Chapter 18 Testing and Debugging Tools 18.3 Debugging Mode for AH/AS Series 18.3.1 Enter Debugging Mode The debugging mode which ISPSoft provides for AH/AS series CPU modules supports all the programming languages. (Currently, when the AH560 Redundant System series synchronizes, it does NOT provide debugging mode.) However, the debugging functions can only be executed in the actions in a sequential function chart, and the steps to which the actions belong must be ON. Besides, if the state of a transition in a sequential function chart does not make the transition from one step to another step, users must change the state of the transition.
Click on the toolbar, click on the toolbar, and click on the toolbar. If the debugging mode is not enabled, but the CPU module is in the debugging mode, the debugging mode can not be enabled. (When the CPU module is in the debugging mode, Debug is displayed in the status bar in ISPSoft.) The reason is that the debugging mode was not disabled normally last time or another user on the network is debugging the program in the CPU module. If users want to reset the debugging mode, they must stop the CPU module, start the CPU module again, and enable the debugging mode.
18.3.2 Adding and Clearing Breakpoints Ten breakpoints at most can be added to the program in a project for an AH500 series CPU module. After users click a position in a program editing window and click on the toolbar, a breakpoint will be added to the position. If the users click the position again and click on the toolbar, the breakpoint will be canceled. 18-27