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| en:automation:02-glossary:1wire-hidden [2022/10/10 11:27] – [1-Wire] lpolcerova | en:automation:02-glossary:1wire-hidden [2025/04/28 16:18] (current) – [Creating a multi-hub extensive network of 1-Wire sensors] updated wrap ofojt |
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| | 4 | VCC (+5 V⎓) | | | 4 | VCC (+5 V⎓) | |
| | 5 | VCC (+5 V⎓) | | | 5 | VCC (+5 V⎓) | |
| | 6 | {{:files:data_0.png?nolink&15|}}1W (DATA_0) | | | 6 | {{:files:data_0.png?nolink&15|}}1W (DATA_1) | |
| | 7 | {{:files:data_1.png?nolink&15|}}1W (DATA_1) | | | 7 | {{:files:data_1.png?nolink&15|}}1W (DATA_0) | |
| | 8 | GND | | | 8 | GND | |
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| <WRAP center round box> | <WRAP center round box> |
| **Note:** {{:files:data_0.png?nolink&15|}}1W, sometimes also DATA_0, is the main data wire. That said, if you connect a cable sensor with only a single data wire to the RJ45 connector, always connect it to pin 6 (eg. {{:files:data_0.png?nolink&15|}}1W pin). The {{:files:data_1.png?nolink&15|}}1W contact, sometimes also DATA_1, is a supplemental contact of Unipi sensors designed for a maximum possible bus serialization and serves for connecting the next sensor on the bus. The Unipi 1-Wire hub can serve as an example of the double-data wire principle. If you use a non-Unipi cable sensor with only a single data wire, the above-mentioned serialization with Unipi 1-Wire hub is not possible. You can, however, connect the sensor to the end of the bus (eg. as the last sensor in the hub). | **Note:** {{:files:data_1.png?nolink&15|}}1W, sometimes also DATA_0, is the main data wire. That said, if you connect a cable sensor with only a single data wire to the RJ45 connector, always connect it to pin 7 (eg. {{:files:data_1.png?nolink&15|}}1W pin). The {{:files:data_0.png?nolink&15|}}1W contact, sometimes also DATA_1, is a supplemental contact of Unipi sensors designed for a maximum possible bus serialization and serves for connecting the next sensor on the bus. The Unipi 1-Wire hub can serve as an example of the double-data wire principle. If you use a non-Unipi cable sensor with only a single data wire, the above-mentioned serialization with Unipi 1-Wire hub is not possible. You can, however, connect the sensor to the end of the bus (eg. as the last sensor in the hub). |
| </WRAP> | </WRAP> |
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| | <WRAP group center round box 95%> |
| <WRAP center round info 90%> | {{ :files:img_warning-line_b.png?nolink |}} |
| | <WRAP half column 13%> |
| | {{ :en:hw:08_safety-instructions_pseudo-ISO-7010-info.png?nolink |(!)}} |
| | </WRAP> |
| | <WRAP half column 83%> |
| | **Note:** \\ |
| The Unipi [[https://www.unipi.technology/cs/unipi-extension-xg18-p331|Unipi Extension xG18]] module allows an easy connection of multiple temperature sensors using a single data wire, with each sensor having its own channel (connector). Connecting multiple sensors to a single channel is not possible. | The Unipi [[https://www.unipi.technology/cs/unipi-extension-xg18-p331|Unipi Extension xG18]] module allows an easy connection of multiple temperature sensors using a single data wire, with each sensor having its own channel (connector). Connecting multiple sensors to a single channel is not possible. |
| | </WRAP> |
| </WRAP> | </WRAP> |
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| All described methods are depicted in the schematics below. | All described methods are depicted in the schematics below. |
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| <WRAP center round info 90%> | <WRAP group center round box 95%> |
| | {{ :files:img_warning-line_b.png?nolink |}} |
| | <WRAP half column 13%> |
| | {{ :en:hw:08_safety-instructions_pseudo-ISO-7010-info.png?nolink |(!)}} |
| | </WRAP> |
| | <WRAP half column 83%> |
| | **Note:** \\ |
| The sensor features a 4-wire connection to improve the reliability of branched networks. However, it is possible to modify it for 3-wire connection by joining 1W (DATA) wires if needed. | The sensor features a 4-wire connection to improve the reliability of branched networks. However, it is possible to modify it for 3-wire connection by joining 1W (DATA) wires if needed. |
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| You can also short-circuit VCC and GND wires to run the sensor in parasite mode with communication through two wires. | You can also short-circuit VCC and GND wires to run the sensor in parasite mode with communication through two wires. |
| | </WRAP> |
