I want to generate a text file for every day, every hour which should consists of Process values.

I have readily 4-20mA outputs from transmitters, how can I communicate these values to PC and then text file generation?

No controls require just for monitoring, please suggest me?

 

Get DAQ Factory from www.azeotech.com

 

Hi There,

You may want to have a look at the Netbiter (www.netbiter.com). It has a few AI on the hardware and can be expandable with more AI, by adding Netbiter I/O extenders.

I am not sure if the system can export txt-files, but I know it can export .xlsx and sql.

My 2 cents

Patrick Lansdorf

 

Thank you Mr.steve,

I have installed DAQsofware, but how to interface it to hardware, pardon my knowledge in Systems

 

It has support for quite a few industrial protocols, including Modbus RTU and TCP, so there are a lot of hardware options. A lot of people seem to use LabJack hardware with it for purely DAQ applications, and that's well supported.

 

First of all, you need an I/O interface with your instrumentation. A PC cannot straight away communicate with a 4-20mA instrument output so you need an analog to digital converter. For this there is a wide range of solutions out there, from home made cards to high-end control systems. Check National Instruments, for example, look for 4-20mA I/o cards.

Then this interface solution comes with a communication software so you can transfer the data into your PC and do whatever you want with it.

I would suggest that using txt files will prove cumbersome on the long run. Better put a bit more time and money into the project and store the data in a database and build an interface to it so that you can have graphs, archiving and the rest.

 

thank you

 

I Agree. I/O Interface needed. Also might want to try some OPC tools that will allow you to view historic that data as well as get the data at regular intervals. MatrikonOPC has a free 50 tag historian you could consider and use some other free tools from them to view the tags.

>First of all, you need an I/O interface with your
>instrumentation. A PC cannot straight away communicate with
>a 4-20mA instrument output so you need an analog to digital
>converter. For this there is a wide range of solutions out
>there, from home made cards to high-end control systems.
>Check National Instruments, for example, look for 4-20mA I/o
>cards.