Problem reading data from AB PLC

Hi,everyone

I have a problem reading data from AB PLC 1756 using Intouch 2020,I try to read the bool array data.

I used "[]", but when I read the bool array in the PLC program, I found that one word of data was missing. That is, when I used the driver to read the 32nd element of the array, I actually read the data at the 64th element. At this time, Bool[32] in the program is "TRUE", but Bool[64] in the SMC is "TRUE" (Bool is actually a tag name). In my opinion, this is abnormal. 

Who knows what causes this phenomenon?

The picture shows the data I tested with WWClient.

Regards,

  • Apologies for the late answer. I'm unfortinately not sure what causes the problem. If it still persists, I can only recommend to contact Tech Support for assistance.

  • Hi, if youre using Intouch 2020 , you should be using OI  CIP Server, not DASABCIP , secondly have a look at the firmware compatibility, with the above two you should find your answer