Autor Thema: PLC programming help  (Gelesen 4149 mal)

Offline rahul_bitla

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PLC programming help
« am: August 12, 2005, 15:43:58 Nachmittag »
Hi,
I have a 10 bit Easy 512-dc-rc with 2 analog inputs. Also I have a potentiometer with 0-30 mm range & wanted to give this linear displacement input to the moeller unit (easy 512 dc-rc).

All I want to know is how much time does the potentiometer take to travel from lets say 5mm to 25 mm. I know we can write a program in the software (EASY SOFT V6.10 BAsic), so that the PLc can spit out the time taken for the specified travel.

Since I am an engineer I am not really an expert in PLC porgramming, but i learned  the online tutorials & wrote a program for the above mentioned task.

I used analog comparators for comparing the analog values coming in from the potentiometer. I dont understand how to use timers to give me the desired time period of travel. I tried looking into the help menu which doesnt really help. even if I use a timing relay how do I give the setpoint parameters

Variables or Constants ?
What kind of mode do I use because I dont need a delay ?


Your help would be greatly appreciated in this regard

Could somebody help me giving directions to write this little program ?

Thank you