Q68ADI scaling function block

[kav]

Hello to everyone! I have an analog card Q68ADI and 2 Pt1000 termometers with 4-20mA transmitter. Pt1000 are connected to Q68ADI. With Function block from Analog Q400 library can read the analog value and then the digital value from -288 to 12000 (in high rsolution mode). I would like to convert the digital value in Celsius degree from 0 -100 oC. Which is the right way to do it?? Thanks for your help in advance!

[kaare_t]

Check this scaling function out: http://www.beijer.no/web/web_aut_no.nsf/docsbycodename/filearchive?OpenDocument&mylink=/web/BExFilePileAUT.nsf/fm.be.searchframe?Openform&Lang=NO&DocID=737481A1FD1419ADC12576240030C1F3

[Crossbow]

Provided you are using GX IEC Developer... if not, it's a bunch of ladder code...

[mjrx]

Why can't you just code: C = (DigAnalogVal + 288) / 122.8

[plcfreak]

Hello Vangelis.... As you use the QUE3UDE CPU you can try also SCL or DSCL Functions. Instruction details youn can Find at the Help File Of GXIEC Developer

[kav]

Thanks to all for your help! At this moment I used IntScaled_V200 library from MyMitsubishi Data base and I think everything is ok. Also there is FltScaled_V200 in the same data base. Plcfreak, what are the differences between any saling Function block and SCL/DSCL instructions? Are there advantages?? Thanks!

[Colin Carpenter]

If your'e using IEC Developer, you're welcome to use the Scale with Parameters Function Block that I wrote the other day. It can be found in the thread here