Control.com Topic - Communications

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from the Automation List department...

Ethernet/IP Communication

Originally posted by Ananth on 27 March, 2008 - 2:26 am

I would like to discover all Ethernet/IP enabled devices from the current network.

New Replies:

By Zohar on 9 September, 2009 - 7:28 pm -

So where can I get The EtherNet/IP Specification by ODVA for evaluation? Can anyone send me a...

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from the Electronic Lab department...

Application Protocol Specification of MODBUS

Originally posted by Prab on 9 September, 2009 - 7:56 am

Implemention of MODBUS application protocol specification

New Replies:

By M Griffin on 9 September, 2009 - 12:50 pm -

Your question is a bit ambiguous so I may not have interpreted your question correctly. However,...

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from the Automatics department...

Connect TSX Micro with Scada Intouch

Originally posted by Aida on 31 August, 2009 - 2:16 pm

How to establish communication with PLC TSX MICRO and Scada Intouch

New Replies:

By Ashraf on 9 September, 2009 - 12:26 pm -

Of course you will get a communication error if the Micro PLC is connected by its TER Port using...

By Schneider Italy on 8 September, 2009 - 6:11 pm -

If you are trying to connect the SCADA to the TER Port, you'll have problem because it doesn't...

By Aida on 7 September, 2009 - 2:21 pm -

Hello. We have one PLC TSX Micro 3721 version 2.0 and one plc tsx micro version 2.0 too. The...

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from the SCADA Telemetry. department...

Licensed-FREQ Ethernet Radio

Originally posted by RNJ on 7 September, 2009 - 4:44 pm

Licensed-FREQ Ethernet Radio for USA SCADA application.

New Replies:

By SCADAmetrics on 8 September, 2009 - 10:17 pm -

One other thing... The MDS SD9 is, I believe, backwards-compatible with the 9710's that you are...

By SCADAmetrics on 8 September, 2009 - 4:50 pm -

I have experience with the GE/MDS SD9, and it does exactly what you are asking for. IP over...

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from the Automation department...

FC51 Danfoss VFD MODBUS

Originally posted by Derik on 7 September, 2009 - 2:12 pm

I need to control a FC51 Danfoss VFD with LS PLC.
I need to start , stop & jog the drives.

New Replies:

By Bruce Widell on 8 September, 2009 - 11:41 am -

I recommend you write the entire 16 bit control word versus only the start bit. This would satisfy...

By Derik on 8 September, 2009 - 1:05 am -

Thank you I will try it & post the result ...

By Harvard on 7 September, 2009 - 5:34 pm -

Your poll should like like this: 02 05 00 06 FF 00 6C 08 ...

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from the Why Not? department...

Report by Exception in Modicom PLCs?

Originally posted by GBrown on 2 September, 2009 - 2:10 pm

I want to understand whether it makes sense to convert to a report by exception basis in PLCs and whether it is even possible?

New Replies:

By M Griffin on 7 September, 2009 - 1:07 pm -

From what I remember about DF1, if you get rid of the AQ/NAQ then you have the same cycle as...

By SCADAmetrics on 7 September, 2009 - 3:06 am -

Mcafone, This doesn't really answer your question, but FWIW... If your AB processors and RsLinx...

By M Griffin on 6 September, 2009 - 11:19 pm -

Yes, it is possible to use one bit as a flag to indicate that data has changed since the last poll....

By Mcafone on 6 September, 2009 - 6:53 pm -

I am also originally from an industry where update times are a little more critical (industrial...

By Ashraf on 5 September, 2009 - 8:01 am -

You are welcomed G Brown, I only wish that I could be of more help to you. But Industrial...

By G Brown on 4 September, 2009 - 12:25 pm -

I just wanted to thank you Ashraf and M Griffin for your responses. ...

By M Griffin on 4 September, 2009 - 12:37 am -

As another person has mentioned, there is only so much performance you can squeeze out of a 1200...

By Ashraf on 3 September, 2009 - 4:58 pm -

There is nothing much which you can squeeze out of 1200bps. This is a very low bandwidth, and it is...

By G Brown on 3 September, 2009 - 11:54 am -

Ok, Maybe I come from an environment of complexity, because we would never send back all the analog...

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from the Which HMI do you simply hate? department...

TOP 10 list of WORST HMI & SCADA

Originally posted by Luciano Dell'Orfano - RTS Argentina on 12 October, 2002 - 9:35 am

I know everyone has their personal preferences, but I think it would be more interesting to discover which software is the worst...

New Replies:

By Harry on 7 September, 2009 - 11:00 am -

I have over 8 years experience with PARAGON. I am specialized in Fermentation and Bioreactor...

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from the Forum department...

140NOE211 Quantum Ethernet

Originally posted by Robert on 7 September, 2009 - 6:24 am

Is Modicom 140NOE211 Quantum Ethernet TCP/IP Module i full duplex or half duplex

New Replies:

By chud on 7 September, 2009 - 10:49 am -

I'm speaking under correction but I'm sure it is both. It automatically detects half or full...

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from the Forum department...

activating a serial port in c

Posted by diyon on 7 September, 2009 - 5:18 am

I'm trying to access a microcontroller connected to a PC via a serial port

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from the Forum department...

ABB Freelance simulation

Posted by Rasool on 5 September, 2009 - 4:21 pm

Simulation ABB freelance

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from the Forum department...

