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1420	1420	[[image:thingseye-io-step-6.png||height="625" width="1000"]]
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1422	1422
1423		-== 3.6 Interface Details ==
	1423	+== 3.6 Interface Detail ==
1424	1424
1425	1425	=== 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1426	1426
...	...	@@ -1434,12 +1434,12 @@
1434	1434
1435	1435
1436	1436	(((
1437		-The DI ports of the LT-22222-L can support **NPN**, **PNP**, or **dry contact** output sensors.
	1437	+The DI port of LT-22222-L can support **NPN** or **PNP** or **Dry Contact** output sensor.
1438	1438	)))
1439	1439
1440	1440	(((
1441	1441	(((
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.
	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.
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1444	1444
1445	1445	)))
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1449	1449
1450	1450	(((
1451	1451	(((
1452		-(% style="font-size: 11pt; font-variant-alternates: normal; font-variant-east-asian: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-position: normal; white-space: pre-wrap; font-family: Arial, sans-serif; color: rgb(0, 0, 0); font-weight: 400; font-style: normal; text-decoration: none" %)When connecting a device to the DI port, both DI1+ and DI1- must be connected.
	1452	+When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
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1454	1454	)))
1455	1455
...	...	@@ -1458,22 +1458,22 @@
1458	1458	)))
1459	1459
1460	1460	(((
1461		-(% style="color:blue" %)**Example1**(%%): Connecting to a low-active sensor.
	1461	+(% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
1462	1462	)))
1463	1463
1464	1464	(((
1465		-This type of sensors outputs a low (GND) signal when active.
	1465	+This type of sensor will output a low signal GND when active.
1466	1466	)))
1467	1467
1468	1468	* (((
1469		-Connect the sensor's output to DI1-
	1469	+Connect sensor's output to DI1-
1470	1470	)))
1471	1471	* (((
1472		-Connect the sensor's VCC to DI1+.
	1472	+Connect sensor's VCC to DI1+.
1473	1473	)))
1474	1474
1475	1475	(((
1476		-When the sensor is active, the current between NEC2501 pin 1 and pin 2 will be：
	1476	+So when sensor active, the current between NEC2501 pin1 and pin2 is：
1477	1477	)))
1478	1478
1479	1479	(((
...	...	@@ -1481,7 +1481,7 @@
1481	1481	)))
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1483	1483	(((
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.
	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.
1485	1485	)))
1486	1486
1487	1487	(((
...	...	@@ -1489,22 +1489,22 @@
1489	1489	)))
1490	1490
1491	1491	(((
1492		-(% style="color:blue" %)**Example2**(%%): Connecting to a high-active sensor.
	1492	+(% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
1493	1493	)))
1494	1494
1495	1495	(((
1496		-This type of sensors outputs a high signal (e.g., 24V) when active.
	1496	+This type of sensor will output a high signal (example 24v) when active.
1497	1497	)))
1498	1498
1499	1499	* (((
1500		-Connect the sensor's output to DI1+
	1500	+Connect sensor's output to DI1+
1501	1501	)))
1502	1502	* (((
1503		-Connect the sensor's GND DI1-.
	1503	+Connect sensor's GND DI1-.
1504	1504	)))
1505	1505
1506	1506	(((
1507		-When the sensor is active, the current between NEC2501 pin1 and pin2 will be:
	1507	+So when sensor active, the current between NEC2501 pin1 and pin2 is:
1508	1508	)))
1509	1509
1510	1510	(((
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1512	1512	)))
1513	1513
1514	1514	(((
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.
	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.
1516	1516	)))
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1518	1518	(((
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1520	1520	)))
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1523		-(% style="color:blue" %)**Example3**(%%): Connecting to a 220V high-active sensor.
	1523	+(% style="color:blue" %)**Example3**(%%): Connect to a 220v high active sensor.
1524	1524	)))
1525	1525
1526	1526	(((
1527		-Assume that you want to monitor an active signal higher than 220V without damaging the photocoupler
	1527	+Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler
1528	1528	)))
1529	1529
1530	1530	* (((
1531		-Connect the sensor's output to DI1+ with a 50K resistor in series.
	1531	+Connect sensor's output to DI1+ with a serial 50K resistor
1532	1532	)))
1533	1533	* (((
1534		-Connect the sensor's GND DI1-.
	1534	+Connect sensor's GND DI1-.
1535	1535	)))
1536	1536
1537	1537	(((
1538		-When the sensor is active, the current between NEC2501 pin1 and pin2 will be:
	1538	+So when sensor active, the current between NEC2501 pin1 and pin2 is:
1539	1539	)))
1540	1540
1541	1541	(((
...	...	@@ -1543,19 +1543,19 @@
1543	1543	)))
1544	1544
1545	1545	(((
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.
	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.
1547	1547	)))
1548	1548
1549	1549
1550		-(% style="color:blue" %)**Example4**(%%): Connecting to Dry Contact sensor
	1550	+(% style="color:blue" %)**Example4**(%%): Connect to Dry Contact sensor
1551	1551
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.
	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.
1553	1553
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.
	1554	+To detect a Dry Contact, we can provide a power source to one pin of the Dry Contact. Below is a reference connection.
1555	1555
1556	1556	[[image:image-20230616235145-1.png]]
1557	1557
1558		-(% style="color:blue" %)**Example5**(%%): Connecting to an Open Collector
	1558	+(% style="color:blue" %)**Example5**(%%): Connect to Open Colleactor
1559	1559
1560	1560	[[image:image-20240219115718-1.png]]
1561	1561