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en:hw:05-1-wire [2019/10/24 12:34] jan_kozak |
en:hw:05-1-wire [2020/06/16 08:39] avsetula |
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- | ======%hide 1-Wire Devices ===== | + | ====== 1-Wire bus ====== |
- | ====== 1-Wire ====== | + | 1-Wire is a communication bus system designed for low-speed data transmission, signalling and power through a single wire. |
- | 1-Wire is a device communications bus system that provides low-speed data, signaling, and power over a single conductor. | + | |
- | UniPi tries to maximize the reliability of the whole network by serializing the bus as much as possible. This is achieved by using 4 wires (GND, VCC, Data-IN, Data-OUT). This four-wire design is used in our 1Wire temperature sensors and 8port hubs. | + | 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 thermometers ===== | + | |
+ | ===== 1-Wire temperature sensors ===== | ||
{{ :en:hw:03-1wire:xds18b20.jpg?direct&100|}} | {{ :en:hw:03-1wire:xds18b20.jpg?direct&100|}} | ||
- | The DS18B20 is widely used [[en:automation:02-glossary:1wire-hidden|1-Wire]] sensor in TO-92 package. | + | 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 | ||
+ | * Temperature measuring range: -55°C / +125°C | ||
+ | * Accuracy: ±0.5°C (-10°C / +85°C range) | ||
+ | * 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 ==== | ||
+ | [[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&direct |}} | ||
+ | |||
+ | 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 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/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 === | ||
+ | == Connecting a single 1-Wire temp. sensors to a Unipi controller == | ||
+ | |||
+ | {{:en:hw:1wire_temp_eng.png?400|}} | ||
+ | |||
+ | == Connecting a pair of 1-Wire temp. sensors to an Unipi controller using the RJ45 splitter == | ||
+ | |||
+ | {{:en:hw:splittereng.png?400|}} | ||
- | * Power supply range is 3.0V to 5.5V | + | == Connecting multiple sensors using the 1-Wire hub == |
- | * Measures temperatures from -55°C to +125°C (-67°F to +257°F) | + | |
- | * ±0.5°C accuracy from -10°C to +85°C | + | |
- | * Converts 12-bit temperature to digital word in 750 ms (max.) | + | |
- | * Can be powered from data l | + | |
- | ==== UniPi 1-wire temperature sensor ==== | + | {{:en:hw:hub_simple_eng.png?400|}} |
- | The [[https://www.unipi.technology/1-wire-temperature-sensor-p63?categoryId=3|Unipi 1-Wire temperature sensor]] is equipped with RJ45 connector, so it is easy to connect to the older variants of [[en:hw:02-neuron|Unipi Neuron]] controllers or the [[en:hw:06-1-wire-hub|UniPi 1-Wire hub]]. The newer variant of Unipi Neu | + | |
- | ron PLCs and the Unipi Axon product line both use a 3-wire screw terminal which** does not support the RJ45 connector**. To connect the 1-Wire temperature sensor to Axon or Neuron controllers, you can use two methods | + | == Creating a network of 1-Wire sensors using multiple 1-Wire hubs == |
- | - cut off the sensor's RJ45 connector, put ferrules on the conductors and screw them into a screw terminal connector included in the controller's package following [[https://kb.unipi.technology/_media/en:automation:02-glossary:infografika_axon.png|this pin-out scheme]] | + | {{:en:hw:hubeng.png?400|}} |
- | - use a [[https://www.unipi.technology/rj45-3-pin-1-wire-cable-reduction-p325|cable reduction]] | + | |
- | The sensor introduces a 4 wire connection for better reliability of larger network, which can be converted to 3 wire version for simplification. | + | ==== 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]]) 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. | ||
- | {{ :en:hw:03-1wire:1-wire-temperature-meter.png?direct |}} | + | === Connection options ==== |
- | ==== Connecting a single 1-Wire sensor to the Unipi controller ==== | + | == 3-wire screw terminal == |
- | {{:en:hw:1wire_temp_eng.png?600|}} | + | This option is suited for cases where you need to connect only a single sensor to Unipi Axon or Unipi Neuron controller |
- | ==== Connecting a pair of 1-Wire sensors to the Unipi controller via RJ45 splitter ==== | + | {{:cs:hw:senzor_dratovani_3pin_2.png?100|}} |
- | {{:en:hw:splittereng.png?600|}} | + | |
- | ==== Connecting multiple 1-Wire sensors through a 1-Wire hub==== | + | ===== RJ45 connector ===== |
- | {{:en:hw:hub_simple_eng.png?600|}} | + | 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/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 multiple sensors using the [[https://www.unipi.technology/1-wire-hub-s-8-porty-p31|8-port hub]]. | ||
- | ==== Creating a multi-hub extensive network of 1-Wire sensors==== | + | {{:cs:hw:senzor_dratovani_rj45.png?200| }} |
- | {{:en:hw:hubeng.png?600 | + | {{ :cs:hw:rj45-pinout_1-wire.png?nolink&400|}} |
- | |}} | + |