AH500 Quick Start in all modules. In other words, for some modules, there may be no error log in the History box. Since no error occurs, users can close the Module Error Log window. Besides, users can find that the whole system returns to normal. Users can set the CPU module to STOP, and then set it to RUN. When the CPU module runs, the system and the screen of the software return to normal. Close the SPW-HWCONFIG window, and return to the main screen of ISPSoft. Users can see the error log by selecting PLC Error Log on the PLC menu. 3-14