ISPSoft User Manual 6.2.6 Downloading the Initial Values of the Symbols Users can set the initial value of a symbol when they declare the symbol. If a project is downloaded, the initial values of the symbols can be written into the devices assigned to the symbols. However, the initial values of the symbols in a project are written into the devices assigned to the symbol only when the project is downloaded. If a PLC is disconnected or stops running, and runs again, the values of the symbols in the program in the PLC will not be the initial values.
In order to ensure that the values of the symbols in the program in a PLC are the initial values whenever the PLC begins to run, it is suggested that users download the initial values of the symbols. When executing online updates, the system does not download the initial values of the symbol variables. Users can click the PLC menu, point to Transfer , and click Download to open the Transfer Setup window. The can also click on the toolbar to open the Transfer Setup window. After the users select the Initial Value (Active when download) checkbox in the Transfer Selections section, and click OK , the initial values will be written into the PLC. *.
Before the initial values are downloaded, users have to make sure that ISPSoft is connected to the PLC normally. 6-34