ISPSoft User Manual 18.1.4 Monitoring a Program Online In the program monitoring mode, users can change the state of a contact or the value in a register in the program editing window. By means of changing the state of a contact or the value in a register, users can debug or test the program. If users want to manipulate a device or an operand in a ladder diagram or a function block diagram, they can click the device or the operand, right-click the device or the operand, and select an item on the context menu. The items on the context menu vary with the programming language used.
If users want to manipulate an operand on an instruction list or in a structured text, they can right-click the operand, and select an item on the context menu. If users want to manipulate a step or a transition in a sequential function chart, they can right-click the step or the transition, and select an item on the context menu. 18-8