dschmiddr
Member
Sometimes I want faster updates on my SCADA system. I've researched documentation from AB and found a few pointers but I also have a few questions and would be interested in someone on this forum providing their experience and advice.
Most SCADA systems don't support DINTs therefore creating INT tags will result in less overhead for the communications because I can cram more INTs into a single read request then I can do with DINTs. Perhaps I can have a routine that maps the DINT tags in the PLC to an Array of INTs. My SCADA system can then read from the Array of INTs. If I put the Array of INTs into a periodically scanned program that scans at the same rate that the HMI scan class is then my communications is optimized between the PLC and the SCADA system.
The PLC is a control logix v21+. The SCADA system is Ignition but I also use Kepware from time to time.
Most SCADA systems don't support DINTs therefore creating INT tags will result in less overhead for the communications because I can cram more INTs into a single read request then I can do with DINTs. Perhaps I can have a routine that maps the DINT tags in the PLC to an Array of INTs. My SCADA system can then read from the Array of INTs. If I put the Array of INTs into a periodically scanned program that scans at the same rate that the HMI scan class is then my communications is optimized between the PLC and the SCADA system.
The PLC is a control logix v21+. The SCADA system is Ignition but I also use Kepware from time to time.