ISPSoft User Manual 18.1 Online Monitoring Function 18.1.1 Changing the Operating Status of a PLC Users need to constantly change the operating status of a PLC when they test and debug the program in the PLC. They can easily change the status of the PLC by means of ISPSoft. Before the operation status of a PLC is changed by means of ISPSoft, users have to make sure that ISPSoft is connected to the PLC normally. Please refer to section 2.4 for more information. After users click Run on the PLC menu or on the toolbar, the PLC will begin to run. The PLC will stop running after Stop on the PLC menu or on the toolbar is clicked.
If the operating status of a PLC is changed by means of ISPSoft, users do not have to consider the state of the RUN/STOP switch on the PLC. After the operating status of a PLC is changed by means of ISPSoft, users still can change the operating status of the PLC again by means of the RUN/STOP switch on the PLC. 18.1.2 Online Monitoring Function and Environment If ISPSoft is connected to the PLC normally, users can monitor the execution status of the PLC through the online monitoring modes. Please refer to section 2.4 for more information about setting the connection between ISPSoft and a PLC. In ISPSoft, there are two monitoring modes.
One is the device monitoring mode, and the other is the program monitoring mode. 18-2 Monitoring mode Description Device monitoring mode Users can monitor the statuses of the devices in the PLC through the monitoring table. In this mode, ISPSoft only needs to update the statuses of the devices. The present program in ISPSoft does not need to be the same as the program in the PLC. Program monitoring mode In this mode, the operating status of the program is displayed in the program editing window. As a result, the present program in ISPSoft must be the same as the program in the PLC.