Hi everyone, long-time reader of the forum, first-time poster.
I have a customer that we've built a number of machines for that would like to do some "high-speed" datalogging. They don't really know how fast they want, but the range we're looking at is 5 sensors (load cells) at 30-100 records/second. Ultimately, the data needs to be saved to a CSV file automatically.
We've tested and proposed a couple of solutions. My favorite so far is making the maximum size (65k) datablock in an S7-1200 PLC and filling it during the test (which gives me almost 30 seconds of data at 100Hz). After the test I can read it out in blocks and save it to the memory card using datalog instructions. At the other end, we looked at National instruments hardware that would be 10 times as fast, but our customer feels more comfortable with a PLC-based approach.
So on to the question: Who else is logging data in a PLC, what hardware are they using? Has anyone run across a similar application, and how fast did they manage to get?
Thanks!
Mike
I have a customer that we've built a number of machines for that would like to do some "high-speed" datalogging. They don't really know how fast they want, but the range we're looking at is 5 sensors (load cells) at 30-100 records/second. Ultimately, the data needs to be saved to a CSV file automatically.
We've tested and proposed a couple of solutions. My favorite so far is making the maximum size (65k) datablock in an S7-1200 PLC and filling it during the test (which gives me almost 30 seconds of data at 100Hz). After the test I can read it out in blocks and save it to the memory card using datalog instructions. At the other end, we looked at National instruments hardware that would be 10 times as fast, but our customer feels more comfortable with a PLC-based approach.
So on to the question: Who else is logging data in a PLC, what hardware are they using? Has anyone run across a similar application, and how fast did they manage to get?
Thanks!
Mike