Chapter 4 Quick Start 4.6.3 Connection Test After a program is downloaded to a PLC, users can monitor the execution status of the PLC through ISPSoft. There are two monitoring modes that ISPSoft provide. One is the device monitoring mode, and the other is the program monitoring mode. *. The device monitoring function can be enabled independently. However, if the program monitoring function is enabled, the device monitoring function is also enabled. After users click Online Mode on the PLC menu, or on the toolbar, the online monitoring function will be enabled. The system will also enable the device monitoring mode and the program monitoring mode.
In the online monitoring mode, users can view the present scan time, the communication status, and the status of the PLC in the status bar in ISPSoft. 4-33 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.