Reading Floating Point PLC5 Registers Kills my ability to write to any register

[BCAuto]

When ever I create an object that reads a PLC5 Floating Point Register(F8:5),it kills my ability to write to any other PLC register. The problem only shows up with Floating Point registers. If I use integer registers (N7:121 etc.)I can read/write fine. It also severely slows down my normal driver scan update time. Even though it is set to scan every 30 seconds, I may only get an update every few minutes. Anyone else ever run into this? Thanks in advance!

[Anonymous]

Hi,

It might be helpful creating a log file to monitor com port activity.
Here's the Knowledgebase article about it.
http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/cac576863ff648a186256b5900794761?OpenDocument

Another way to check the serial port activity would be using "portmon"
software available at
http://www.sysinternals.com/ntw2k/freeware/portmon.shtml

I hope this helps.
Remzi A.
Applications Engineering
National Instruments