| 摘要 |
<p>Methods of controlling and monitoring a field device are provided. A method of collecting data in a field device includes receiving indications of one or more variables for which data should be collected, receiving indications of one or more trigger events to trigger collection of data, receiving one or more threshold values associated with each of the one or more trigger events, monitoring the one or more trigger events, and initiating data collection when at least one of the one or more trigger events crosses one or more of the threshold values associated with the corresponding trigger event. A method of tuning a PID controller in a field device includes setting a limited range for selecting a value for a control parameter of the PID controller, selecting the value of the control parameter, wherein the selected value is constrained to be within the limited range, transmitting the selected value to the field device, obtaining, from the field device, a measurement of a response of the field device to a setpoint change, and displaying the obtained response measurements to a user.</p> |
