What is the maximum cable length for a Modbus RTU network?
Modbus RTU – how to interconnect Sentera devices
We recommend that the total cable length per segment does not exceed 1.000 m. (Total cable length = sum of the main network line and all branches).
Modbus RTU should follow a line topology, so avoid making branches on the main line. If branches are present, they should be kept as short as possible. The combined length of all branches should not exceed 20 m.
When the total cable length becomes too high, the Modbus RTU communication will be disturbed. To compensate these communication losses due to cable length, a Modbus repeater (e.g. DPOM-24-20) can be used to compensate cable length.
CO2 sensors with visual and audible alertToo high CO2 concentrations? Sentera CO2 sensors are now available with audible alert. On top of that, the green, yellow and red LED offer a clear, visual indication of the CO2 level. The supply voltage is 230 V or 24 V.>>>
Sentera provides innovative, easy-to-use control solutions for HVAC installations and ventilation systems. How to optimise your comfort, indoor air quality, safety and overall wellbeing? We have the answer!