PC system by VB programming, need communication with S7-200, how to implement??

CodePudding user response:

https://wenku.baidu.com/view/58dce36fc281e53a5902ff05.html

For your reference

CodePudding user response:

This kind of communications with "peripheral", nothing more than is to use "serial", or "so" bai,

CodePudding user response:

S7-200 programs on who wrote it?
And to write program to coordinate the communication protocol,
Like the modbus protocol may call the function block directly,
If someone else is written, and could not be reached, then only the ppi protocol,
The protocol information online has, oneself look for,

CodePudding user response:

refer to the second floor a toast to invite the bright moon response:

this with "peripheral" communication, nothing more than is to use "serial", or "so" bai,

How make

CodePudding user response:

S7-200 is not open, the agreement of the modbus or free agreement, agreement of liberty and write PLC program engineer communication format and the definition in advance!