Search the Community

Showing results for tags 'channel'.

More search options

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


  • DAQFactory
    • Alarming
    • Channels, Conversions and general data acquisition
    • Graphing
    • Logging
    • Modbus
    • Networking: web, email, FTP etc.
    • PID
    • Screen Components and User Interface
    • Sequences and scripting
    • Serial Communications
    • General DAQFactory
    • DAQFactory and the LabJack
    • DAQFactory Express
    • DAQConnect
    • DAQFactory New Feature Requests
    • The DAQFactory Guru's Articles
    • DAQFactory Newletters

Find results in...

Find results that contain...

Date Created

  • Start


Last Updated

  • Start


Filter by number of...


  • Start





Website URL







Found 8 results

  1. I started a new project, completely blank, using a new Modbus capture device. My channel's I/O Type is Read Holding Float R Words. If I select the channel to be 1, I don't get accurate data in the "Watch" window. If I have my channel set to 0, I get what I would expect. If I now change my channel to 40001, the data streams as what I would expect and if I change my channel back to 1, it remains accurate. Is this by design?
  2. I am trying to read register (400xx's) value through a Banner radio connected to a Murphy controller via DAQFactory. For some reason it is saying the max register number I can read is 25535. I then connected a transducer to the same Banner radio and I was able to check the 400xx's series register value via DAQFactory. What can be the error here?
  3. In the DAQFactory Users Guide, at, the entry: "Set Channel:The channel or variable that will be set to the selected value." could have appended: "For Radio Buttons, setting the associated Channel to a new Value that matches one of those in the Buttons.Value list will set that Button to display as Selected."
  4. We'd like to dynamically select which Channels are in use during testing sessions. Switching Channel.Timing between 0.00 and 0.01 is reported correctly in the Channel Table, but Variable Values derived from Channels, for instance, do not track the changes (by showing or not the beloved Red X). Stopping the Document and reloading it after the .Timing is changed DOES cause the desired results. We'd like to dynamically re-select Channels during the same run of the Document, as well as change some .Expressions, .LogFileName, and such, to reflect the new selected Channel set without having to manually stop and reload the Document. Is this possible?
  5. what is the best way to set formula and use it many times in our aplication... For example... I found somewhere formula to calculate DEW point from temperature and relative humidity from many sensors.. X= 1-(0.01*RH) K= Tc-(14.55+0.114*Tc)*X-((2.5+0.007*Tc)*X)^3- (15.9+0.117*Tc)*X^14
  6. Hi, i have a "test" device of type "D to A" - into which i put values using variable.AddValue(x). I do that in a loop in a sequence. However, the historical plot of this variable appears totally screwed - upon closer inspection, it appears to me that the autogenerated time is wrong, and sometimes even goes backwards. Sometimes as far as 20 minutes . . . . What do I do wrong? it nearly appears as if the binary format of the time was different than expected (bits flipped in the memory), or that the time resolution in the auto-generated time in x.AddValue(y) is too low . . .?
  7. While trying to recover from the issue in this thread: I exported (working) LabJack channels from a backup project and imported them into the main one. The list gets populated correctly and everything looks fine, but when read the A to D channels show an integer value. Looks like the automatic conversion to floating point volts isn't happening. If I add the channels one at a time manually they behave normally, so that will work for the time being. Attached is the channel export and a screenshot of the table. (renamed the channels to .txt to allow upload) lt-channels.txt
  8. I'm trying to convert the analog signal from a thermistor-resistor network to a temperature. (I know a thermalcouple would probably be better suited for this, but for now I have to work with a thermistor.) The data sheet on the thermistor does not give a single expression for converting resistance to temerature, but instead gives a table of values at certain temeratures. So I thought I might be able to simply put this table into a function, pass the input of the channel into this function so it can find a resistance, interpolate between known points and then return a temperature. However, I'm having a lot of trouble getting a custom function to work correctly in the conversions. In the expression for the conversion, I am calling the function like this: Test_Sequence(Value) Where Test_Sequence is defined as follows: function Test_Sequence (input) private output output = 2*input return output The function Test_Sequence behaves as I expect it to (from the Command/Alert window anyway), but when I attempt to use it in the conversion expression, it doesn't seem to do anything. Is there something I'm not handling correctly?