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
