You need to check the resistance of the cat 5 cable but the suggestion to use capacitors at each load and regulate remotely is a must (you'll lose a couple of volts in the cable). The primary occasion for using RS485 cables is to create a network where multiple devices, such as sensors, controllers, or instruments, must communicate over relatively long distances. The rs485 shielded cable is known for supporting multi-point communication, meaning multiple devices can be connected to the same network, facilitating versatile and complex setups. Moreover, RS485 cables are often utilized in systems that require multidrop configurations, where multiple devices share the same communication bus. For fixed laying Maximum shielding capacity in accordance with EMC requirements, Cable for Modbus bus systems, SUCOnet P, Modulink P, VariNet-P, Dry and damp environments, Suitable for various bus systems based on RS485 / RS422. A CAT6 cable can theoretically carry data for 100m but after 80m, there would be signal attenuation and it would be impractical. In fact, there is no such thing as an RS485 cable since RS485 is a protocol for serial communication (like between inverter and Zero export device) and Ethernet is a protocol for carrying internet data (between router and inverter) whereas CAT6 is a cable standard.

So 80m is the practical limit for CAT6 cables. We recommend FTDI cables as they are the best quality. Here they are listed on the official FTDI site. Note that the Waveshare industrial RS485 is also globally available and uses an FTDI chip. It is better to educate oneself on RS485 and Ethernet because you would be facing customers in the networking field and very familiar with these terms. We use 2 pair telephone cable for RS485 communication up to 1200 metres. Furthermore, there are plenum-rated RS-485 cables designed for use in building plenum spaces. Plenum spaces are air-handling spaces typically found in commercial buildings. RS485 cables serve a crucial role in various industrial and commercial applications. In summary, rs-485 cable, along with its 5-pair and rs485 to usb converters, plays a crucial role in enhancing the connectivity and flexibility of various control and measurement systems by enabling them to communicate seamlessly with modern computing technology. With features like these, the rs485 serial cable is a reliable choice for applications requiring robust and long-distance data transmission in challenging environments, such as industrial automation and building control systems. An RS485 cable can carry data upto 4000ft (or 1.2km) @ 100kbps as shown below.

The cables create reliable and efficient communication networks, ensuring seamless data exchange between devices over extended distances. No. Cat 5e-UTP (unshielded twisted pair) which may work over shorter distances in less demanding applications with low EMI noise levels. The most common cable type is Cat 5e-UTP (unshielded twisted pair) which may work over shorter distances in less demanding applications with low EMI noise levels. 2 wires is all you need to make it work. QUICK TIP-If you are encountering noise or irregular or abnormal problems with a Modbus serial link, the problem is likely related to grounding, incorrect shielding, or wiring power wires next to Modbus wiring. But these are signal wires and the network always requires a return path. The shield works as a "drain" for any noise that could be picked up by the RS485 network and "drain" it to ground. No matter the devices, it is always good on real site installation to use a shielded cable, with 18-22AWG wiring and the shield connected ONLY to one end of the line. I have never been a fan of close loop communication and prefer to use a shunt and configure the inverter to stop at a set voltage.

After connecting as for point B, in the Settings it is possible to define a name for the device, and if the reading periodicity is less than 250 minutes, you can set an interval of hours in which the reading is not carried out / transmitted (for example you can disable the night). Any other way of connecting the devices together is not recommended as it might cause communication issues or damage to the overall system. A small battery bank increases the chances of large swings in battery SOC which can cause cell voltage deviations. Viewing individual cell voltages is necessary when troubleshooting. No, There may be interference from the high voltages and currents present on the mains wires, and if there is any insulation fault, arcing, etc. on the mains wires, it could put dangerous voltages on the low-voltage RS485 network cable. We trickle charge a battery pack at the end of our RS485 run so that peak loads are not a problem and the 25mA we put through the cable is sufficient on average to power our load.