AH500 Quick Start 2.7 Creating Global Symbols In order to make the program more readable and the connection with the SCADA system more convenient, the I/O addresses are accompanied with the global symbols. Users can use the symbols when they write the program. The global symbol table also supports import and export. As to the system equipped with many inputs and outputs, users can use Microsoft Excel to make the editing more convenient. The global symbols created are as follows. With the information above, users can create the global symbols. Double-click in the window at the left side of the main screen of the software to open the Global Symbols window.
2-18 Global symbol table Bit (for the I/O on the PLC) Address Identifier Data type X0.0 Tank B1F LSW _ _ BOOL X0.2 Tank RF LSW _ _ BOOL X0.3 Tank RF HSW _ _ BOOL X0.5 SPP01 Remote _ BOOL X0.6 SPP01 Run _ BOOL X0.7 SPP01 Trip _ BOOL Y0.0 SPP01 Start _ BOOL D0 Tank B1F LT _ _ REAL Bit (for the SCADA system) M0 SPP01 Auto _ BOOL M1 SPP01 Man SW _ _ BOOL