| </WRAP> | </WRAP> |
| | |
| A compact [[https://www.unipi.technology/1-wire-hub-s-8-porty-p31|8-port 1-Wire hub]] features eight RJ45 ports and allows you to connect multiple 1-Wire thermometers or other sensors with the RJ45 connector. To connect the hub to a controller you can either use a suitable patch cord (on controllers with the RJ45 port) or the [[https://www.unipi.technology/kabelova-1-wire-redukce-rj45-3-pin-svorkovnice-p325|cable reduction]] (on controllers with the newer 3-pin screw terminal). | A compact [[https://www.unipi.technology/1-wire-hub-s-8-porty-p31|8-port 1-Wire hub]] features eight RJ45 ports and allows you to connect multiple 1-Wire thermometers or other sensors with the RJ45 connector. To connect the hub to a controller you can either use a suitable patch cord (on controllers with the RJ45 port) or the [[https://www.unipi.technology/kabelova-1-wire-redukce-rj45-3-pin-svorkovnice-p325|cable reduction]] (on controllers with the newer 3-pin screw terminal). |
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| <WRAP center round important 90%> | <WRAP group center round box 95%> |
| | {{ :files:img_warning-line_b.png?nolink |}} |
| | <WRAP half column 13%> |
| | {{ :en:hw:09_safety-instructions_pseudo-ISO-7010-attention.png?nolink |(!)}} |
| | </WRAP> |
| | <WRAP half column 83%> |
| | **Attention:** \\ |
| It is necessary to follow the correct port order when connecting devices to the hub! Port 1 must be always used as an input port, the remaining ports must not be skipped; otherwise, any devices connected after the skipped port would be cut off from the 1-Wire bus. | It is necessary to follow the correct port order when connecting devices to the hub! Port 1 must be always used as an input port, the remaining ports must not be skipped; otherwise, any devices connected after the skipped port would be cut off from the 1-Wire bus. |
| </WRAP> | </WRAP> |
| | </WRAP> |
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| {{:en:hw:hub_simple_eng.png?600|}} | {{:en:hw:hub_simple_eng.png?600|}} |
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| It is possible to create a chain of multiple hubs if an extensive network of 1-Wire sensors or devices is needed. When interconnecting two hubs the topology stays the same - Port 1 serves as an input while the output is located on the last port in order. | It is possible to create a chain of multiple hubs if an extensive network of 1-Wire sensors or devices is needed. When interconnecting two hubs the topology stays the same - Port 1 serves as an input while the output is located on the last port in order. |
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| <WRAP center round important 90%> | <WRAP group center round box 95%> |
| | {{ :files:img_warning-line_b.png?nolink |}} |
| | <WRAP half column 13%> |
| | {{ :en:hw:09_safety-instructions_pseudo-ISO-7010-attention.png?nolink |(!)}} |
| | </WRAP> |
| | <WRAP half column 83%> |
| | **Attention:** \\ |
| Any other 1-Wire device connected after the output port will be cut off from the bus! | Any other 1-Wire device connected after the output port will be cut off from the bus! |
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| </WRAP> | </WRAP> |
| | </WRAP> |
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| {{:en:hw:hubeng.png?600|}} | {{:en:hw:hubeng.png?600|}} |
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| <html><span class="kbBlueText">RJ45 connection</span></html> \\ | <html><span class="kbBlueText">RJ45 connection</span></html> \\ |
| Connection to RJ45-connector network cable is useful for star-shaped network topologies created from 1-Wire hubs. You can also use it to connect the sensor to Unipi 1.1 extension board, or to the older variants of Unipi Neuron controllers. | Connection to RJ45-connector network cable is useful for star-shaped network topologies created from 1-Wire hubs. You can also use it to connect the sensor to Unipi 1.1 extension board, or to the older variants of Unipi Neuron controllers. |
| All these sensors can be also connected to the [[https://www.unipi.technology/unipi-extension-xg18-p331|Unipi Extension xG18 module]]. Coloured connection scheme on the picture corresponds to the T568B connection. | All sensors with the DS18b20 chip and parasite power support can also be connected to the [[https://www.unipi.technology/unipi-extension-xg18-p331|Unipi Extension xG18 module]].. Coloured connection scheme on the picture corresponds to the T568B connection. |
| ;#; | ;#; |
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