ronboom
Guest
R
Hi all! I do validation testing for new products. The environmental validation stuff (vibration, temperature, humidity, salt fog, etc) not software validation. We manufacture instrument panel electronics (gages, lightbars, LCD screens, etc) for the marine, snowmobile, and heavy truck industries. During testing I use a lot of PLCs -- mostly for turning things on and off at different times. I did take a beginner & advanced class at the local community college; however, we never did PWM I/O. I'd like to set up O:0/2 on my MicroLogix 1200 to generate a signal to simulate a tachometer input to our snowmobile gage. I'd like to keep the duty cycle constant at 15%. I'd like to sweep the frequency from 10 to 250 to 10Hz over 60 seconds (8Hz / second). That way I could see if the gages are responding correctly while in the chambers and on the vibration table. I use a PLC for turning the idiot lights on & off and have a separate sweep function generator to send the tach signal. Space is at a premium, so I'd like to use the PLC for everything. Could someone please send me a sample RS-Logix program? Maybe a short write up?
thx,
ron -- [email protected]
thx,
ron -- [email protected]