Updaterate of opc url less than 1 s doesn't work

[RainerB]

I conntect to a field point by using this url:
 opc://localhost/National Instruments.OPCFieldPoint/FP @ COM1\FP-TC-120 @1\Channel 3?updaterate=50&deadband=0
and with AccessMode cwdsReadAutoUpdate.
The adviserate of the field point channel is 10 ms.
The connection between PC and fieldpoint FP1000 uses a serial port with a baudrate of 115200
The measured temperature changes fast. But the CWDataSocket_OnDataUpdated method comes only once per second.

If I change the updaterate to more than 1 s it works in greater intervalls, but not with updaterates less than 1 s..

What can I do to get more datas with a faster updaterate of the opc server?

Thanks

[ManuelW]

Hi Rainer

I think the problem is your FP-TC-120 module

If you look at the datasheet of your module you can see that the max. update rate of your FP-TC-120 is only 0.88 Hz.

regards

Manuel

[RainerB]

Hi Manuel,

thank you for your help, this is really the problem. And now I have to live with it.

regards

Rainer