FBWithUserStruct.cs

#region Copyright

//
// Copyright (c) Phoenix Contact GmbH & Co. KG. All rights reserved.
// Licensed under the MIT. See LICENSE file in the project root for full license information.
//

#endregion Copyright

using Iec61131.Engineering.Prototypes.Methods;
using Iec61131.Engineering.Prototypes.Types;
using Iec61131.Engineering.Prototypes.Variables;
using Iec61131.Engineering.Prototypes.Common;

namespace ExampleLib
{
 // The attribute "Structure" is necessary to make the struct visible in the PLCnext Engineer
 [Structure]
 public struct Position
 {
 // the fields must be public as well as the struct itself
 [DataType("DINT")]
 public int x;
 [DataType("DINT")]
 public int y;
 }

 // Pass 'Input' and 'Output' parameter by value.
 [FunctionBlock]
 public class FB_with_user_struct1
 {
 [Input]
 public Position NEW_POSITION;

 [Output]
 public Position CURRENT_POSITION;

 [Initialization]
 public void __Init()
 {
 }

 [Execution]
 public void __Process()
 {
 if (CURRENT_POSITION.x < NEW_POSITION.x)
 {
 CURRENT_POSITION.x++;
 }
 else if (CURRENT_POSITION.x > NEW_POSITION.x)
 {
 CURRENT_POSITION.x--;
 }
 if (CURRENT_POSITION.y < NEW_POSITION.y)
 {
 CURRENT_POSITION.y++;
 }
 else if (CURRENT_POSITION.y > NEW_POSITION.y)
 {
 CURRENT_POSITION.y--;
 }
 }
 }

 // Pass parameters by reference as an 'InOut' parameter. This saves memory and CPU time for copying values for large arrays and structures.
 [FunctionBlock]
 public class FB_with_user_struct2
 {
 [InOut]
 unsafe public Position* NEW_POSITION;

 [InOut]
 unsafe public Position* CURRENT_POSITION;

 [Initialization]
 public void __Init()
 {
 }

 [Execution]
 unsafe public void __Process()
 {
 if ((*CURRENT_POSITION).x < (*NEW_POSITION).x)
 {
 (*CURRENT_POSITION).x++;
 }
 else if ((*CURRENT_POSITION).x > (*NEW_POSITION).x)
 {
 (*CURRENT_POSITION).x--;
 }
 if ((*CURRENT_POSITION).y < (*NEW_POSITION).y)
 {
 (*CURRENT_POSITION).y++;
 }
 else if ((*CURRENT_POSITION).y > (*NEW_POSITION).y)
 {
 (*CURRENT_POSITION).y--;
 }
 }
 }
}