Description
Teracom suggests a total cable length of up to 30 meters using UTP/FTP cables. Using the 1 meter RJ11 cables between these devices is well within this guideline and can help maintain signal integrity over the 1-Wire bus, particularly as RJ11 connectors are well-suited for low-speed data connections like those used in 1-Wire networks. This configuration allows for a simple and effective method to expand the 1-Wire network linearly.
The SPL2_RJ11 can be used to add one of the screwless terminal sensors to the end of network, or to wire these sensors and transmitters into an existing 1-Wire network, or other master device.. A list of the Teracom 1-Wire devices with an integrated RJ11 connectors can be found in the table below.
| Part Number | Description |
| TST103 | Digital Temperature Sensor |
| TSH206v3 | Digital Temperature and Humidity Sensor |
| TST200 | PT100 Transmitter |
| TSA200 | Current Loop Transmitter |
| TSV200-60i | 60V Voltage Input Transmitter |
| TSC200-15 | Galvanic Isolated Current Sensor |
| TSL200 | Ambient Light Sensor |
| TSP200 | Barometric Pressure Sensor |
Pinout of RJ-11 Connectors
 |
Pin | Description | UTP Wire Colour |  |
| 1 | 1-Wire Ground | White/Brown | ||
| 2 | 1-Wire Ground | White/Green | ||
| 3 | 1-Wire Data | Green | ||
| 4 | 1-Wire Ground | White/Orange | ||
| 5 | 1-Wire +VDD | Orange | ||
| 6 | 1-Wire +VDD | Brown |
1-Wire Network Linear Topology
Using the 1m, or 3m, RJ-11 cables with the 1-Wire Sensors and Transmitters with dual RJ-11 connectors allow you to create a Daisy-Chained Linear Topology. The max cable length, from the Master device to the Slave device at the further point, should be less than 30m. With the limitations of the Teracom Ethernet and GSM/LTE I/O modules of a maximum of 4 or 8 1-Wire sensors, you would not exceed this, even with the 3m cables.
1-Wire Network Stubbed Topology
Using the 1m, or 3m, RJ-11 cables with a separate 1-Wire Network would allow you to create a Stubbed Network topology. This can be achieve by using the SPL2_RJ11 cable to the 1m, or 3m RJ-11 cables. The stubs can then be connected to one of the 1-Wire sensors with screwless terminals to a network with RJ-11 sensors.
