Now want to use VB to write a program to measure the size of power, don't know how to start, has lower machine hardware is EDA9033A, who can help me, thank you

CodePudding user response:

Don't sink, ask for help

CodePudding user response:

Modbus, consult my code, you will also need a, 485 485 232 or USB turns connector
http://blog.csdn.net/bakw/article/details/50487609

CodePudding user response:

A serial port available MsComm control, through the OnComm event receives data from the lower machine frame, data frame following the agreement between upper and lower position machine communication protocol and specification,

CodePudding user response:

Reference: http://www.vbgood.com/thread-83700-1-1.html serial debugging software,

CodePudding user response:

This thing are field adjustable, code is also useless to you,
In the address, contact information, if close, can go to a trip,