Control.com - Nerds in Control
Trying to Connect a Telemecanique Twido to a Delta Controls Bacnet Controller. Engineers say they both talk modbus so it should be easy.
New Replies:
By Joe Jansen on 8 March, 2010 - 8:16 pm -
Are you suggesting that he add a PC to the system just to communicate between a PLC and the BACnet...
By Wassim Daoud on 8 March, 2010 - 11:33 am -
This is easily done with OPC. OPC bridges your data sources to deliver your data. All you need to...
By Dan on 6 March, 2010 - 9:23 am -
What are the "invalid signals on his end" that the master is providing?
The failure to...
Creating homegrown PLC hardware
New Replies:
By curt wuollet on 8 March, 2010 - 3:14 pm -
I thought I'd summarize what the system looks like so far for those that don't want to try to pick...
By curt wuollet on 8 March, 2010 - 1:30 pm -
There is a newer model called Guru Plug or something like that that exposes more ports and has an...
By Ken E on 8 March, 2010 - 8:19 am -
Ubuntu Server is somewhat lighter. Years ago I went down the path of making a lightweight distro...
By curt wuollet on 8 March, 2010 - 1:13 am -
Again catching up, the Beagleboard _does_ run Ubuntu. I would attempt for something a little...
By curt wuollet on 8 March, 2010 - 1:08 am -
Catching up a bit, I looked at the Sheeva stuff. This is ARM 7. I'm not sure if 7 has a MMU and...
By William Sturm on 7 March, 2010 - 2:37 pm -
Curt says: "Nearing the end of what I can do for free, so I took some time out from hardware...
By curt wuollet on 7 March, 2010 - 12:54 am -
Nearing the end of what I can do for free, so I took some time out from hardware to look at...
By William Sturm on 5 March, 2010 - 7:55 am -
Technologic or EMAC come to mind for embedded Linux boards at a reasonable price point. Or just...
By curt wuollet on 4 March, 2010 - 10:48 pm -
Well, I worked over the input board to use .150" connectors which will allow for 23...
By curt wuollet on 3 March, 2010 - 2:24 pm -
Hi Bill,
I suppose you can design boards with whatever you want. But, besides the issue with...
By curt wuollet on 2 March, 2010 - 11:41 pm -
The 1" backplane just passed the Advance DFM check and is ready for fab after my final check.
...
By William Sturm on 2 March, 2010 - 5:22 pm -
Curt said: "Perhaps another version with the decoder for those who have a shortage of IO...
By William Sturm on 2 March, 2010 - 5:09 pm -
Curt said: "The gEDA suite is the only contender here, I'd much rather spend money on the...
Having difficulty with Modbus communications form Modbus card to Modbus server.
New Replies:
By Wassim Daoud on 8 March, 2010 - 11:23 am -
Have you tried MatrikonOPC Server for Modbus? it's easy to use. Here is a link to download it for...
Installing Prosoft 3600-MBS Modbus cards into 825-MM (CET4) Smart motor manager relays - need documentation for Modbus Address map registers
Ladder logic simulator software portable
New Replies:
By Julian Kovacic on 8 March, 2010 - 4:13 am -
Download the free software called ZelioSoft by Schneider, its the software that you use to program...
By Mark on 7 March, 2010 - 8:59 am -
Hi,
Have you looked at:
PeakHMI MODBUS Relay Ladder Logic
Good luck,
Mark
...
By cikenkari on 6 March, 2010 - 9:25 pm -
thanks bro :-), but it's not free :-(...
By Tobias on 6 March, 2010 - 2:36 pm -
Is this what your looking for? http://thelearningpit.com/
...
> but, I mean software that i can customize the ladder and have simulation on it, dynamically....
By cikenkari on 5 March, 2010 - 5:50 pm -
Thanks Peg,
but, I mean software that i can customize the ladder and have simulation on it,...
Hi,
Have you checked out Controlwiki? It contains an archive of PLC code:
...
I need to control a FC51 Danfoss VFD with LS PLC.
I need to start , stop & jog the drives.
I need to start , stop & jog the drives.
New Replies:
By indrajeet tupe on 8 March, 2010 - 1:09 am -
hello sir,
i tried the same format which you have mentioned but i'm unable to receive the...
Communicating with 20comm-m modbus tcp adapter in a Allen Bradley Power Flex 70 Drive
New Replies:
The AB documentation is only showing you the offset within the 4x Modbus Register range. The...
By M Griffin on 6 March, 2010 - 1:45 pm -
The Modbus *protocol* (what gets sent over the wire) always starts numbering at 0. However, the...
Looking for a free modbus driver that will work with .NET.
New Replies:
http://pvbrowser.org is HMI/SCADA under GPL running on almost any operating system.
Modbus is...
It's been a year since thie post how did things work out. I am at about the same place now that you...
Requesting suggestions for a temperature sensor for a nano-PLC.
I have read that if you want to connect a Unity Premium PLC with Vijeo Citect, it is better to use OFS instead of direct Modbus TCP Driver, do you know why?
New Replies:
Hi Gonzalo,
The simple logic behind what you have mentioned is that - if the system have a built...
We want to use our SCADA application to communicate with S7-300 CPU 315-2DP which has two ports.
New Replies:
Dear Hassan,
I thought you do not want to touch the existing. but anyway Yes, you do have and...
By Hassan Tariq on 4 March, 2010 - 1:59 pm -
Dear Randy,
Thanks for the solution. But beside that Do we have the option to extend the MPI...
Dear Friend,
If you don't want to disturbed your existing setup for communications with MPI and...
How to control a Festo PLC via TCP/IP instead of serial with PHP?
P-P modbus or multidrop connection Siemens CP 441
New Replies:
as long as all your partners are MODBUS slaves and have RS485 interface, you can load Siemens...
Allen Bradley PLC Application
New Replies:
Don't know, but Modicon Quantum processors can integrate SQD racks on the remote IO Bus....
Com525 software package for the communications of CP524 in Simatic S5 135U PLC
Program in Allen Bradley 5/20 PLC looses program after first execution of DG program
New Replies:
By karanth on 3 March, 2010 - 11:46 am -
can u just elaborate "just after the operation, "
do u mean that after starting dg?
...
Can you use a router (Linksys BEFSR81) to filter IP addresses between PLC's that are networked together?
New Replies:
By Tom on 2 March, 2010 - 10:04 pm -
Thanks, but I couldn't get it to work using these ports. I thought I might be able to at least see...
Your use of this site is subject to the terms and conditions set forth under Legal Notices and the Privacy Policy. Please read those terms and conditions carefully. Subject to the rights expressly reserved to others under Legal Notices, the content of this site and the compilation thereof is © 1999-2010 Nerds in Control, LLC. All rights reserved.
Users of this site are benefiting from open source technologies, including PHP, MySQL and Apache. Be happy.
Fortune
In the beginning was the word.
But by the time the second word was added to it,
there was trouble.
For with it came syntax ...
-- John Simon
