Chapter 3 PLC System Configuration & Settings After the errors occurring in a module are eliminated, users can click Clear to clear the errors in the window, and the error stored in the module. The module will not be in the erroneous condition. After users click Refresh , the system will retrieve the data in the module again. The data will be displayed in the window. 3.8.6.3 Changing the Status of a Module Online If the hardware configuration is in the online mode, users can change the status of a module, carry out a simple test. Before the status of a module is changed, users have to make sure that the operation does not cause damage to the system or staff.
Changing the operating state of a module If the hardware configuration is in the online mode, users can right-click a module, and click Run on the context menu. The module will begin to run. When the module runs, the green light on the module is ON. If the users click Stop on the context menu, the module will stop running. Besides, if the operating state of the CPU module is changed, the operating states of all the modules are also changed. Changing the input/output state of a module If the modules which are configured include a digital I/O module, an analog I/O module, or a temperature measurement module, users can right-click the module, and click Module Status on the context menu.
The users can monitor the input/output state of the module in the window which appears. In the window for a digital I/O module, users can right-click an input/output channel, and click Force ON or Force OFF on the context menu. Before Force ON or Force OFF on the context menus is clicked, the CPU module and the digital I/O module must run to produce the actual outputs. 3-251