Connect the sensor's output to DI1+
1501	1501	)))
1502	1502	* (((
1503		-Connect sensor's GND DI1-.
	1503	+Connect the sensor's GND DI1-.
1504	1504	)))
1505	1505
1506	1506	(((
1507		-So when sensor active, the current between NEC2501 pin1 and pin2 is:
	1507	+When the sensor is active, the current between NEC2501 pin1 and pin2 will be:
1508	1508	)))
1509	1509
1510	1510	(((
...	...	@@ -1512,7 +1512,7 @@
1512	1512	)))
1513	1513
1514	1514	(((
1515		-If **DI1+ = 24v**, the[[image:1653968155772-850.png||height="23" width="19"]] 24mA , So the LT-22222-L will be able to detect this high active signal.
	1515	+If **DI1+ = 24V**, the resulting current[[image:1653968155772-850.png||height="23" width="19"]] 24mA , Therefore, the LT-22222-L will detect this high-active signal.
1516	1516	)))
1517	1517
1518	1518	(((
...	...	@@ -1520,22 +1520,22 @@
1520	1520	)))
1521	1521
1522	1522	(((
1523		-(% style="color:blue" %)**Example3**(%%): Connect to a 220v high active sensor.
	1523	+(% style="color:blue" %)**Example3**(%%): Connecting to a 220V high-active sensor.
1524	1524	)))
1525	1525
1526	1526	(((
1527		-Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler
	1527	+Assume that you want to monitor an active signal higher than 220V without damaging the photocoupler
1528	1528	)))
1529	1529
1530	1530	* (((
1531		-Connect sensor's output to DI1+ with a serial 50K resistor
	1531	+Connect the sensor's output to DI1+ with a 50K resistor in series.
1532	1532	)))
1533	1533	* (((
1534		-Connect sensor's GND DI1-.
	1534	+Connect the sensor's GND DI1-.
1535	1535	)))
1536	1536
1537	1537	(((
1538		-So when sensor active, the current between NEC2501 pin1 and pin2 is:
	1538	+When the sensor is active, the current between NEC2501 pin1 and pin2 will be:
1539	1539	)))
1540	1540
1541	1541	(((
...	...	@@ -1543,37 +1543,37 @@
1543	1543	)))
1544	1544
1545	1545	(((
1546		-If sensor output is 220v, the [[image:1653968155772-850.png||height="23" width="19"]](% id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K.  = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
	1546	+If the sensor output is 220V, then [[image:1653968155772-850.png||height="23" width="19"]](% id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K.  = 4.3mA. Therefore, the LT-22222-L will be able to safely detect this high-active signal.
1547	1547	)))
1548	1548
1549	1549
1550		-(% style="color:blue" %)**Example4**(%%): Connect to Dry Contact sensor
	1550	+(% style="color:blue" %)**Example4**(%%): Connecting to Dry Contact sensor
1551	1551
1552		-From above DI ports circuit, we can see that active the photocoupler will need to have a voltage difference between DI+ and DI- port. While the Dry Contact sensor is a passive component which can't provide this voltage difference.
	1552	+From DI port circuit above, you can see that activating the photocoupler requires a voltage difference between the DI+ and DI- ports. However, the Dry Contact sensor is a passive component and cannot provide this voltage difference.
1553	1553
1554		-To detect a Dry Contact, we can provide a power source to one pin of the Dry Contact. Below is a reference connection.
	1554	+To detect a Dry Contact, you can supply a power source to one pin of the Dry Contact. Below is a reference circuit diagram.
1555	1555
1556	1556	[[image:image-20230616235145-1.png]]
1557	1557
1558		-(% style="color:blue" %)**Example5**(%%): Connect to Open Colleactor
	1558	+(% style="color:blue" %)**Example5**(%%): Connecting to an Open Collector
1559	1559
1560	1560	[[image:image-20240219115718-1.png]]
1561	1561
1562	1562
1563		-=== 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
	1563	+=== 3.6.3 Digital Output Ports: DO1/DO2 /DO3 ===
1564	1564
1565	1565
1566		-(% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
	1566	+(% style="color:blue" %)**NPN output**(%%): GND or Float. The maximum voltage that can be applied to the output pin is 36V.
1567	1567
1568		-(% style="color:red" %)**Note: DO pins go to float when device is power off.**
	1568	+(% style="color:red" %)**Note: The DO pins will float when device is powered off.**
1569	1569
1570	1570	[[image:1653357531600-905.png]]
1571	1571
1572	1572
1573		-=== 3.6.4 Analog Input Interface ===
	1573	+=== 3.6.4 Analog Input Interfaces ===
1574	1574
1575	1575
1576		-The analog input interface is as below. The LT will measure the IN2 voltage so to calculate the current pass the Load. The formula is:
	1576	+The analog input interface is shown below. The LT-22222-L will measure the IN2 voltage to calculate the current passing through the load. The formula is:
1577	1577
1578	1578
1579	1579	(% style="color:blue" %)**AC2 = (IN2 voltage )/12**
...	...	@@ -1580,14 +1580,14 @@
1580	1580
1581	1581	[[image:1653357592296-182.png]]
1582	1582
1583		-Example to connect a 4~~20mA sensor
	1583	+Example: Connecting a 4~~20mA sensor
1584	1584
1585		-We take the wind speed sensor as an example for reference only.
