Wiren Board 6: RS485-ISO extension module (WBE2-I-RS485-ISO)

Материал из Wiren Board
Это утверждённая версия страницы. Она же — наиболее свежая версия.
Другие языки:

Module with galvanically isolated RS-485 interface. Insulation voltage: 1.5 kV. Speed up to 1 Mbit/s.

Module contains 120 Ohm terminator between lines A and B. To enable it, close the jumper between termination contacts on the top edge of the board.

Pinout

WBE2-I-RS485-ISO reverse side
WBE2-I-RS485-ISO front side

RS485 signals are output to the terminals of the O1-O3 extension module.

Terminal Function
O1 A (D+)
O2 B (D-)
O3 Isolated GND (Common, C)

Configuration

Configuration is done in the web interface. Section Configs => Hardware Modules Configuration. Next, in Internal slot 1 or in Internal slot 2, select "WBE2-I-RS485-ISO: Isolated RS-485 interface module" and click Save.


The device is detected immediately, no reboot is required.

Operation

The port is available in the system as

  • /dev/ttyMOD1 - when installed in the first slot for extension module (MOD1)
  • /dev/ttyMOD2 - when installed in the second slot for extension module (MOD2)


For operation, you must disable hardware flow control. Additional port configuration as RS-485 is not required.