#RS 485 CABLE SPECIFICATIONS DRIVERS#

For example, Belden 3105A cable can be specified, but different types of cable with equivalent characteristics canВ be used. The cable to be used is a shielded twisted pair (telephone type). A higher number introduces excessiveВ delays in the communication system. The maximum number ofВ repeaters that should be serially connected is 3. Using a repeater, the main cableВ is divided into different segments, each of which can be up to 700 m in length andВ connect 32 devices (this number includes the repeaters). Moreover, each segment of the network must be connected to the terminator.

#RS 485 CABLE SPECIFICATIONS DRIVERS#

If the distance segment exceeds 1200 m or the number of drivers in the segment more than 32 pieces, you should use a repeater (repeater), to create the next segment. In order to increase the extent of the Modbus network, repeaters can be used andВ signal amplifying and regenerating devices provided with two communication portsВ that transfer to each what they receive from the other. The maximum number of devices thatВ can be connected to a main cable is 32, including the Master. The main cable must be no longer than 700 m! This distance does not include theВ branches (which must nevertheless be short). Maximum distance and maximum number of devices

Network with Bus structureДЇigure 2 вЂ“ Examples of incorrect BusВ connectionsДЈ. The branches must be no longer than 1200 m! Longer branches could cause signalВ reflections and generate disturbances and consequent errors in the reception ofВ data.ДЇigure 1 shows an example of a correct Bus connection. The RS485 system used for ModbusВ communication provides a main cable (Bus or backbone), to which all the devices haveВ to be connected with branches (also known as stubs) that are as short as possible. Unlike what happens in many energy distribution systems, the manner in which theВ devices are connected in parallel is important. The communication port on theВ Master device, whatever it is, has two terminals that correspond to A and B. This makes it easier to identify cabling errors. In order to avoid errors whenВ many devices are connected, cables of the same colour should be used for all theВ connections to the terminals A and cables of the same colour should be used for allВ the connections to the terminals B of the various devices (e.g. Example Shielded, armoured, unarmoured, double core, etc.Inverting the вЂAвЂ™ and вЂBвЂ™ connections of aВ device does not only prevent it from communicating but may also stop the entire communicationВ system from working owing to incorrect direct (polarisation) voltage foundВ on the terminals of the incorrectly connected device. The RS-485 standard allows for long cabling distances in electrically noisy environments and can support multiple devices on the same bus. RS-485 is an industrial specification that defines the electrical interface and physical layer for point-to-point communication of electrical devices. The cable standard specifies performance of up to 250 MHz, compared to 100 MHz for Cat 5 and Cat 5e. mm 2core cable, OFC cables, etc.Д¬ategory 6 cable (Cat 6), is a standardized twisted pair cable for Ethernet and other network physical layers that is backward compatible with the Category 5/5e and Category 3 cable standards.

mm single core cable, Sense Signal вЂ“ 1.5 sq. We have CAT-6 вЂ“ Armoured, CAT-6 вЂ“ Normal, CAT-6 вЂ“ Polycab, CAT-6 вЂ“ Secures, CAT-6 вЂ“ Unarmoured, CAT-6 Cable вЂ“ Shielded, RS-485 Cable вЂ“ 2 Core, RS-485 Cable вЂ“ 4 Core, R-Y-B-N вЂ“ 1 sq. We also provide the cables that are required for the connections. Although we are not manufacturing the cables, to give a complete solar communication solution to our clients we provide RS485, CAT6, etc.

Rs 485 cable specifications