An OPC UA server that implements a simple water pump machine simulation.
Water Pump Simulation Server is created using OPC UA for the Water Pump and Qt Quick Water Pump 范例。
The OPC UA server runs a simulation of a machine containing two tanks, a water pump, and a valve. Water can be pumped from the first tank into the second tank and then be flushed from the second tank by opening the valve. Both operations have a user-configurable setpoint, allowing control over the amount of water pumped into or flushed from the second tank.
The following nodes exist on the server:
NodeId | 函数 |
---|---|
ns=2;s=Machine | The folder containing the method and variable nodes for the machine |
ns=2;s=Machine.State | The state of the machine |
ns=2;s=Machine.Tank1.PercentFilled | The current fill status of the first tank |
ns=2;s=Machine.Tank2.PercentFilled | The current fill status of the second tank |
ns=2;s=Machine.Tank2.TargetPercent | The setpoint for pumping and flushing |
ns=2;s=Machine.Tank2.ValveState | The state of the valve of the second tank |
ns=2;s=Machine.Designation | A human readable designation of the machine for display purposes |
ns=2;s=Machine.Start | Call this method to start the pump |
ns=2;s=Machine.Stop | Call this method to stop the pump |
ns=2;s=Machine.FlushTank2 | Call this method to flush tank 2 |
ns=2;s=Machine.Reset | Call this method to reset the simulation |
All methods return Good in case of success and BadUserAccessDenied if the operation is illegal (for example, trying to start the pump if the first tank is empty).
文件:
另请参阅 Qt Quick Water Pump and Water Pump .