The platform I'm testing is built with Labview 8.0 and Lookout OPC driver for Omron logic controller.
I use the RS232 output with speed 19200 baud/s.
The problem is that occasionally ( About every 10th time ), when I
write to a global variable from LV , which I have connected to
a logic input HR97.01 by means of Lookout OPC driver, the logic controller ( Omron C200HS ) still has the old status.
From the global variable I can see that LV has updated status for HR97.01.
Case 1:
If I try, from labview to change the status of the global variable, the logic controller fails to notice any changes.
Case 2:
But if I manually click the boolean control twice, the status is updated on the logic controller
This is done while LV is running in both cases 1 and 2.
OPC server does not indicate any errors.
Any ideas?
Arto Tikkanen
