How long can record on cFP 2200 -128MB

Question

We want to use Real-time controller which cFP-2200 128 MB DRAM but we dont know how we can calculate time of record of controller if we connect to controller a cFP TC 120 16 bit thermocouple input module, cFP AI 100 12 bit analog input module and cFP CTR 502 counter input module.
thanks a lot

Answer 1

Hello,
It can be difficult to say exactly how many seconds or minutes you can log data
on a cFP controller because it really is possible to set up the controller to
continuously log data for an "infinite" amount of time (or at least
until there is an error, power failure, or something else that would interrupt
the functionality of the controller).  The issue is that there is only
128MB of space on your controller so you need to make sure that you are
transferring the data quickly enough before the memory on the board fills up
because that will also stop recording.  Knowing how long you have before
the memory on the controller becomes full if you are not transferring the data
to another machine  completely depends on how much and the type of data
that you are logging.  My recommendation to you if you have a time constraint
of how long you need to run your logging would be to transfer the data off from
the cFP to make room for more data logging.  Here is a knowledgebase article that
will explain the different communication methods that you can use to transfer
data.  Also here is another link that shows how to FTP
files to and from a Real-Time Controller.  I hope this helps!
Message Edited by Bob_H. on 07-31-2008 10:54 AM
Thanks!
Bob H
Applications Engineer
National Instruments