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en:hw:05-1-wire [2020/03/05 09:21] jan_kozak |
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| - | ======%hide 1-Wire bus ====== | + | ====== 1-Wire bus ====== |
| 1-Wire is a communication bus system designed for low-speed data transmission, signalling and power through a single wire. | 1-Wire is a communication bus system designed for low-speed data transmission, signalling and power through a single wire. | ||
| Unipi 1-Wire products are designed for reliability and serialization. For this purpose, Unipi 1-Wire sensors and hubs use a four-wire setup (GND, VCC, DATA-IN, DATA-OUT) | Unipi 1-Wire products are designed for reliability and serialization. For this purpose, Unipi 1-Wire sensors and hubs use a four-wire setup (GND, VCC, DATA-IN, DATA-OUT) | ||
| + | ===== 1-Wire temperature sensors ===== | ||
| {{ :en:hw:03-1wire:xds18b20.jpg?direct&100|}} | {{ :en:hw:03-1wire:xds18b20.jpg?direct&100|}} | ||
| - | Unipi 1-Wire temperature sensors are based on a widely used DS18B20 [[en:automation:02-glossary:1wire-hidden|1-Wire]] sensor encased in a TO-92 metal probe. The sensor converts 12-bit temperature values to a digital signal (750 ms max. delay) | + | Unipi 1-Wire temperature sensors are based on a widely used DS18B20 [[en:automation:02-glossary:1wire-hidden|1-Wire]] sensor encased in a TO-92 metal probe. |
| * Voltage range: 3.0V - 5.5V | * Voltage range: 3.0V - 5.5V | ||
| * Temperature measuring range: -55°C / +125°C | * Temperature measuring range: -55°C / +125°C | ||
| * Accuracy: ±0.5°C (-10°C / +85°C range) | * Accuracy: ±0.5°C (-10°C / +85°C range) | ||
| - | * Can be powered by DATA 1 wire | + | * The sensor converts 12-bit temperature values to a digital signal (750 ms max. delay) |
| + | * Can be powered by DATA wire (parasitic mode) | ||
| ==== Unipi 1-wire temperature sensor ==== | ==== Unipi 1-wire temperature sensor ==== | ||
| - | [[https://www.unipi.technology/1-wire-teplotni-senzor-p63|Unipi 1-Wire temperature sensor]] is available in four cable lengths, and features an RJ45 connector. It can be connected to older [[https://www.unipi.technology/cs/neuron-c2|Unipi Neuron]] controllers with RJ45 1-Wire port, or the [[https://www.unipi.technology/1-wire-hub-s-8-porty-p31| Unipi 8-port 1-Wire hub]]. The latest Unipi Neuron design and the entire Unipi Axon line are equipped with 3-wire screw terminals, for which the **RJ45 connector cannot be used**. | + | [[https://www.unipi.technology/1-wire-teplotni-senzor-p63|Unipi 1-Wire temperature sensor]] is available in four cable lengths, and features an RJ45 connector. It can be connected to older [[https://www.unipi.technology/cs/neuron-c2|Unipi Neuron]] controllers with RJ45 1-Wire port, or the [[https://www.unipi.technology/cables-reductions-hubs-c41| Unipi 8-port 1-Wire hub]]. The latest Unipi Neuron design and the entire Unipi Axon line are equipped with 3-wire screw terminals, for which the **RJ45 connector cannot be used**. |
| - | {{ :en:hw:03-1wire:1-wire-temperature-meter.png?400 |}} | + | {{ :en:hw:03-1wire:1-wire-temperature-meter.png?400&direct |}} |
| If you need to connect the sensor to a controller with the 3-wire terminal, there are two methods you can do so: | If you need to connect the sensor to a controller with the 3-wire terminal, there are two methods you can do so: | ||
| - | - cut off the sensor's RJ45 connector, put ferrules onto the wires and and wire them into the 3-wire terminal according to [[https://kb.unipi.technology/_media/en:automation:02-glossary:infografika_axon.png|this schematic]] | + | - cut off the sensor's RJ45 connector, put ferrules onto the wires and wire them into the 3-wire terminal according to [[https://kb.unipi.technology/_media/en:automation:02-glossary:infografika_axon_2.png|this schematic]] |
