Is OPC typically low latency (time from data generated to to client received)?ĭoes anyone have a recommendation for a product (NI OPC, Kepware, etc.)?
#NI OPC SERVER 2017 UPDATE#
What are viable update rates for OPC tags? I will need at the very (very) least 250 ms update rates. I would be very grateful if anyone has the experience to comment on the following or anything else related to using OPC. Unfortunately, I think I would have to use LabVIEW DSC (or datasockets.) to integrate the PCs. Unfortunately, I won’t have time to roll my own in the near future, but LVRT supports supports OPC UA, so I could potentially integrate the cRIOs fairly easily. I don’t see OPC mentioned very often (in fact it returns 0 results on LAVAG), and a lot of the stuff I see these days seems to be more “roll your own” or lower level (raw TCP/UDP, 0MQ, Network Streams, Transport.lvlib etc.) rather than a monolithic abstracting bridge like OPC. To do this, we would need to integrate our cRIOs and operator PCs into the OPC environment as well. Since I may be required to use OPC anyways, I was considering using an OPC server to aggregate all of the facility data, and then redistribute to control rooms, historical logging, etc. Now, we are currently expanding our data generating capabilities (hence the PLC), and I have been thinking about rearchitecting the way we collect data from all over our facility to be more flexible.
#NI OPC SERVER 2017 FREE#
If anyone else knows a better way, feel free to stop me here. After a good deal of googling, I think the best (maybe only) way to get the data out is going to be via OPC, thanks to their proprietary Melsoft protocol. I recently was presented with the task of integrating a Mitsubishi PLC into our systems.
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