Hi! I´m totally new to S7 and have the following problem: From a custom-GUI I need to transfer some data between a PC (with Step7-Software) from a custom GUI (written in C++) to a S7 and one or more controlers connected to it. In detail I need to access the OB1, FBs and DBs to "find" my datablocks I want to manipulate, the overwrite one DB and set another bit in another DB. Also I need to query some variables in other DBs for current values. But I have no idea how to do this! So I read some post in this forum and found some hints to access the data, which is stored wihtin the Step7-Software using "SimaticClass", "S7Project", "S7Program" and "IS7SWItem". But I didn´t manage to get or put live-date to the S7. I would appreciate any help that I can get to connect my GUI to the S7. Thanx a lot! J.
