Search the Community
Showing results for tags 'tags me'.
Found 27 results
shalamar posted a topic in Allen BradleyI have been supplied with a list of tags from a vendor containing flags indicating if alarm conditions are on. These tags have the format AlarmGroup.Num.1 through AlarmGroup.Num.10 as recorded. Reading these tags as presented by making a read request to the Read Tag Service fails with general error code status 0x05, "Request path destination unknown. Probably instance number is not present.". I am using ASCII extended symbolic segments to translate the tag into a path so the instance number is not required for this approach. Upon further discussion with the vendor I found out AlarmGroup.Num.1 refers to bit 1 of the AlarmGroup.Num tag that is a DINT tag. I can successfully read the AlarmGroup.Num as a DINT but I was hoping for a more universal solution that would not require me to add solution specific parsing functionality to identify tags that refer to individual bytes from other tags and manually shift the bits as required. I am very new at this and I want to know if it is possible to address an individual bit (for reading only) from a DINT tag and how to build the path to access it. Are there other types of segments other than the ASCII extended segments required?