Send & receive custom messages to slave

Originally posted by Muditha on 3 September, 2009 - 2:03 am

I need to send this message from ladder program to this slave and receive the answer message to PLC or PC

New Replies:

By M Griffin on 5 September, 2009 - 1:41 pm -

All you've told us is that you have successfully sent a Modbus request from some sort of PC or PLC...

By Muditha on 5 September, 2009 - 1:28 am -

yes, I need to send this message to Slave Device ( Digital Multimeter ) 08 04 00 0F 00 02 41...

By M Griffin on 3 September, 2009 - 12:49 pm -

You have provided quite a bit of detail. However, you have neglected to include an actual question....

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from the Automation List department...

Modbus communication with TWIDO

Originally posted by Damian on 9 April, 2007 - 12:23 pm

Can anyone give an example of a program in which TWIDO acts as a master Modbus??

New Replies:

By Ashraf on 5 September, 2009 - 8:16 am -

Jorge, The answer is straight forward. Use the EXCHx Block in TwidoSoft. The Twido Manuals...

By JORGE LUIS TOVAR GOITIA on 4 September, 2009 - 5:56 pm -

Good afternoon!! I hope you're doing well!!...I'm trying to set a comm among a Twido PLC used as...

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from the Automation List department...

Delta PLC Communication

Originally posted by ana on 1 February, 2008 - 11:52 pm

How to communicate with PLC

New Replies:

By Delta PLC Communication on 5 September, 2009 - 4:42 am -

Hi Shriram Pendse.. Can u give me some sample coding to connect delta plc dvp-10sx series using...

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from the Forum department...

Modbus TCP/IP with Scada

Originally posted by ts on 25 August, 2009 - 4:12 pm

Does the Modbus TCP/IP Client Server model make master/slave configurations irrelevant?

New Replies:

By M Griffin on 4 September, 2009 - 8:40 pm -

A client ("master") pushes data to a server ("slave"). When and how frequently...

By ts on 4 September, 2009 - 7:41 pm -

If I implement this slave functionality via software or hardware can I now receive data updates...

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from the Forum department...

PLC Premium System word %SW and NModbus

Posted by stefano sormanni on 4 September, 2009 - 10:53 am

Can I access to the %SW via NModbus?

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from the CAN I do it? department...

CANOpen

Originally posted by Bill Code on 31 August, 2009 - 6:25 pm

CANOpen technologies

New Replies:

By Leonid on 4 September, 2009 - 9:09 am -

Beckhoff has wide range products for many popular field buses including of course CANopen one. ...

By Heinz-Jürgen Oertel on 3 September, 2009 - 9:54 am -

> I would assume that drivers normally come with the interface boards. < Besides some...

By Heinz on 3 September, 2009 - 9:50 am -

Another source is : http://www.can-wiki.info at least for boards and drivers and higher layer...

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from the Automation department...

Communication Offline error message using controllogix

Originally posted by Don on 2 September, 2009 - 9:29 am

Lost of Network Communication when using controllogix

New Replies:

By Don on 4 September, 2009 - 1:06 am -

Hi All, Thank you for the reply. The Redundancy System PLC 1 and PLC 2 is our Anode...

By Ken Roach on 3 September, 2009 - 4:52 pm -

Can you explain exactly what device or software package is displaying the "Communication...

By Russ K on 3 September, 2009 - 4:45 pm -

Just a thought... I have found that RJ45 connectors in use for multiple years sometimes exhibit...

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from the DCS Interface department...

Ovation Serial Interface to Control Logix

Originally posted by Ann Roberts on 14 May, 2009 - 3:33 pm

Serial interface between Allen Bradley's Control Logix and Emerson Ovation DCS

New Replies:

By scadametrics on 3 September, 2009 - 10:04 pm -

Ann, I have no specific experience with the problem as stated, but I suspect that the connection...

By yjdoo on 3 September, 2009 - 1:59 am -

Hello MAKEVI Can I use Ovation TCP/IP driver to get data from ovation DCS? Please any...

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from the PLC department...

Modicon Quantum programming Unity

Originally posted by Tiquick on 31 August, 2009 - 6:40 pm

Need information on the Unity's connectivity

New Replies:

By Ashraf on 3 September, 2009 - 5:12 pm -

The answer is NO. ONLY ONE USER AT A TIME!! Also, I wonder how could somone be in 2 places at...

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from the Manufacture department...

Connecting Excel to Step 7

Originally posted by Plácido Pérez on 2 September, 2009 - 11:56 am

Hi, can anybody help me please..? I need to do a connection Step 7 to Excel.

New Replies:

By Mustafa Al-mosawi on 3 September, 2009 - 11:01 am -

Firstly, I always ask - why are you interested in reading and writing from Excel? What is your...

By pvbrowser on 3 September, 2009 - 4:30 am -

If you are able to do some programming by your own you could use ...

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from the Automation List department...

MODBUS Bit Order

Originally posted by Dan Marr on 6 August, 2008 - 12:56 am

Modbus Bit order: LSB to MSB (Left to Right Reading), or MSB to LSB (Right to Left Reading)?

New Replies:

By Vhic Cruz on 3 September, 2009 - 1:31 am -

You don't need to type it back. You just need to use the special bit that flags the serial card to...

View entire thread (7 replies) or reply...

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