Problem reading from DB in PLC ET200SP CPU #558
Description
Hi there,
I'm just trying to read DB variables using S7.Net+ from an ET200SP CPU
I use Visual Studio 2002
I have an exception in the function ReadBytes in the file PlcSynchronous.cs
public byte[] ReadBytes(DataType dataType, int db, int startByteAdr, int count)
with the parameters dataType : DataBlock , db : 4 , startByteAdr : 10 , count : 50
In the PLC DB4 is defined as an Array[0..100]of Word
The function ReadBytes calls the function
public void ReadBytes(Span buffer, DataType dataType, int db, int startByteAdr)
Then this function itself calls the function
private void ReadBytesWithSingleRequest(DataType dataType, int db, int startByteAdr, Span buffer)
But the AssertReadResponse function throws the exception
S7.Net.PlcException: "Received 12 bytes: '32-02-00-00-00-00-00-00-00-00-81-04', expected 68 bytes."
The checkbox Permit access with PUT/GET communications is checked in Protection & Security > Connection mechanisms
Do you have any idea?
