Ebyte E831-RTU Series, User Manual

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Chengdu Ebyte Electronic Technology Co.,Ltd. E831-RTU(8080T-485) User
Manual
2
Copyright ©2012–2022
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
Contents
Disclaimer............................................................................................................................................................................................................... 3
Features....................................................................................................................................................................................................................4
1 Quick Start............................................................................................................................................................................................................4
1.1 Port connection..................................................................................................................................................................................................4
1.1.1 RS485 connection............................................................................................................................................................................................4
1.1.2 Digital input connection..................................................................................................................................................................................5
1.1.3 Digital output (NPN transistor open collector output ) connection................................................................................................................ 5
1.2 Simple to use...................................................................................................................................................................................................... 5
1.2.1 RS485 bus control...........................................................................................................................................................................................5
2 Product introduction ...........................................................................................................................................................................................7
2.1 Basic parameters.............................................................................................................................................................................................. 8
2.2 Dimensions and interface description............................................................................................................................................................ 8
2.3 Instruction reset description ......................................................................................................................................................................... 12
3 Modbus...............................................................................................................................................................................................................12
3.1 Modbus address table.................................................................................................................................................................................... 12
3.2 Modbus address table.................................................................................................................................................................................... 14
3.3 RS485 serial port baud rate code table........................................................................................................................................................ 15
3.4 RS485 serial port check digit value table......................................................................................................................................................15
3.5 Configure parameters through the host computer...................................................................................................................................... 15
4. Product Function...............................................................................................................................................................................................16
4.1 Mode selection................................................................................................................................................................................................. 16
4.2 IO basic functions............................................................................................................................................................................................16
4.2.1 Switch DO output...........................................................................................................................................................................................16
4.2.2 Read switch DI input......................................................................................................................................................................................17
4.3 IO Features...................................................................................................................................................................................................... 18
4.3.1 Pulse count and count clear............................................................................................................................................................................18
4.3.2 Automatic reporting of digital input DI.....................................................................................................................................................19
4.3.3 Digital output DO time setting.......................................................................................................................................................................19
4.3.4 Switch DO restart output state setting............................................................................................................................................................19
Important Notice ................................................................................................................................................................................................... 20
Revise history.........................................................................................................................................................................................................20
About us................................................................................................................................................................................................................. 20