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The threads that wouldn't die...
- PC reliability?
- Windows, real time
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- Software quality
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- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
Fortune
Alden's Laws:
(1) Giving away baby clothes and furniture is the major cause
of pregnancy.
(2) Always be backlit.
(3) Sit down whenever possible.
(1) Giving away baby clothes and furniture is the major cause
of pregnancy.
(2) Always be backlit.
(3) Sit down whenever possible.
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Posts from...
Today, Saturday, November 7, 2009
I have some problems on the TCI.
it stops when the operating system of the HMI start.
it stops when the operating system of the HMI start.
New Replies:
CSA please can you check my problem again.....
Dear all please,
in the TCI log I found this message
LICENSE KEY MISSING: TCI requires a...
Dear Mr. Damon
can you go on:
start>all programs>GE Control System...
By DAMENE Amar on 4 November, 2009 - 4:21 am -
Dear sir,
I have the same problem with our HMI and my laptop so. And I did not find the...
Dear sir,
First I would like you to know that we receive the unit from another company. and this...
You haven't told us when this problem started and what was changed to create this problem.
Are...
Need low cost fuel flow sensor for mini fuel transfer pump in developing countries.
New Replies:
By hemal on 7 November, 2009 - 5:31 am -
We manufacture such litre measures in MS/ Brass and SS. All would cost under $25/- and all can be...
By Roy Matson on 5 November, 2009 - 11:11 pm -
Here's an idea. I remember way back gas pumps used to have a glass container on top, probably held...
By Paul Yuan on 5 November, 2009 - 8:10 pm -
We may be of any help, may you pls help send an email to:
paulybg01 [at] gmail.com.
We need...
Siemens S7 programming
New Replies:
By curt wuollet on 7 November, 2009 - 2:29 am -
Hi Michael
Yes, if I were reaching hard for nice things to say about step 7, I do concur that it...
By M Griffin on 6 November, 2009 - 3:53 am -
In reply to curt wuollet:
I would say the Siemens Step-7 software is quite good (by the...
By curt wuollet on 5 November, 2009 - 3:01 pm -
Of course, there is nothing preventing Siemens from making decent pragmatic tools for these PLCs....
By DD on 4 November, 2009 - 6:47 pm -
I tend to agree with Curt. I work mainly in maintenance mode, keeping the existing processes going...
looking for help picking a control unit and writing PLC code
AVR control of islanded systems
New Replies:
Try to check the basics of Real power, apparent power, and reactive power. If the power factor of...
When you're operating as an island, the power factor is what it is. If you try to control power...
from the Forum department...
Communication between Tricon PLC and Siemens S5 PLC via Modbus TCP/IP protocol
Communication between Tricon PLC and Siemens S5 PLC via Modbus TCP/IP protocol
How to select a control valve?
No fault occurence on delta corner grounded transformer.
Does anyone use CDM for their GTs with DLN?
New Replies:
I was inquiring about a 7EA run as a peaker with DLN1 system. that goes out of emission compliance...
Way too little information provided here.
How do you operate your machine? Base Load? Load...
reason for high and low lube oil temperatures in lube oil header and the measures to control the parameters
New Replies:
You really need to provide more information when you post a question like this for a proper...
Need explanation of Speedtronics partial load control
New Replies:
By definition, Base Load is full load. Anything less (preselected load, manual setting) is partial...
Addressing Problem with Modbus/TCP
New Replies:
By M Griffin on 6 November, 2009 - 3:36 pm -
To add to my previous reply, "coils" are read-write and are normally used as outputs....
By M Griffin on 6 November, 2009 - 3:30 pm -
According to page 7 of your document, for n=64 the coil address are:
9577-9584 On/Off setting
...
By ParagonIndore on 6 November, 2009 - 12:22 am -
Thank You for your reply.
I know the address is preassigned. That's what i am asking what will...
By M Griffin on 5 November, 2009 - 12:09 pm -
That document describes a module which converts between Modbus and TSCNet. According to the...
By ParagonIndore on 5 November, 2009 - 4:43 am -
http://74.125.77.132/search?q=cache:Rj0LgiQ3ie8J:www.pragoclima.cz/fil es/vrf/sm_modbus_tcbifmb640tle...
I agree, sounds like a block of addresses. For the first address in a table the protocol reads 0,...
By M Griffin on 30 October, 2009 - 4:15 pm -
The "1" digit on the front of the address might be just a "type" indicator. The...
about hunting of generator
New Replies:
Generators aren't allowed to use weapons, therefore they can't hunt.
Seriously, the prime mover...
By ananymous on 6 November, 2009 - 5:38 am -
Among most Problems, Generator Hunting mainly is due to Governor Mal-Fuction. So check your...
