PD Class (PID BLOCK) A class that represents the entire Allen-Bradley PLC-5 PID BLOCK structure from a type 'PD' data table.

For a list of all members of this type, see PD Members.

System.Object
   ABLink.PD

Thread Safety

Public static (Shared in Visual Basic) members of this type are safe for multithreaded operations. Instance members are not guaranteed to be thread-safe.

Remarks

To read/write a PD element (e.g "PD13:0.Ki") specify the element name in the Tag.Name (e.g Tag.Name = "PD13:0.Ki") For a detailed description of the PD structure please refer to the appropriate Allen-Bradley programmable logic controller instruction manual.

Example

VB
' ************************
' * initialize controller and tag
Dim MyPLC as New ABLink.Controller("192.168.1.32")
Dim MyTag as New ABLink.Tag("PD13:0")

' ***********************
' * create a PD class
Dim MyPD As ABLink.PD

TRY
  ' ***********************
  ' * read the tag
  MyPLC.ReadTag(MyTag)

  If ResultCode.QUAL_GOOD = MyTag.QualityCode Then
  
    ' **********************
    ' * assign value to PD class
    MyPD = MyTag.Value
    Console.WriteLine(MyPD.Ki.ToString())
    Console.WriteLine(MyPD.Kp.ToString())
  End If
    
Catch ex As System.Exception
  Console.WriteLine(ex.Message)
End Try    

C#
///////////////////////////////////
// initialize controller and tag class
ABLink.Controller MyPLC = new Controller("192.168.1.32");
ABLink.Tag MyTag = new ABLink.Tag("PD13:0");

try
{
   /////////////////////////////////
   // read the tag
   MyPLC.ReadTag(MyTag);
   
   if (ABLink.ResultCode.QUAL_GOOD == MyTag.QualityCode)
   {
     // assign .Value to PD class
     ABLink.PD MyPD = (ABLink.PD)MyTag.Value;
     Console.WriteLine(MyPD.Ki.ToString());
     Console.WriteLine(MyPD.Kp.ToString());
   }
}
catch(System.Exception ex)
{
   Console.WriteLine(ex.Message);
}        
     

Requirements

Namespace: ABLink

Assembly: INGEAR.NET.ABLink (in INGEAR.NET.ABLink.dll)

See Also

PD Members | ABLink Namespace

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