Ok ... so I fixed most of the issues. So-far the problems I need to address are the following:
- When using "BOOL[]" we have to read a bit-string (byte, word, dword) instead and filter out the bits that are not asked for. - When reading "STRING(x)[]" (limited strings), we have to split up the request into multiple items as the typical array notation doesn't work. - When reading bit-strings the order of the bits looks the wrong way around - When reading bit-string arrays, I would like to concatenate the values to one bit-string instead of returning lists of lists Chris Am 25.10.20, 21:59 schrieb "Christofer Dutz" <[email protected]>: Hi all, in order to have some good tests for the S7 protocol, I defined a lot of variables in one of the data-blocks of one of my S7 devices. I then created a little test program that should simply use this to read all sorts of types of elements. With these tests I found some things: * In general all Bit-String operations, when reading arrays, produce lists of lists … I think it would be cooler if for bit-strings they would return one large List * STRING handling seems to be messed up again * When reading a BOOL array, it seems the S7 only returns the first bit (I would have expected it to send up to 8 bits in one byte and after that to add more bytes, but it’s always just one and that always just contains the first bit) -> We need to translate BOOL-array reads into bit-string operations which return partial lists. * Reading of DATE_AND_TIME arrays seems to be messed up as only the first item is correct and the succeeding elements are always “null” * Reading of CHAR values seems messed up I’ll be working on addressing this asap Chris
