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Instrument Control (GPIB, Serial, VISA, IVI)

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NI OPC Server Slow To Update

Hi,

I am reading data from a compact DAQ 9184 chassis containing the following 3 modules: 9203, 9219 and 9213 via OPC but the fastest update rate I seem to be getting is about 0.7Hz even though the OPC client is requesting at a 2Hz rate. This only appears to happen with the compact DAQ OPC server (National Instruments.Variable Engine). I have several compact fieldpoint devices on the same network (using the National Instruments OPCFieldpoint server) and they update at the correct rate. I have set the 9213 module to high speed (rather than high precision) in case this was slowing things down but this has no effect. Is there a setting somewhere that I have missed?

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Oops, sorry, I posted to the wrong group - reposted to Multifunction DAQ

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