Chapter 2 Analog Input Module AH04AD/AH08AD *1. Please use a shielded cable as an analog input cable, and isolate the shielded cable from other power cables. *2. Please connect the terminal SLD to the ground terminal . 2.3.4 LED Indicators 2.4 HWCONFIG in ISPSoft 2.4.1 Initial Setting (1) Start ISPSoft, and then double-click HWCONFIG . 2-19 Number Name Description Operating status of the module RUN LED 1 ON: The module is running. indicator OFF: The module stops running. Error status of the module ERROR LED ON: A serious error occurs in the module. 2 indicator OFF: The module is normal. Blink: A slight error occurs in the module.