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mazhar.ali
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How to detect open TC on cFP TC 120.

  hi

 

i want to detect open TC programatically means when TC is open then what is channel reading.

 

 

regards

mazhar

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Wayne.C
Posts: 1,994
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Re: How to detect open TC on cFP TC 120.

mazhar,

 

I found the following in the manual for the cFP-TC-120.  http://www.ni.com/pdf/manuals/373344a.pdf 

 

The [c]FP-TC-120 can detect open thermocouples. When you

select a temperature range for a channel, open-thermocouple

detection for that channel is enabled. When the [c]FP-TC-120

detects an open thermocouple, it reports an Open thermocouple

error for that channel and lights the corresponding red LED.

Member
mazhar.ali
Posts: 162
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Re: How to detect open TC on cFP TC 120.

thnx man i have read it already i want to know value in numbers not in form of LED.
Active Participant
Wayne.C
Posts: 1,994

Re: How to detect open TC on cFP TC 120.

mazhar,

 

As stated in the previoud post, the module will return and error/warning message when a TC is open.  See reply by Aaron G in this thread.   http://forums.ni.com/ni/board/message?board.id=110&message.id=2037&requireLogin=False

Member
mazhar.ali
Posts: 162
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Re: How to detect open TC on cFP TC 120.

[ Edited ]

thanx man

 

please check the screen shot and tell me if first chennel is open TC then what is th value of first element of put put array.

 

Message Edited by mazhar.ali on 05-05-2009 08:07 AM
Active Participant
Wayne.C
Posts: 1,994

Re: How to detect open TC on cFP TC 120.

Best guess would be that the value returned by an open TC will be determined by a combination of the cFP module and what type of TC it is configured to use.  In this case I would read each channel individually, and after each read check the error cluster to see if an open TC error/warning was returned.
Member
mazhar.ali
Posts: 162
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Re: How to detect open TC on cFP TC 120.

i have no hard ware right now but the hard ware module will be cFP TC 120

i have used NI FP RTD 124 and if that was open it gives 850 out out i want to know if in cFP TC 120 if there is open channel what will be the out put

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Wayne.C
Posts: 1,994
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Re: How to detect open TC on cFP TC 120.

You'll have to call NI for that.  I don't have a TC-120 here.  Why do you need the exact value?  Why does the TC open error returned from the module not meet your requirements?
Member
mazhar.ali
Posts: 162
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Re: How to detect open TC on cFP TC 120.

thanx man i have take ur lot of time and insist on my desired solution i think ur solution is right i want exact value for my easiness to check the open tc

 

thanx again for ur time and assistance. now i will handle it with by checking error cluster.