PLC Communication

Question

I am using Melsec Q series PLC.

PLC module Qj71e71-100 .This module via data read/write purpose.

This module support CMD Details tell me .Here attached the source code.

 

Answer 1

Hi,

 

What is your exact problem? 

Answer 2

Please tell me idea for this error code;C058,00A1

I am PLC Programmer.

Some knowledge for C#.

 

C# Side error .

IndexOutOfRangeException was unhandled by user code.

Nothing in buffer. 

Answer 3

PLC side Error ;00A1

  Error Description;

Contents of the request cannot be analyzed because

the text length or request data length is too short.

 

Action; 

Check and correct the text length or request data length of the Qn

header. Then send data to the Ethernet module again.

 

PC Side Error;

Nothing in Buffer.

 

Ethernet module automatic going error mode.

 

PLC Data Read button Click automatic above error coming.

Please share any idea.