| - | - use the [[https://www.unipi.technology/kabelova-1-wire-redukce-rj45-3-pin-svorkovnice-p325|cable reduction]] | + | - use the [[https://www.unipi.technology/cables-reductions-hubs-c41|cable reduction and Unipi 1-Wire hubu]] |
| + | |||
| + | The sensor uses a four-wire connection for better reliability of branched networks. If needed, it can be modified for a three-wire connection. | ||
| === Possible connections === | === Possible connections === | ||
| Line 28: | Line 32: | ||
| {{:en:hw:1wire_temp_eng.png?400|}} | {{:en:hw:1wire_temp_eng.png?400|}} | ||
| - | == Connecting a pair of 1-Wire temp. sensors to a Unipi controller using the RJ45 splitter == | + | == Connecting a pair of 1-Wire temp. sensors to an Unipi controller using the RJ45 splitter == |
| {{:en:hw:splittereng.png?400|}} | {{:en:hw:splittereng.png?400|}} | ||
| Line 40: | Line 44: | ||
| ==== 1W-T-IB2 / 1W-TH-IB2 on-wall temperature and/or humidity sensors ==== | ==== 1W-T-IB2 / 1W-TH-IB2 on-wall temperature and/or humidity sensors ==== | ||
| - | Unipi product listing also contains the 1W-T/H-IB2 compact on-wall sensors for measuring temperature ([[https://www.unipi.technology/nastenny-teplotni-senzor-1w-t-ib2-p350|1W-T-IB2] model]) or temperature and relative air humidity ([[https://www.unipi.technology/nastenny-teplotni-vlhkostni-senzor-1w-th-ib2-p351|1W-TH-IB2]]) in building interiors. The sensors feature a four-wire screw terminal and can be modified for connection both to 3-wire connector and the RJ45 connector. | + | Unipi product listing also contains the 1W-T/H-IB2 compact on-wall sensors for measuring temperature ([[https://www.unipi.technology/nastenny-teplotni-senzor-1w-t-ib2-p350|1W-T-IB2]]) or temperature and relative air humidity ([[https://www.unipi.technology/nastenny-teplotni-vlhkostni-senzor-1w-th-ib2-p351|1W-TH-IB2]]) in building interiors. The sensors feature a four-wire screw terminal and can be modified for connection both to 3-wire connector and the RJ45 connector. |
| === Connection options ==== | === Connection options ==== | ||
| Line 47: | Line 51: | ||
| This option is suited for cases where you need to connect only a single sensor to Unipi Axon or Unipi Neuron controller | This option is suited for cases where you need to connect only a single sensor to Unipi Axon or Unipi Neuron controller | ||
| - | {{:cs:hw:senzor_dratovani_3pin.png?100|}} | + | {{:cs:hw:senzor_dratovani_3pin_2.png?100|}} |
| - | == RJ45 connector == | + | ===== RJ45 connector ===== |
| Modification for the RJ45 connector is useful in three major cases: | Modification for the RJ45 connector is useful in three major cases: | ||
| - | - you need to connect a pair of sensors to Unipi Neuron or Unipi Axon controller using the [[https://www.unipi.technology/cs/1-wire-2-port-splitter-p327|2-port splitter]] | + | - you need to connect a pair of sensors to Unipi Neuron or Unipi Axon controller using the [[https://www.unipi.technology/1-wire-2-port-splitter-p327|2-port splitter]] |
| - you need to connect a single sensor to an Unipi Neuron with the older RJ45 1-Wire port. | - you need to connect a single sensor to an Unipi Neuron with the older RJ45 1-Wire port. | ||
| - you need to connect multiple sensors using the [[https://www.unipi.technology/1-wire-hub-s-8-porty-p31|8-port hub]]. | - you need to connect multiple sensors using the [[https://www.unipi.technology/1-wire-hub-s-8-porty-p31|8-port hub]]. | ||
| - | {{:cs:hw:senzor_dratovani_rj45.png?200|}} | + | {{:cs:hw:senzor_dratovani_rj45.png?200| }} |
| + | {{ :cs:hw:rj45-pinout_1-wire.png?nolink&400|}} | ||
