485, communication lines and 12V power line with a cable line, okay?
Yes, the receiver / receiver does not communicate with the two lines. It must be able to communicate. If you supply electricity, should you use a low voltage direct current? If yes, yes, the cable can be brought up. Some of our network devices are cable powered. Such as the POE power supply mode: POE (Power Over Ethernet) refers to the existing Cat.5 Ethernet cabling infrastructure does not make any changes in the situation, for some IP based terminal (such as IP telephone, wireless LAN access point AP network camera, etc.) for the transmission of data signals at the same time, can also provide DC power supply technology for such a device.
Tolerable。 Look at distance metrics and speed indicators. Can also 12V two power lines, both power transmission and RS485 communication.
No, because the 485 line is susceptible to noise, the standard 1 of the RS-485 communication cable, the characteristic impedance of 120 ohm conductor 2*24AWG stranded tinned copper wire, PE insulated by aluminum foil / polyester composite with 100% + 90% coverage tinned copper wire covered with double shielding, independent grounding wire, with UL 2919 file.
