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Questions on design of drop in replacement for typical PLC's
New Replies:
By Ed Mulligan on 3 May, 2002 - 4:58 pm -
> I like your thoughts on power 9-30VDC is good seems there is always 24V readily available....
By Bob Peterson on 3 May, 2002 - 4:54 pm -
I don't like the rackless design either. It seems to me that so many little connectors, plugs, and...
By Curt Wuollet on 3 May, 2002 - 4:53 pm -
Hi Rick
Fairly close and it's interesting in that they appear willing to unbundle the hardware....
By Steve Myres, PE on 3 May, 2002 - 2:11 pm -
I second the request for minimized footprint as long as depth can be kept within reason. I use...
By Curt Wuollet on 3 May, 2002 - 12:51 pm -
Hi Mike,
It's worth a lot.
I like the 25 pin D idea and it's a snap to implement. There are...
By Steve Myres, PE on 3 May, 2002 - 12:39 pm -
"Rackless" means that the modules plug into the sides of each other, rather than each...
By Curt Wuollet on 3 May, 2002 - 11:57 am -
Hi Steve
I've heard from both sides on rack/rackless. You'll be glad to know racks are winning,...
By Rick Daniel on 2 May, 2002 - 5:32 pm -
Check out "www.edasce.com":http://www.edasce.com and see how close it comes to your...
By Electro Mechanical Systems on 2 May, 2002 - 4:57 pm -
For what it is worth...
I personally would be happy with a conformal coated PCB assembly with no...
By Curt Wuollet on 2 May, 2002 - 3:27 pm -
I think I got that.
Regards
cww...
By Curt Wuollet on 2 May, 2002 - 2:36 pm -
T. Connolly wrote:
> As far as asthetics is concerned, it doesn't cost any more to mass
>...
By Curt Wuollet on 2 May, 2002 - 11:40 am -
Check!
I intend for the unit to be din rail mountable, the power supply will be whatever you...
Looking for device that stuffs (mutiplexes?) a number of on/off inputs into one 0-5 VDC analog input.
New Replies:
By Curt Wuollet on 3 May, 2002 - 4:50 pm -
Never mind, my brain wasn't working.
Regards
cww
...
By Hakan Ozevin on 3 May, 2002 - 2:47 pm -
Company Ziehl has such a standard product, called MUM8. You check it from...
By Curt Wuollet on 3 May, 2002 - 11:13 am -
By George you're right, I just looked at the truth table and it's not a full decoder. The principle...
By JGrumby on 3 May, 2002 - 11:12 am -
This will only work if only 1 of the 8 is on at a time. Two or more at once and your screwed. But...
By Curt Wuollet on 2 May, 2002 - 11:33 am -
why not use a straight binary encoder, 8 lines into 3. I think it's something like a 73ls147 or...
By chris on 2 May, 2002 - 11:02 am -
We don't manufacture, but I have designed various taylor-made systems to cater for the problem.
...
By Steve Young on 2 May, 2002 - 10:28 am -
Take a look at www.phoenixcon.com they offer digital to analog converters that are powered by 24vdc...
By Steve Myres, PE on 2 May, 2002 - 10:15 am -
I'm not aware of off the shelf solution for this application, but if you are unable to find one,...
By JGrumby on 2 May, 2002 - 10:14 am -
Do you have any impossible input combinations? ie two or more devices that cannot be on at the same...
I'm looking for emulator software in order to simulate PLC programs
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By Bob Peterson on 3 May, 2002 - 4:45 pm -
> 1. If you try to access a data table address via RSLinx (using the
> emulator driver) it...
By JC Blaise on 3 May, 2002 - 2:21 pm -
OK, but this soft is dedicated to Allen Bradley PLCs, doesn't it? I look for "generic"...
By T. Connolly on 3 May, 2002 - 12:38 pm -
Try
"http://www.thelearningpit.com/":http://www.thelearningpit.c om/
Never used...
By Bob Peterson on 3 May, 2002 - 11:15 am -
I have used both of these products and find they work very well. There are a couple of quirks...
