ISPSoft User Manual In the online monitoring mode, users can view the present scan time and the status of the PLC in the status bar in ISPSoft. The light at the left side of the status of the PLC indicates the communication status. When ISPSoft communicates with the PLC, the green light blinks. If an error occurs in the PLC, users may not be able to operate the PLC, e.g. the PLC can not run. Please refer to the manual for the model used for more information about troubleshooting. The present statuses of the devices will be displayed in the program editing window after the program monitoring function is enabled. Users can debug and test the program in the program monitoring mode.
The way in which the statuses of the devices in a program are displayed depends on the programming language used to create the program. A ladder diagram in the program monitoring mode is shown below. 18-4