Greetings

I´m writing again first to thank you allfor the help obtained, in second place I want to commentanother problemthat I found on my S7-200 to TP177 interface. Well, the problem now is the bargraphs on the TP177 don´t show the value that the variable contain unless this value changes continuously on the PLC. In other words, if the value in the variable don´t change every cycle of the PLC the bar appears empty. If I change the value on the screen (I have an entry numeric field to adjust power which goes from 0 to 100) the bar fills to the selected level but if I go to another image (or screen), and then return back to the first, the bar no longer shows the selected level.

This only occurs with the bars connected to registers that mantain the same value for several PLC cycles, the bars connected to values that changes constantly every PLC cycle appear filled according to the value in the register of the PLC.

In order to solve this I increment the speed of the interface between the TP177 and the S7-200 to 19200 Bauds with no results at all, also I´ve tried the different modes of acquisition (cyclic, continuous cyclic and on demand) in WinCC with the same results.

I´m using WinCC Flex Micro with SP1 and the STEP 7 Micro Win SP4.