12 063
правки
RS-485: Wiring and Connection/en: различия между версиями
Новая страница: «It is necessary to use a pair twist cable: the RS-485 data (lines A and B) must form a twisted pair. If the same cable is used to power the devices, it is necessa…»
(Новая страница: «'''Wire A is connected to terminal a on all devices, wire B is always connected to B.'''») |
(Новая страница: «It is necessary to use a pair twist cable: the RS-485 data (lines A and B) must form a twisted pair. If the same cable is used to power the devices, it is necessa…») |
||
| Строка 11: | Строка 11: | ||
'''Wire A is connected to terminal a on all devices, wire B is always connected to B.''' | '''Wire A is connected to terminal a on all devices, wire B is always connected to B.''' | ||
It is necessary to use a pair twist cable: the RS-485 data (lines A and B) must form a twisted pair. If the same cable is used to power the devices, it is necessary to pay attention to the cross section of the conductors: a voltage drop on a long line can lead to the fact that the devices will not work. Finally, you should choose a shielded cable. | |||
При монтаже удобно использовать кабель с гибкими жилами. Примеры приведены ниже: | При монтаже удобно использовать кабель с гибкими жилами. Примеры приведены ниже: | ||