Those are the FAQs
According to our many years of experience and a lot of feedback from customers, the following conservative recommendation can be made:
- maximum cable length 50 -120meters
- number of 1-Wire devices no more than 20 -22 pieces
- as linear a topology as possible without T-junctions
The topology in particular plays a major role. If possible, it should be installed in a linear topology. The linear topology can be compared like pearls on a pearl necklace. The data line should be laid from one device to the next without T-joints.
Furthermore, the type of cable used can also be mentioned here. We recommend for the cabling
CAT5 or CAT6 network cable. It is also possible to use J-Y(St)Y telephone cables and KNX cables. With CAT5 versus CAT7 cables, longer cable runs are possible.
With twisted pair cables, a longer connection length can be achieved in an undisturbed environment, as the capacitive bus load is lower. A total length of 50 meters and more can be easily achieved without additional measures.
In disturbed, commercial and industrial environments, the cable should always be shielded in order to increase the "robustness" or interference sensitivity of the system.
Probably the network had already reached its maximum size before the additional sensor. The additional sensor now causes effects that can only be eliminated by splitting the network into two 1-Wire networks.
The ECO 10 is the successor of the very successful 1-Wire Controller 1. The ECO 10 now has the new 1-Wire functions, which are called Auto-E-Connect at ESERA.
The ECO 10 is also the technically newer device compared to the 1-Wire Controller 1.
You can connect a 1-Wire Hub to the Loxone controller.
The three tasks of the 1-Wire Hub are:
Unfortunately no, the 1-Wire Hub has three bus connection terminals, but they are not separate bus segments. The terminals are internally routed together. This means that the 1-Wire data lines of all three terminals are connected to the input terminal without modification.
The three functions of the 1-Wire Hub are:
The 1-Wire controllers and ECO controllers are designed and limited to 30 1-Wire devices.
According to our experience the max. number of 30 fits well to the most used network size. We have found that most installations are set up with 10 - 24 sensors.
A technical reason for the layout is that the 1-Wire controller, unlike most other 1-Wire masters, can deliver new data from all sensors very quickly and to this end, it outputs data very often. With default settings all sensors are read in a 2-3 second cycle.
The max. number of 30 is therefore a good compromise between the number of read cycles and the number of sensors.
We are happy to check or repair the items you bought from us for you.
Please note our terms and conditions (GTC) for the processing of repairs or for the inspection of devices.
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After you receive data from the eBus coupler, the setting is not entirely wrong and we can rule out a defect in the bus coupler with a high degree of probability.
It can have two causes:
On the configuration of ebusd. The USB interface is configured with ebusd by default with a latency of 0.
When configuring, you must also transfer a higher latency time. Please refer to the ebusd software manual for further details.
Interestingly, ebusd has a default latency of 50ms for ETH applications. We assume that the value 0 is an error. However, you can configure the latency time when starting the service. Please refer to the ebusd documentation for more details.
If you supply the bus coupler via a power pack, depending on the type of power pack, problems may arise if you have not grounded the minus output voltage. In other words, connect the yellow/green connection to the negative side of the power supply.
Disturbances often occur with DIN rail power supplies in particular, since the power supplies are intended for machines in which the negative voltage is always grounded and EMC interference is derived from this.