Shan Posted November 23, 2006 Share Posted November 23, 2006 With LAbjack digital out should control a multiplexer. And the mux gives the voltage value through the analog in port. The following sequences should read and write the voltage value in the Motor1 channel only one time per period, in my case one time per minute. Motor 2,3,...etc may follow if this problem is solved. Sequence name DigitalOut time 0 DigitalOut = 0 time 30 DigitalOut = 1 time 60 goto(0) Sequence name Motor1 if (DigitalOut[0] = 0) read(Eingang0) //channel name of analog in port AI0 Motor1.AddValue(Eingang0[0]) endif This Sequence doesn`t work. I get the error message: C1070 not enogh parameters for the given operator:Motor1 Line 1 – Uncaught error in sequence Motor1. Link to comment Share on other sites More sharing options...
AzeoTech Posted November 23, 2006 Share Posted November 23, 2006 This is because you used a single = sign in your comparison. It must be ==. We may change this in the future as it catches a number of people, but for now you must use == whenever comparing values, and a = when assigning a value. Next a few comments on your sequences: 1) Don't use Time / Goto notation. Its bad form and is only there for backward compatability. Use: while (1) digitalout = 0 delay(30) digitalout = 1 delay(30) endwhile 2) If you really want the setting of the digitals and the readings to sync up, put them in the same sequence: while (1) digitalout = 0 read(Eingang0) Motor1.AddValue(Eingang0[0]) delay(30) digitalout = 1 delay(30) endwhile 3) if you are concerned about propogating time errors (i.e. loop taking slightly longer than 1 minute, use wait() instead of delay(). For those reading this and doing short loops, you have to be careful using wait(), but for your app, where the delays are long, a wait() should be fine. Link to comment Share on other sites More sharing options...
AzeoTech Posted November 24, 2006 Share Posted November 24, 2006 First, go to www.daqexpress.com and download the latest version of DAQExpress. It allows unlimited sequencing. As for your V Channel issue, you have to use V.Chan = newvalue not the AddValue() function. Link to comment Share on other sites More sharing options...
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