Data base communication is communication between different software. We might have data in Microsoft word or Microsoft Excel or other software and we need access for our program then this function of PLC helps us to communicate with them.
Tick on working of formula R1C1 reference style. Here we save our file with name ‘g’ at any place you want.
Here we run our scada program. When we change the value in Display, Same data pasted in Excel in Row first, column first. Same happens when we change in R1C1 of Excel, the data also changes in display of Scada.
3. A simple user (Not a PLC programmer) can control the full system with their best command software like Microsoft Office.