Control.com - Nerds in Control
time synchronization in DCS system
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By Y.K.JARIWALA on 16 October, 2009 - 2:00 am -
We are not very sure , but time synchronization plays very critical role in Multiple Node system we...
jianjian2112,
the target of time synchronization in DCS from GPS that if we have more than one...
need help ASAP
A computer virus caused serious problems recently for an Australian electric utility.
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By Matt Warshawsky on 15 October, 2009 - 4:24 pm -
It was never my intention to simply pass the same traffic over serial, but instead to use a simple...
By M Griffin on 15 October, 2009 - 2:06 pm -
In reply to Matt Warshawsky: I don't think we need to go to the lengths of installing serial...
Michael,
I think that I am more or less in agreement with your sentiment. The problem I have is...
By Andrey Romanenko on 15 October, 2009 - 8:08 am -
>OK, here is an idea to solve the problem: instead of connecting the business network and the...
By Matt Warshawsky on 15 October, 2009 - 3:32 am -
OK, here is an idea to solve the problem: instead of connecting the business network and the...
By Matt Warshawsky on 15 October, 2009 - 3:18 am -
Yes, you are correct on everything you said. In my opinion, the reason there are so many security...
By M Griffin on 14 October, 2009 - 8:19 pm -
In reply to DaveMH: You said: "Ultimately the responsibility for security lies with those on...
By M Griffin on 14 October, 2009 - 7:17 pm -
In reply to Matt Warshawsky: It's just as well that you added those remarks in your second reply,...
By Matt Warshawsky on 14 October, 2009 - 12:35 pm -
I guess I should add:
A firewall is actually just a piece of software running on an embedded...
By Matt Warshawsky on 14 October, 2009 - 12:14 pm -
In response to the various posts:
A firewall with no open ports (i.e. doesn't let any traffic...
By DaveMH on 14 October, 2009 - 8:21 am -
Michael
I don't think it is entirely fair to say that all vendors wash their hands and say it is...
By M Griffin on 13 October, 2009 - 9:35 pm -
In response to various posts: I was aware of the Sydney Morning Herald report, but that was one of...
By M Griffin on 13 October, 2009 - 8:45 pm -
In reply to Dilip: Standard routers and firewalls can help somewhat with older types of worms, or...
Hello Michael,
Thank you for posting this as I am trying to keep some kind of log on incidents...
And here
...
We are also a 24x7 manufacturing unit having three standalone SCADA running on Windows platform. I...
By Andrey Romanenko on 13 October, 2009 - 8:30 am -
Hello,
I agree with Michael's ideas on the replacement of the bridge with a more robust OS and...
By M Griffin on 13 October, 2009 - 3:06 am -
In reply to RK Sastry: I can imagine a number of ways to improve your system. However the fact that...
I am also interested in knowing the details about this case. In our installation, the SCADA/PLC...
RTU / TCP mapping
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By M Griffin on 14 October, 2009 - 6:34 pm -
In a typical Modbus RTU to TCP gateway the data stays the same. It's just the wrapper around the...
By Fred Loveless on 14 October, 2009 - 2:32 pm -
Yes it will remain the same. The address structure is exactly the same....
Abb station does not get "enter" command
Customer has an old (30+yr) system with Cutler Hammer D800 Message Displays and needs software.
Vijeo and windows xp sp3 wont play nice.
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By Chimwana on 13 October, 2009 - 9:32 am -
Hello Cliff would you please send me the solution as well my address is chimwana [at] gmail.com...
Addressing patterns for Quantum Digital Output Module
We need to understand how works AND voting for 2 channels in a relay module of 3500 system.
Need a PLC that runs on 12 volts and supports IEC 1131-3 Structured Text.
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Beckhoff has a large range of controllers that use their Twincat IEC 6-1131 software, allow you to...
Does TwinCAT have Function Blocks for TCP/IP?
Using an old DOS program that relies on serial ports on a new PC without one.
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If you want to print reports from the DOS program you can play with network printers assignments...
I am Having a program back up of device XBT-PM 027110. when I am trying open this with XBT L100 ver 4.2 then it is saying it is not XBT L file
Interested in anyone's experience with Alarm Notification Software
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Thanks to all who responded to my post.. the comments were very helpful...
Operate MODSOFT under Vista.
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By keberharter on 7 October, 2009 - 7:52 am -
Without a lot of grief MODSOFT will not run under Vista. Even if you get it to run downloading...
By M Griffin on 6 October, 2009 - 1:41 pm -
I did a quick Google search, and the first link was to control.com where someone was complaining in...
had a brief look at this problem. Seems that MODSOFT (i have never used it) is an old DOS program....
(Originally posted Tue, 25 Aug 1998) I am interested if anyone in the group has any specific reasons why they are still buying PLCs and not PC based controllers.
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By moosty on 7 October, 2009 - 3:51 am -
Windows is not stable at all, there is an article in the link below:
...
By M Griffin on 6 October, 2009 - 2:39 pm -
In reply to Red: So, your problem seems to be the OS used in those cases? I won't argue with you...
By James Ingraham on 6 October, 2009 - 10:49 am -
Red, I have to moderately disagree, despite the fact that my company has almost entirely migrated...
By Allan Evans on 5 October, 2009 - 5:01 pm -
Hear, hear Good to read some sanity occasionally.
...
By Red on 5 October, 2009 - 2:56 am -
I have 30 years experience in Control systems including over 10 years as a Programmer Analyst...
Comparison
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By Mohammad on 7 October, 2009 - 3:21 am -
all products from PAS passed away from our company due to lack of support and lack of resources...
Graphical representation
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Re: Sorry, I was not disagreeing with your last post, but rather your first one and the part about...
Is it possible to connect Siemens AO card 4-20mA output to Siemens 4-20mA AI card?
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Hi guys,
Thank you very much for the suggestions:)
My AO card model is 6ES7-332-5HF00-0AB0
and...
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