Train HDLC synchronous communication working mode

HDLC protocol is a common protocol for train communication. In order to reduce the number of signal lines, NRZI coding format is usually used.

The following diagram shows half-duplex HDLC communication based on RS-485 bus for train TCMS system or TMS system:

Some trains will also use RS-422 full-duplex mode, as shown in the following figure:

RELATED PRODUCTS

HDLC-TCMS TCN Protocol Converter

Synchronous HDLC protocol converter for trains
2x Ethernet interfaces
Multiple RS-232/422/485 serial ports or CAN port
Serial port support HDLC protocol, UART mode
Realize serial port, CAN port, Ethernet port conversion
Industrial grade wide temperature, complete isolation protection

HDLC-UART Isolate Embedded Module

Train Embedded Communication Module
2x RS-485/422 synchronous/asynchronous serial ports with isolation
1x TTL/CMOS synchronous and asynchronous serial port
All serial ports support synchronous HDLC protocol and asynchronous UART.
Realize HDLC, UART conversion each other
+5V power supply, 2.54mm pin interface

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