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Control.com topic...
Networking
Originally posted by M Griffin on 11 October, 2009 - 11:18 pm
A computer virus caused serious problems recently for an Australian electric utility.
New Replies:
I guess I should add: A firewall is actually just a piece of software running on an embedded...
In response to the various posts: A firewall with no open ports (i.e. doesn't let any traffic...
Michael I don't think it is entirely fair to say that all vendors wash their hands and say it is...
In response to various posts: I was aware of the Sydney Morning Herald report, but that was one of...
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...
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...
Topic: Communications systems and equipment.
from the Instrumentation department...
Modbus RTU to TCP converter
Posted by Francisco on 14 October, 2009 - 7:49 am
RTU / TCP mapping
Topic: PLCs and related questions.
from the Wanafixit department...
PLC505 Ehernet network visibility problem
Posted by Mick on 13 October, 2009 - 2:11 pm
Want to connect a PLC to a existing Ethernet network..
Topic: Local and wide area networking in factory automation.
from the Automation List department...
Relationship Between Ethernet and TCP/IP
Originally posted by Rushi Shroff on 11 September, 2008 - 1:34 am
Ethernet & TCP/IP
New Replies:
Ethernet Address (or MAC) is number that represent Network card & TCP/IP number is number...
Topic: Local and wide area networking in factory automation.
from the Forum department...
modbus RTU dual-slave
Originally posted by dexdyne on 9 October, 2009 - 5:44 am
need to link two modbus master devices
New Replies:
ICC also sells such a gateway, which has multiple ports (2X RS-485 and 1X RS-232) that can...
By Patrick Lansdorf on 12 October, 2009 - 5:00 am -
Hi dexdyne, HMS has a gateway that will fit your application, connecting two Modbus RTU...
Topic: Communications systems and equipment.
from the Forum department...
WDPF QLC to AB 1770KF2 Module
Originally posted by Monrovian8 on 28 August, 2009 - 12:17 am
Need Assistance Integrating a WDPF QLC Card to an Allen Bradley 1770KF2 module
New Replies:
Hello, have you reviewed the information in Westinghouse Manual U0-1130? ...
Topic: PLCs and related questions.
from the Forum department...
PLC Recomendations
Originally posted by Mike Williams on 23 March, 2009 - 4:31 pm
Need a PLC that runs on 12 volts and supports IEC 1131-3 Structured Text.
New Replies:
Beckhoff has a large range of controllers that use their Twincat IEC 6-1131 software, allow you to...
Topic: Communications systems and equipment.
from the Forum department...
Beckhoff TwinCAT TCP/IP sockets?
Posted by arg on 9 October, 2009 - 4:34 pm
Does TwinCAT have Function Blocks for TCP/IP?
Topic: Communications systems and equipment.
from the Multiple modbus masters department...
Modbus master control
Originally posted by Luís Soares on 25 September, 2009 - 10:15 am
How to put to master in the same Modbus bus RS485
New Replies:
We manufacture a Gateway that allows two Masters over the same Modbus Slave devices. It is our DX...
It is possible to use master multiplexer. For example:...
In the modbus network, there should no more than one master running at the same time....
Check out the PLC09 Arbitrator (www.calta.com). It was developed for exactly this application. ...
Hi There, HMS makes a gateway that is Modbus RTU slave to Modbus RTU slave. Connect one master...
Hi, I think that you would have to find a way to sync the two masters somehow. When one of the...
Topic: Local and wide area networking in factory automation.
from the Maintenance department...
Remote Mark V
Originally posted by DAMENE Amar on 7 October, 2009 - 6:17 am
Remote of Speedtronic Mark V
New Replies:
OPC is your best bet. Talk to the various OPC makers to see if any of them will run on WinNT...
Topic: Local and wide area networking in factory automation.
from the student department...
ABB dcs
Posted by kanchan on 1 October, 2009 - 12:34 pm
networking of ABB DCS AC 800 F
Originally posted by Neroboi on 30 September, 2009 - 2:52 am
If i send the command(010300210001, crc, crc) using serial port in VB.NET. I don't get any response.
New Replies:
The tutorial actually is great and should answer all you questions but just to add... Point 2.) ...
> 1.) You have got to set up the port - Port Number, Baud rate, start/stop bits, data bit,...
Unfortunately you are a long way off the mark. 1.) You have got to set up the port - Port...
I am a newbie also, maybe you are closing the port before info or string is read. vb has examples...
Topic: Human-Machine Interface and SCADA.
from the connectivity of hmi department...
ABB DCS Connectivity
Posted by Self on 29 September, 2009 - 12:57 pm
Connectivity of HMI & AC 800F with multiple nodes in the network using Profibus cable.
Topic: Communications systems and equipment.
from the Department of Insanity department...
S7 as a Slave/Master
Posted by Patrick Beckett on 28 September, 2009 - 3:54 am
S7 313C-2DP set as a DP Slave but a Master also appears on the network at same node
Topic: Communications systems and equipment.
from the Forum department...
AB MicroLogic as Modbus master
Posted by Larry B on 26 September, 2009 - 5:37 pm
I would like to see some sample code. where a micrologic 1100 is being used as a Modbus master.
Topic: Local and wide area networking in factory automation.
from the Forum department...
USB Modbus Plus adapter
Originally posted by Gbrown on 24 September, 2009 - 7:29 pm
Does anyone know of multiple vendors of USB modbus plus devices?

New Replies:
I work with with this adapter. Work fine but if you connect them to a different port it will get...
It sounds like you have had some personal bad experience with this. Can you expand on what...
USB is not suitable for SCADA communications. There is a reason why there is so little support for...
This module works fine. Only issue is to use the same USB port all the time. The driver only...
Topic: Local and wide area networking in factory automation.
from the Forum department...
use usb arcnet with TCI and cimplicity
Originally posted by Luca C. on 16 April, 2009 - 8:15 pm
Using a usb-arcnet coax to connect a notebook with TCI to a mark V
New Replies:
Hello Everybody, I'm very sorry for my late reply. What I can tell you guys so far is, that I've...
Sir, May I have the information too ?? ( to connect to mark-V(LM) via a ...
Topic: Communications systems and equipment.
from the PLC department...
DF1 full duplex to USB
Posted by Harish on 25 September, 2009 - 3:03 pm
Communicating my Allen Bradley PLC with DF1 configured processor.
For DF1 full duplex is it 9300-USBS? or any other converters are available
Topic: Software, including programming, OS issues, etc.
from the Forum department...
FactoryTalk Historian server
Originally posted by Igor on 24 September, 2009 - 11:54 am
Problem connecting to Factorytalk historian server.
New Replies:
Make sure you have the server name exact, and that the users names and computers to use the system...
Topic: Software, including programming, OS issues, etc.
from the Forum department...
ModBus in PLC
Originally posted by Guilherme Marquesini on 22 September, 2009 - 10:30 pm
How the protocol is implemented in a PLC?
New Replies:
Hello, Try the websites : www.modbus.org www.modbus.pl Regards Andrzej...
Topic: Local and wide area networking in factory automation.
from the Forum department...
Clone CIMPLICITY HMI (4.01) & TCI
Posted by yen on 24 September, 2009 - 1:50 pm
Clone to new OS with new hardware or Clone to new hardware with same OS?
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