Modbus-RTU/ASCII
X2 - Modbus Technical Documentation for RTU/ASCII communication
Communication specifications Modbus RTU/ASCII
- RS485 2-wire MODBUS standard in accordance with EIA/TIA 485
- Slave type of communication
- Supports up to 127 nodes on one network
- Galvanic isolated bus connection
- LED indicators
- Selectable transmission types:
- RTU with CRC16 checksum
- ASCII with LRC checksum
- Baud rates: 4800, 9600, 19200, 38400
- Parity: No parity, odd or even parity.
Standards
| Communication standard: | Modbus (www.modbus.org) |
| Default setting: | 19200 Baud rate, RTU 8 data bits, 1 even parity bit, 1 stop bit |
| Communication speed: | 4800, 9600, 19200, 38400 |
| Protocol: | Modbus RTU with CRC16 checksum, Modus ASCII with LRC checksum |
| Parity – stop bit: | no parity – 2 stop, even parity or odd parity – 1 stop no parity – 1 stop (RTU mode only) |
Documentation
Engineering Manual:
Application Note:
Archive
Old Engineering Manual:
Old Application Note: