9.3. PARAMETER WRITING The parameters that can be written are presented with the value in black, while the read-only parameters are displayed in gray (Figure 9.3). To change the value of the parameter in the HART device or locally on VMT-HART (as type parameter class) click the parameter, change its value and then click on the "Commit" button (at the bottom of the screen.
VMT-HART HART ® CONFIGURATOR FOR ANDROID DEVICES INSTALLATION, CONFIGURATION AND OPERATION MANUAL ______________________________________________________________________________________________________________________________ 29 Figure 9.3 – Screen with parameter read-only. Note that the parameter color will turn yellow (Figure 9.4) and after the completion of the writing process, will be back to black. During the writing process, the message "Please wait Writing and reading data of the device" (Figure 9.4) appears. Figure 9.4 – Writing a parameter. If write was not successful, the parameter value will return to the same as it was before the write operation and the Response Code message will be displayed, if being handled by the HART device DDL (See topic DDL HART. If write occurs successfully, the parameter value will remain the same entered by user. Only the parameters changed by user are written to device.
VMT-HART HART ® CONFIGURATOR FOR ANDROID DEVICES INSTALLATION, CONFIGURATION AND OPERATION MANUAL ______________________________________________________________________________________________________________________________ 30 Figure 9.5 Response Code Screen. If there is a corresponding reading HART command, after writing a parameter, the reading of the changed parameter will be performed. To check if it was successful, click "Back" button to return to previous menu and then by reentering the screen, all values will be updated.