Looking for device of some sorts that can look at the peak value from a deflection sensor and hold the value for a set amount of time?
New Replies:
By Brian Beal on 6 November, 2009 - 1:49 pm -
Use the voltage output option, and put a capacitor across it. That will act as a filter and smooth...
By Walt Boyes on 6 November, 2009 - 9:54 am -
Get a frequency divider. Most of the I/O companies make them. They are also known as pulse scalers...
By M Griffin on 6 November, 2009 - 1:48 am -
What you want is a vibration monitoring system. Forget about the Banner sensor for the moment. You...
Hi
may be fast data logger is an option? check google for data logger.
hope this helps
...
By curt wuollet on 5 November, 2009 - 10:00 pm -
First, I'm surprised that the sensor is that fast. Second, what you are looking for is probably not...
How many maximum loops can be connected to SLC500 analog output 4-20 ma channel.
New Replies:
Depending on the features available in the drives that you have, you may want to consider the...
By Roy Matson on 6 November, 2009 - 10:46 am -
First of all you need to determine, what is the impedance of the input, as others have stated in...
Hi Rodney Wirtz, Curt Wuollet and Bob Peterson,
Thanks for your replies. They are very useful...
Here's a quick answer.
- Each of the drives should be connected in series (I assume the obvious...
By curt wuollet on 5 November, 2009 - 3:22 pm -
Quite possible. Assuming 250 ohms burden for each input, four would be 1000 ohms. This will drop 20...
By bob peterson on 5 November, 2009 - 1:11 pm -
If they are in a loop, all the drives would see the same signal.
It could be that with four of...
DEHN Blitzductor CT ex(i) or DEHNconnect RK (i) Surge arrestor Selection in Ex(i) loop
Two OIU's crashed at our facility and no matter what parts I throw at them, they won't come back.
Can only read 6 registers from Controlotron 1010 flow meter via Modbus
New Replies:
Yes, If you are experiencing a communication failure and the active light stays on then you will...
By Paco on 5 November, 2009 - 4:26 pm -
FUS1010 Problems with Comm Card for Modbus.
Make sure you have the latest Firmware on the card....
By Angel on 5 November, 2009 - 4:47 am -
Hello everyone,
I have the same problem as the first entry.
I have a 1015N-5M card assembled...
Problem with forced coils in Quantum Proworx
MBA project- Gathering information on what aging automation systems are present in plants and the mechanism to dispose of no longer used parts.
Does anyone here has an experience using simplex device for Fiber Optics?
New Replies:
By Paul Wacker on 6 November, 2009 - 9:49 am -
Most likely you are referring to Wavelength Division Multiplexing (WDM), which uses different...
Problem facing in level measurement
from the Manager - Instrumentation department...
SIL-2 Certified SIS transmitters Diagnostics integration in ESD system
I want to know if it a must to integrate HART diagnostics from SIS transmitter within the Plant asset management system to meet Target SIL
New Replies:
Giriskant,
To my knowledge no credit has ever been claimed, with respect to SFF, for any...
Thanks Dave for your reply on my query. Yes, it helps to clarify the matter. I was only worried...
Dear Girishkant,
> Is it OK in the above situation that I use a single SIL-2 transmitter...
How to setup a good PID controller for dc motors you do not have information about. All the motor parameters are unknown. Is it possible to achieve all the motor parameters somehow?
New Replies:
By Ken E on 6 November, 2009 - 8:09 am -
What type of feedback are you using to control the DC motors? If you use
a decent encoder to track...
Connecting to Exd enclosure
Problems with comms between Citect & ABB PM856 PLC, using COMLI.
New Replies:
By Sathasivam on 6 November, 2009 - 3:24 am -
Hi,
Have you solve your problem as dated November 2008 to establish communication between Citect...
Hi everyone, I'm the "designated volunteer" that will need to make modification to a Modicon system.
New Replies:
Hi
below is a link for the Proworx nxt user guide :
...
I'd like to pull data from the Telemecanique Zelio Logic Relay.
New Replies:
By chud on 6 November, 2009 - 1:15 am -
If you want to use modbus you must buy a modbus expansion unit to plug on the side of the zelio...
If you need a Modbus and OPCServer converter, check out the FieldServer OPCServer from...
By DanMuller on 5 November, 2009 - 8:47 am -
I would be surprised if you find a freeware server that will do the job. If the one you have is not...
Thanks Wassim for your response,
I regret to inform you that the link you posted is reported as...
By Wassim Daoud on 30 October, 2009 - 3:06 pm -
Try this OPC Server... and let me know how it goes
...
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