By Jesse on 2 May, 2002 - 5:29 pm -
Rockwell software makes one for the Rockwell line of processors called RSLogix Emulate 5 for the...
A problem occurs occasionally, where the analogue output modules lock up with dire consequences with the variable speed drives been used...
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By Brad Hite on 3 May, 2002 - 4:42 pm -
Hello Phil,
If you are using the DAU-204 Analog output modules then I have encountered the exact...
I have implemented a continuity test, but i want to know if there is a better way with less risk ..
Two hydraulic cylinders push product into station in a machine. How to program the PLC-5 to avoid jamming? ...
I am connecting my 1784-ktx card directly to slc5/03 using DH485.
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By Theo Baarslag on 3 May, 2002 - 2:46 pm -
Hello,
I checked the documentation for that port, and apparently the RJ-connector does not have...
How can i control two actuators, for cooling and heating circuit? What can i do to prevent the actuators working against each other?
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By MC on 3 May, 2002 - 12:42 pm -
Use just one controller, split the range of the controllers output. For instance if the output is...
I would like to know if the PLC5/15 have a RS-232 serial port or it only has a DH+ port.
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By Jesse on 2 May, 2002 - 5:28 pm -
Actually the 5/15 and the 5/25 both have a 15 pin d shell port, but hey are DH+ ports. The only...
Source of a frequency calibrator/generator for PLC pulse input testing
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By mjv on 2 May, 2002 - 5:27 pm -
We use a BK Precision Model 4011A Function Generator to do that very thing.
We have used it on...
Can any body explain what is the difference between 1OO2D and 2OO2D?
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By wlmostia on 2 May, 2002 - 4:06 pm -
This document, pages 7-11, has a pretty good description of the voting schemes. Just remember that...
By Paul Gruhn on 2 May, 2002 - 11:28 am -
One out of two, with diagnostics.
Two out of two, with diagnostics.
The concept of both is pretty...
Has anyone tried to export a RSLogix 5000 project to an IEC ST file?
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By Jeremy Pollard on 2 May, 2002 - 2:48 pm -
ST is a text based construct. It should be able to be imported to ANY ST supported platform if it...
By Jeremy Pollard on 2 May, 2002 - 11:46 am -
PLC5 firmware supports ST as well. None of which is PLCopen certified I might add.
It isnt IEC...
Need a better approach to communicating with a 984 via modem...
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By Lynn Linse on 2 May, 2002 - 2:19 pm -
Ranjan Acharya wrote:
> There are actually three sets of modems for the various communications
...
By Rafael N. Jacomino on 2 May, 2002 - 11:20 am -
We have a similar customer who just upgraded a centralized Modicon 984-685e with a Quantum PLC with...
I need to calculate the sun position using ladder logic programming.
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By Jonatan Magnusson on 2 May, 2002 - 11:48 am -
Thanks! I had missed the CMPR instruction. The square root helped as well!
I have now finished...
Trying to implement advanced control techniques such as SDRE AND NLPC in PLC
I want to connect a PLC with PC using Profibus network. Should i install any software for Profibus ??? what is the process of connecting the PC with PLC using Profibus??
we have sanmar make weigh-indicator card installed
at our weighbridges. Card supply -230v ac. currently we are facing problem of sudden fluctuations in indication...
at our weighbridges. Card supply -230v ac. currently we are facing problem of sudden fluctuations in indication...
New Replies:
By CT on 2 May, 2002 - 11:06 am -
Load cells read uV from srtain gauge. I would recomend checking Shield between sensor and display....
By chris on 2 May, 2002 - 11:03 am -
1. Were they OK after original installation?
2. Have they been subject to wetness?
3. Are they...
I would like to use ethernet remote I/O with AB SLC 5/05 PLC's. My AB rep says "no can do". Any sugestions?
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By Peter Nachtwey on 2 May, 2002 - 10:43 am -
> I know that plenty of companies make ethernet remote I/O but my AB rep says that
> the...
Does anybody use any PLC control logic analysis and design methodology?
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By T. Connolly on 2 May, 2002 - 10:17 am -
An unfortunate side effect of having a laptop and PLC software available to the maintenance staff...
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