Creating and Modifying Programs
Creating a Program with Variable Run Time

To be able to create a program with variable run time for method development, you need a generic device driver. This driver is not included on the Chromeleon software CD. However, you may use the example driver described in the Administrator Help section (see Hardware Installation: Special Drivers: The Generic Device Driver  Example), and then generate the following program for this driver:

(…)

 Flow = 1.000

 %B = 60

0.000  UV.Autozero 

 Inject

 3DFIELD.AcqOn

 UV_VIS_1.AcqOn

 UV_VIS_2.AcqOn

 Stop_Device.Time = 15.000

 Trigger EndTime System.Retention>Stop_Device.Time

 3DFIELD.AcqOff

 UV_VIS_1.AcqOff

 UV_VIS_2.AcqOff

 End

 EndTrigger

999.000 3DFIELD.AcqOff

 UV_VIS_1.AcqOff

 UV_VIS_2.AcqOff

 End

The program ends when the time defined for the stop device (here: 15.000 minutes) has been reached. You can change this time from the panel during the program run. If the Stop-Device.Time is not reached, the above program runs 999 minutes.

To change the run time quickly, create, e.g., an edit field on the control panel, following the instructions in Controlling Devices from the Control Panel  Modifying a Control Panel. On the Link tab page, link the edit field to the Time object property of the Stop_Device. You can then use this edit field to set the run time to the desired value.

In addition, to identify the edit field, create a Color box above the field: