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Control.com topic...
Communications
Topic: Communications systems and equipment.
from the Solar department...
Modbus Training Courses
Originally posted by Kyle on 19 December, 2013 - 9:37 pm
Looking for Modbus training courses
New Replies:
I created a course on uDemy called Mastering Modbus RS485 Network Communication for persons wanting...
Topic: Communications systems and equipment.
from the Forum department...
RS485 to Analog Input Conversion
Originally posted by cherrypi on 20 October, 2014 - 3:38 am
Is it possible to convert (multiple) readings being transmitted through RS-485 communication to analog signals?
New Replies:
Thank you Walt. I do agree with you, however the powers-that-be still requested for the research to...
Thank you Curt! This is exactly the kind of stuff I was looking for....
A PLC with a RS485 port and a few analog outputs would do it fairly easily and more economically...
With all due respect, I would be extremely reluctant to use wireless sensors in an ESD application....
Topic: Communications systems and equipment.
from the Forum department...
SLC500 Communications with Unitronics PLC
Originally posted by Rodger on 17 October, 2014 - 1:38 am
Setting up communications between a Unitronics PLC and SLC 500 PLC
New Replies:
I think the simplest thing to implement here would be Modbus. The Unitronics can be a Modbus master...
If there exist an option for interface between SLC500 and the new PLC with an Ethernet, it would be...
Originally posted by mohanad on 26 October, 2014 - 1:48 am
I want to send a signal via MODBUS to Emerson DCS
New Replies:
CuriousOne, If I only had a nickel for every time I have heard that refrain I would be a very,...
It is a simple as changing a couple of text files and restarting interfaces....
It's not really clear what mohanad is asking. It could be that he wants to establish an entirely...
We recently converted from Mark5 to Mark6e. We had an existing link to Ovation already. Previous...
The Mark VIe is a control system that uses I/O, so I'm assuming that you don't need data...
Topic: Local and wide area networking in factory automation.
from the LITTLE GRASSHOPPERS department...
MODBUS Radio Network
Originally posted by JIMMY SALDIVIAS on 26 October, 2014 - 10:29 am
How many radio receivers do I need in a MODBUS EIA-485 network using VERIS H8830?
New Replies:
Thank you Koen for your help. Where can I get hands on a document who explains how these radios...
Routing is automatic. All H8830 devices create one RS485 network so all devices on the RS485...
I see. I understand what you are saying about the 32 devices per radio and also that I would need...
One H8830 can handle 32 modbus slaves. If you want to connect 82 modbus slaves you will need at...
Topic: Communications systems and equipment.
from the ModbusTCP department...
PROSOFT MVI56-MNET Slave Response Time
Originally posted by Cris on 17 September, 2014 - 2:27 pm
PROSOFT MVI56-MNET communication response time and performance
New Replies:
I just tested this with Modscan32 and the MNET unit was replying as fast as Modscan32 could request...
Topic: Communications systems and equipment.
from the Networka department...
Control Networks
Posted by Haseeb on 27 October, 2014 - 5:50 am
Feasibility of avionics network AFDX in industrial automation solutions where networks like EtherCat is used.
Topic: Software, including programming, OS issues, etc.
from the Polling department...
Improving Polling for Communication Protocol
Originally posted by SC on 24 October, 2014 - 3:00 am
Polling method efficiency.
New Replies:
Just a quick idea. You have cyclic data received in polling time. And you have asynchronic data...
Polling insinuates a serial protocol with a Server/Client relationship. Looks to me like you...
Originally posted by Ben Herston on 21 October, 2014 - 5:54 pm
I need assistance in programming a Modicon Bridge/Mux BM85S485. The product is obsolete, and Schneider no longer provides technical support.
New Replies:
Give me an email address and I can mail you the user manual that explains the whole module....Don't...
Topic: Communications systems and equipment.
from the Confused Engineers department...
Allen-Bradley Ethernet to Fanuc CNC
Originally posted by David on 20 October, 2014 - 11:26 am
Communicating to Fanuc CNC controller from Allen-Bradley Compact Logix???
New Replies:
Yes I'm sorry. The CNC and the PLC both are using Ethernet/IP. I have only ever used Ethernet/IP to...
By Patrick Lansdorf on 21 October, 2014 - 2:43 am -
I think that you need to inform about what options that are available on the Fanuc CNC. I guess...
Topic: Engineering and workplace issues.
from the OPC to CS3000 communication department...
Reading text information from OPC to yokogawa CS3000
Originally posted by ANWESHA on 3 July, 2014 - 4:08 am
Is it possible to read text/string from OPC to CS3000 in some way?
I would like to read a Batch number which is scanned and fed to OPC and display in the graphics of CS3000.
Is that possible?
New Replies:
Hi, Thanks for all your replies. The last reply by BC* nailed it. Yes there is a historian...
Topic: Software, including programming, OS issues, etc.
from the How far can I stretch the standard department...
How Strictly Should the MODBUS Addressing and Data Models Be Followed?
Originally posted by MikeAtCalidus on 16 October, 2014 - 5:50 am
How flexible can the Addressing and Data Models be with regard to the width and alignment of objects accessed through read/write register functions?
New Replies:
Hello, My point was: follow the specification. Regards, Mark http://www.peakhmi.com/...
By Lynn August Linse on 20 October, 2014 - 12:27 pm -
Mark, I can only shrug, reporting what I've seen. As I said, I find it annoying, and do as I...
Hello, What if the master uses two reads and the combination of two reads fetches the complete...
By Lynn August Linse on 20 October, 2014 - 9:30 am -
I have seen small products demand a read starts at 'beginning' (offset 0). I've also seen products...
Considering the answers above, would it be acceptable for the server to respond with an ILLEGAL...
Hello, >...is it more likely to make people reject the product as being utterly...
> Would a Modbus server with register greater than 16 bits be useable? No, It would be a...
Topic: Software, including programming, OS issues, etc.
from the Forum department...
Maximun nodes of Modbus
Originally posted by Kevin Fan on 14 October, 2014 - 10:18 pm
What are the maximum nodes and cycle time of Modbus TCP and Modbus RTU on RS485?
New Replies:
By Patrick Lansdorf on 16 October, 2014 - 3:03 am -
Hi Kevin, I guess that for Modbus TCP there is no real limit of nodes. If the subnet mask...
Topic: PLCs and related questions.
from the little guidance please... department...
PLC Data Access Using OPC
Originally posted by Rodney Cox on 14 October, 2014 - 3:44 am
I need help finding resources to help me develop OPC data access to record data to my database. I'm an information systems student new to PLCs and cannot find the necessary resources.
New Replies:
We run the OSS project http://pvbrowser.org it includes an OPC XML-DA client based on libcsoap,...
If you don't intend to join the OPC Foundation to obtain the spec, you are likely looking at...
Most manufacturers of OPC Servers provide full functioning demos of their products. You can get...
Hello, Writing a client or server without the specification will be ... a challenge. ...
Originally posted by connected on 14 September, 2014 - 2:31 pm
Problem with SCADA system that supervises electrical power flow for a residential building. Connected with Modbus RTU over RS485 daisy-chained 2-wire. The communication on the bus seems to be destroyed with Schneider PM750 connected.
New Replies:
Differences are common, if there is nothing to tie their references together. If one end or both is...
Thank you for posting your solution. It really helps who find this thread to see what the solution...
I finally found a solution to this problem. Based on the response here, I've measured the...
Topic: PLCs and related questions.
from the Forum department...
Contactless Card Reader and PLC
Originally posted by Amer on 26 September, 2014 - 3:30 am
How to connect contactless card reader to PLC?
New Replies:
Please describe, why are you trying to connect a card reader to a PLC....
Topic: Communications systems and equipment.
from the Forum department...
Importance of RF in Automation engineering
Originally posted by Rushi Shroff on 13 October, 2014 - 12:58 pm
Should I study RF SYSTEM DESIGN FOR WIRELESS COMMUNICATIONS in depth for Industrial Automation?
New Replies:
Yes, There is a growing demand of communication and wireless technology in the automation...
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