Direct 06 and a TC card problems

Join Date
May 2006
Location
NC
Posts
24
I am using a Direct 06 PLC with a F0-04THM card and a K type thermocouple. The card is in Slot 3. When I look at the V memory (v-2000) location after the programming, I see a number that might sometimes read 24E, 24C,24B, 24A, or 24F. Sometimes it read 249. The actual temp, according to the fluke analyzer is 50 degrees. The only thing the temp readout is for is for it to be displayed on a 6" DL HMI.
The card paperwork says it displays an actual temp with no scaling needed. So what am I doing wrong?

I am not sure how to write the logic here but I will do my best.

"SP0"---LD K0400"

"OUT V720"

"LDA O2000"

"OUT V721"

"LD K1"

"OUT V723"
"OUT V724"
"OUT V725"
"OUT V726"
 
View the results in 'decimal'. The reading is to the tenth of a degree the last digit being that 'tenth'. The decimal point is assumed.

24E = 590 (59.0)
24C = 588 (58.8)
24B = 587 (58.7)
24F = 591 (59.1)
24A = 586 (58.6)
 
That got it. Thanks. I have used GE plc's for years. Its seems as if there is a lot to learn with the DL's.

Thanks again.
 

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