Urgently need expert guidance on fiber optic transmission issues! ! !
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For the field instruments, due to the large distance involved, 485 transmission is required; it is indeed necessary to use 485 for communication. However, because the distance is too great and the magnetic field strength is high, fiber optics are needed to cover this long distance. A 485-to-fiber optic conversion module is required in this case, and then, once the signal reaches the control room, it is converted back from fiber optics to 485 before being fed into the industrial computer, thereby achieving the desired outcome. Questions I would like to ask: 1. Is there any problem with this transmission method? 2. Has anyone ever done this before – converting an 485 signal to an optical fiber and then back to 485? Could someone please provide an example? 3. Is there a better solution? For example, by using other media for transmission or other methods. (The instrument itself does not have an optical fiber interface, so converting 485 to optical fiber is necessary.) 4. What are all the small accessories involved in this complete solution? Please use professional terms to point it out to me and provide a solution as well. Urgent! !
2 optical terminals will suffice 111111111111111111111111
There are specialized devices for connecting to the optical terminal; one connector costs 100 yuan, and once it’s connected, it’s done
There are various ways for remote transmission: 1. When the environment presents no constraints, fiber optic transmission is the best option, as it offers strong real-time performance, high security, and is not affected by electromagnetic interference； 2. Transmission is carried out via radio stations, offering real-time performance; however, the stations must be outside regulatory areas, otherwise an application is required and annual fees must be paid ； 3. Use GPRS for transmission; try to avoid transmitting real-time data. During holidays, high resource utilization leads to long delays ； Fibers come in two types: multi-mode and single-mode. Single-mode fibers are used for longer transmission distances. Configuration: 1. A pair of RS485 fiber transceivers, which must be of the same type as the fibers, that is, single-mode fibers require single-mode fiber transceivers ； 2. Two pairs of single-mode pigtails ； 3. Two fiber optic terminal boxes ； 4. The manufacturer that supplies the optical fiber is responsible for fiber splicing; otherwise, splicing a pair costs 40 to 80 yuan ； 5. Pay attention to the interface between the fiber optic cable and the fiber transceiver – there are square and round types; otherwise, they cannot be paired and will be ineffective.
Using optical fibers is possible; the configuration mentioned on the 4th floor covers everything. What’s needed now is a specific construction plan, which is quite simple
Thank you for your explanation, brother. I’ll inform the technical staff right away. The biggest concern is that they might not be able to handle it. Thank you so much! ! !