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Technical support / Re:TLServer File Services and On-line Monitoring
« on: February 14, 2009, 09:25:05 AM »
Thanks for the info on the XA command. I suspect that these XA commands are used by the On-Line monitoring and that the XA commands transfers binary (not just printable ASCII) data. This behavior precludes the use of STX/ACK arbitration.
Is there any mechanism that the PLC can use to detect if On- line monitoring is in progress? An undocumented TBasic command or a special bit that ladder logic could "look at" would be great.
I've worked with the sample code that was provided for the XServer and found that these algorithms do not work with On-line monitoring. I've spent a couple of days attempting to develop more reliable algorithms but the XA command seems to be the one problem that I cannot work around.
Thanks again for your help.
Is there any mechanism that the PLC can use to detect if On- line monitoring is in progress? An undocumented TBasic command or a special bit that ladder logic could "look at" would be great.
I've worked with the sample code that was provided for the XServer and found that these algorithms do not work with On-line monitoring. I've spent a couple of days attempting to develop more reliable algorithms but the XA command seems to be the one problem that I cannot work around.
Thanks again for your help.