Applies To:
  • CitectSCADA 5.41, 5.41 Service Pack A, 5.41 Service Pack B, 5.42, 5.42 Service Pack A, 5.50, 5.50 Service Pack A, 5.50 Service Pack B, 6.00
  • CitectHMI 5.41, 5.41 Service Pack A, 5.41 Service Pack B, 5.42, 5.42 Service Pack A, 5.50, 5.50 Service Pack A, 5.50 Service Pack B, 6.00
Summary:
Is it possible to have a digital tag read from a graphic on a mimic page reading the tag incorrectly but the same tag read from a super genie and tagdebug
reading correctly?
 

Solution:
Yes this can occur.

If a customer has made changes to the Max_Length and Bit_Block sizes for ABCLX in Protdir.dbf file, and the new values are not a multiple of 16, the behaviour described can occur.

If you make changes to the Max_Lenght or Bit_Block sizes for ABCLX, ensure that the value is a multiple of 16 (typically 4048 or 4032). This advice also applies to other OID based drivers (i.e. OPC, etc)

Please refer to KB Q4068 with relation to implications for ABCLX and CTAPI regarding Max_Length and Bit_Block sizes.
 
Keywords:
ABCLX, digitals, round down

Attachments