	1585	+We will use the wind speed sensor as an example for reference only.
1586	1586
1587	1587
1588	1588	(% style="color:blue" %)**Specifications of the wind speed sensor:**
1589	1589
1590		-(% style="color:red" %)**Red:  12~~24v**
	1590	+(% style="color:red" %)**Red:  12~~24V**
1591	1591
1592	1592	(% style="color:#ffc000" %)**Yellow:  4~~20mA**
1593	1593
...	...	@@ -1600,7 +1600,7 @@
1600	1600	[[image:1653357648330-671.png||height="155" width="733"]]
1601	1601
1602	1602
1603		-Example connected to a regulated power supply to measure voltage
	1603	+Example: Connecting to a regulated power supply to measure voltage
1604	1604
1605	1605	[[image:image-20230608101532-1.png||height="606" width="447"]]
1606	1606
...	...	@@ -1609,7 +1609,7 @@
1609	1609	[[image:image-20230608101722-3.png||height="102" width="1139"]]
1610	1610
1611	1611
1612		-(% style="color:blue; font-weight:bold" %)**Specifications of the regulated power**(%%) (% style="color:blue" %)**:**
	1612	+(% style="color:blue; font-weight:bold" %)**Specifications of the regulated power supply**(% style="color:blue" %)**:**
1613	1613
1614	1614	(% style="color:red" %)**Red:  12~~24v**
1615	1615
...	...	@@ -1620,9 +1620,9 @@
1620	1620
1621	1621
1622	1622	(((
1623		-The LT serial controller has two relay interfaces; each interface uses two pins of the screw terminal. User can connect other device's Power Line to in serial of RO1_1 and RO_2. Such as below:
	1623	+The LT-22222-L has two relay interfaces, RO1 and RO2, each using two pins of the screw terminal (ROx-1 and ROx-2 where x is the port number, 1 or 2). You can connect a device's power line in series with one of the relay interfaces (e.g., RO1-1 and RO1-2 screw terminals). See the example below:
1624	1624
1625		-**Note**: RO pins go to Open(NO) when device is power off.
	1625	+**Note**: The ROx pins will be in the Open (NO) state when the LT-22222-L is powered off.
1626	1626	)))
1627	1627
1628	1628	[[image:image-20220524100215-9.png]]
...	...	@@ -1662,13 +1662,13 @@
1662	1662	|**RO1**|For LT-22222-L: ON when RO1 is closed, LOW when RO1 is open
1663	1663	|**RO2**|For LT-22222-L: ON when RO2 is closed, LOW when RO2 is open
1664	1664
1665		-= 4. Use AT Command =
	1665	+= 4. Using AT Command =
1666	1666
1667		-== 4.1 Access AT Command ==
	1667	+== 4.1 Connecting the LT-22222-L to a computer ==
1668	1668
1669	1669
1670	1670	(((
1671		-LT supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to LT for using AT command, as below.
	1671	+The LT-22222-L supports programming using AT Commands. You can use a USB-to-TTL adapter along with a 3.5mm Program Cable to connect the LT-22222-L to a computer, as shown below.
1672	1672	)))
1673	1673
1674	1674	[[image:1653358238933-385.png]]
...	...	@@ -1675,7 +1675,7 @@
1675	1675
1676	1676
1677	1677	(((
1678		-In PC, User needs to set (% style="color:#4f81bd" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LT. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**)(%%) to active it. As shown below:
	1678	+On the PC, the user needs to set the (% style="color:#4f81bd" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) to a baud rate of (% style="color:green" %)**9600**(%%) to access to access serial console of LT-22222-L. The AT commands are disabled by default, and a password (default:(% style="color:green" %)**123456**)(%%) must be entered to active them, as shown below:
1679	1679	)))
1680	1680
1681	1681	[[image:1653358355238-883.png]]
...	...	@@ -1682,10 +1682,12 @@
1682	1682
1683	1683
1684	1684	(((
1685		-More detail AT Command manual can be found at [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
	1685	+You can find more details in the [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1686	1686	)))
1687	1687
1688	1688	(((
	1689	+The following table lists all the AT commands related to the LT-22222-L, except for those used for switching between modes.
	1690	+
1689	1689	AT+<CMD>?        : Help on <CMD>
1690	1690	)))
1691	1691