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Redundant modbus.

Hi all. I have tried to locate information regarding redundant modbus. Without any luck. Is there any one out there who...
1 comments posted 21yrs
posted by no
1 comments posted 21yrs posted by no

PLC Repair Services

PLC repair is what we do best at NyCo-Systems. In most cases repair is a more economical decision than replacement. All...
0 comments posted 21yrs
posted by service
0 comments posted 21yrs posted by service

Boiler Continuous Blowdown Control

Hey all, Has anyone ever done control of the continuous blowdown on a boiler before? Our plant has 3 100,000 lb/hr powe...
2 comments posted 21yrs
posted by curtisk
2 comments posted 21yrs posted by curtisk

Phase Margin Question for Phase Locked Loops

Hi, Ok, so i've simulated my loop filter (active Op-amp, integrator) in ADS, complete with split input resistors for im...
25 comments posted 21yrs
posted by radio913
25 comments posted 21yrs posted by radio913

Velocity Limiting Can Help or Hurt Stability

Velocity limiting in a control loop can cause a limit cycle if the the lag normally associated with the limiting elemen...
0 comments posted 21yrs
posted by dwstclair
0 comments posted 21yrs posted by dwstclair

Theory vs. practice: DC-motor controller

Suppose you have a DC-motor with encoder, that drives a small car with a gear and rack. The FRF(s) = Encoder(s)/Inputvo...
1 comments posted 21yrs
posted by not
1 comments posted 21yrs posted by not

Where To Buy Emergency Stop Buttons?

Where can I buy several inexpensive (red) emergency stop buttons? I have looked many places for such buttons and the be...
7 comments posted 21yrs
posted by LunarBrass
7 comments posted 21yrs posted by LunarBrass

honeywell eztrend

Hello, Does anyone have the file format for the Honeywell Eztrend paperless recorder log file? I want to get the data o...
0 comments posted 21yrs
posted by ericksoj
0 comments posted 21yrs posted by ericksoj

security standard of scada and rtap?

Hi, Where can I find security standard doc for scada and rtap? Thanks sam
0 comments posted 21yrs
posted by sam.wun
0 comments posted 21yrs posted by sam.wun

Not a control engineer

I'm building a robot that needs control better than I've ever needed to think about before. The details don't matter, s...
32 comments posted 21yrs
posted by physics_seeker
32 comments posted 21yrs posted by physics_seeker

Wireless or Non-Contact Motion Control Help?

I sure do hope somebody has some good ideas on this one... We are working on a prototype one-off setup for a customer t...
13 comments posted 21yrs
posted by jkelleyus
13 comments posted 21yrs posted by jkelleyus