???? ????? ?????? ??? ??????? RS-485

???? ????? ?????? ??? ??????? RS-485

????? RS485 ??????? ????? ??????? ?????????? ?????? ??????? ?????????? ?? ???? ???? ?????? ????? ??????? ??? ??????? ????? ?????? ?? ???? ?????? ?????? . ???????? ??????? RS-485? ?? ????? ??? ????? ????? ????? ??????? ????? ?????? ??? ??? ?? ??????? ????????? ?? ??? ????? ??? ??? ???????? ????? ??? ????????? ???? ??????? ??????????? ?? ?????? ????????? ??????. ???? ????? ????? RS-485 ?????? ??????? ??? ?????? ??? ??????? ?? ???? ????? ???? ????? ?????.

?? ?? ????? RS-485 ???????? ??? ??????? ????? ??? ??????? ??? ???????? ?? ???? ???? ????? ??????.

1. ?? ??? ?? ??????? ???? ??? ???????? ?????? ??? 485?

??? ??????? ?????? ????? ?????? ????? ?? ??? RVSP. ?????? ??????? ??? ???????? ??? ??? ?? ??????? 485 ???? ??????? ???????. ????? ??????? ??? ???????? ?? ????? ????? ??????? ??? ??? ??????? 485? ??????? ?????? ???????? ??? ????? ??????? ?????? ??? ???? ???????.

2. ?? ??? ??????? ???? ???? ??????? ?????? 485?

???? ???? ???? ?????? 485 ???? ???????? ????? ????? 128 ?????? ???????.

?? ???? ?? ???? ???? ?????? 485 ??? 128 ??????. ?????? ??? ????? ??? ???? ??????? ?? ???? 485 ????? ????? ???? 485? ?????? ??? ??????? ????? ??????? ??? ?????? ??????. ??????? ???? ????? ??????? ???? ????? ????? 485: 32 ????? ?128 ????? ?256 ????.

???????? ??? ???? ?????? ?? ?? ??? ?????? ??? ?????? ??????? ??????? ?? ??????. ????? ???? ????? ???????? ?????? ???? ??? ????????? ??? ??? ?????? ??????? ?????? ??????? ???? ??????? ???? ???? ?????? ????? ?? (?? ???? ???????? ???????)? ????? ?????? ??? ????? ???? ?? ???????? ??? ?? ??? ????? ??? ????? ????? ??????.

3. ????? ??? ????? RS-485?

???? ???? ??????? ?????????? 485 ???? ????? ????? ???? ??? ????? ??????? ?????? ??? -7 ???? ?+12 ????. ??? ????? ??? ??????? ??????? ???????? ??? ????? ????? ??????? ????. ???? ????? ????? ??????? ??? ????? ??? ????? ??????? ???????. ?? ????? ??????? ?????? ?? ????? ????? ??????? ??????? ???? ??????? ??? ????? 485 ??? ?????? ????? ????????? ????????? ?????? ?? ????? ??????? ?? ??????? ?????? ???? ????? ?? ???? ?????.

4. ??? ????? ????? ?? ????? RS-485?

??? ?? ???? ????? RS-485 ????? ??? ??????? ?? ????? ??????? ??? ????? ????? ?????? ??????? ?????????. ????? ????? ???? ????? ??????? ??? ???? ??????? ??? ?? ???? ?? ??????? ??????? ??? ?? ??????? ???? ??????? ?? ?? ??????? ??. ?????? ?????? ?????? ????? ??????.

5. ?? ???? ???? ????? ??? ?????? ??????? ??????? ??? ???? 485?

?? ???? ?????? ????? ?????? ??? ??? ?????? ?????? ??? ???? ??????? ?? ????. ???? ?? ???? ??????? ????? ????? ?????? ????? ???????? ????????. ???? ?? ???? ???? ????? ????? ????? ??????.

6. ?? ?? ???? ??? ????? ?????? ????? ??? ???? 485?

???? ???? ?? ???? ?????? ?????? ???????. ??? ????? ?????? ????? ????? 485 300 ???? ??? ????? ?????? ????? ?? ????? ?????? ????? 485. ????? ????? ???? ??? ??????? ??? ???? 485 ??????. ??? ????? ???? ??? ??????? ?????? (???? ?? 22 ?????? ?????)? ??? ???? ?????? ?????? ???????? ??? ????? ???????? ??????? ????? ??? ????? ??? ????? ???? 485. ????? ????? ?????? ???????? 120 ??? ?????? ????? ?? ???????: ???? ????? ?????? ???????? 120 ??? ?????? ????? ?????? ????? ??????? ??????? ??? ???? ?????? ??? ?? ???? ?????. ??? ???? ?????? ????? ?? ??????? ???? ?????? ???????? 120 ??? ??? ????? ?????????. ????? ????? ?????? ???????? 120 ??? ????? ?? ???? ????? ???? ?????? ?? ????? DIP. ??? ????? ?? ???? ??? ?? ??? ?????? ???????? 120 ??? ?????? ??? ???? ??? ????? ???? ?????? ??? ??? ???????.

7. ?? ???? ??? ???? ????? ?? ?? ???? ???? ??? ??????? ????? ????? ????????

(1) ???? ???? ????? ????? ???? STP-120Ω (?? RS485 ?CAN) ??? ???? 20 AWG? ??? ?????? ??????? ????? 7.7 ??. ????? ????????? ???????? ????? ????????? ???????? ???????? ??????. ??? ?????????? ??? ????? ??? ???? ???? ???????.

(2) ???? ???? ???? ?? ??? STP-120Ω ?? ??? ????? (?? RS485 ?CAN)? ??? ???? 18 AWG? ???? ??????? ????? 8.2 ??. ????? ????????? ???????? ????? ????????? ???????? ???????? ??????. ??? ?????????? ??? ????? ??? ???? ???? ???????.

(3) ???? ???? ????? ????? ASTP-120Ω (?? RS485 ?CAN) ??? ???? 18 AWG? ???? ??????? ????? 12.3 ??. ??????? ?? ??????? ??? ??????? ??????? ?? ??????? ???? ???????? ?? ???? ????? ????? ?? ??????? ??????? ????????. ??? ?????????? ????? ?????? ???? ???? ??????? ?????? ??? ???? ?????? ???????.

???? ??? ?????????? ?????????? ???????????? ??? ?? ????? ?????? ??? ?????? ??? ???? ???? ????? ???? ??????????? ??????????? ???????? ??? ??????.

????? ?? ??? ??????? ??? ?? ??? ???? ????? ???? ????????? ???? ????? ??????? ??????? ???????? ??????? ??? ?? ?? ????? ????.

????? ?? ????? ???? ?????? ?????? ?? ???????? ??????? ???????? ??? ????? ?????????? ????? ?? ?????? ?? ??? ????? ????? ?? ????? ?????? ??????. ?? ?????? ?????? ??????? ?????? ????? ?? ??????? ???? ??????. ???? ????? ???? ??????????? ??????????? ???????? ?? ????? ??????.

???? ???? ????? ???? ??????????? ??????????? ???????? ?????? ??? ??? ????? ???????? ????? ??????? ?????? ?????? ???? ????? ?????????.

??????? ???????? ??????? ?????? ?????? ???????? ?? ?????? ??? ???? ????? ?? ???? ?????????.