from the ControlNet vs Modbus department...ControlNet and Modbus
Why use Modbus when you can use ControlNet
By Lynn August Linse on 4 November, 2014 - 9:30 am -
I am sure you can - just buy a unit which was the more expensive baseband technology of ControlNet,...
from the HELP on a communication error...51478?? department...IDEC Communication Error 51478
Son is on a location and is receiving an IDEC communication error 51478. he is where any communication is EXTREMELY limited due to the remoteness.
from the DIY DCS department...Distributed Control Systems
For a school assignment I want to buy and configure a DCS.
By PLC Engineer on 2 November, 2014 - 8:46 pm -
Better. DCS isn't Just a micro controller. I used to be an Embedded systems design engineer before...
By PEEZHEAD on 1 November, 2014 - 1:54 pm -
Hello.... I've been doing this for many years. Since my eyes where at my knees. What I find...
from the Forum department...Wireless with Micro 1400
How to link a Micro 1400 through internet?
from the LITTLE GRASSHOPPERS department...MODBUS Radio Network
How many radio receivers do I need in a MODBUS EIA-485 network using VERIS H8830?
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...
from the INSTRUMENT department...Grounding Problem in Siemens DCS
In DCS panel the resistance measured between power earth and signal earth vary from 24 ohm to 160 ohm in different panels.
My apologies, I see now that I misread your post. You should not have that much resistance...
You need to be specific not only with the resistance magnitudes you describe but also how you are...
> resistance between power earth and signal earth is varying from 40 ohm to 120 ohm. It...
Resistance from cabinet instrument ground to ground connection in earthing pit 100-200 milliohms. ...
from the ModbusTCP department...PROSOFT MVI56-MNET Slave Response Time
PROSOFT MVI56-MNET communication response time and performance
By CH on 27 October, 2014 - 5:49 pm -
I just tested this with Modscan32 and the MNET unit was replying as fast as Modscan32 could request...
from the Networka department...Control Networks
Feasibility of avionics network AFDX® in industrial automation solutions where networks like EtherCat is used.
from the little guidance please... department...PLC Data Access Using OPC
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.
By pvbrowser on 16 October, 2014 - 2:53 am -
We run the OSS project http://pvbrowser.org it includes an OPC XML-DA client based on libcsoap,...
By Mark on 15 October, 2014 - 1:14 pm -
If you don't intend to join the OPC Foundation to obtain the spec, you are likely looking at...
By Fred Loveless on 14 October, 2014 - 10:43 am -
Most manufacturers of OPC Servers provide full functioning demos of their products. You can get...
By Mark on 14 October, 2014 - 8:53 am -
Hello, Writing a client or server without the specification will be ... a challenge. ...
from the Forum department...MSTR TCP/IP Control Word Definitions
clear definition on some of the control words used in setting up the MSTR function with TCP/IP
Hi I came across this post tryign to find answer to an issue using the same configuration u...
from the Forum department...HMI with Generic Serial Port
Looking for an HMI with a generic serial port that can be controlled via scripting.
By Mark on 14 October, 2014 - 8:49 am -
Hello, Thanks for the response. 232 or 485 will work. Regards, Mark...
By PLC Programmer on 14 October, 2014 - 6:33 am -
Are you considering ports RS232 / RS485 for your application?...
from the Hope Can Help department...New 32/64 bit S7 communication library
100% Ethernet - Open Source -
By pvbrowser on 10 October, 2014 - 4:45 am -
Nice e to have a new Open Source LGPL library for Siemens PLC communication. I downloaded your...
By gio on 9 October, 2014 - 1:33 pm -
>CPU : Address out of range. > >DO you know if there are something to >set in the...
from the Software smithery department...Ethernet/IP and Python
Need some help on using Python to test Ethernet/IP implementation.
>Firstly does anyone know of an existing >EIP/CIP python library I could use? Mark; ...
from the CONTROL department...ESD thru MODBUS??
Is ESD thru modbus is ok??
By Robin Clark on 8 October, 2014 - 4:50 am -
>I don't think so speed is the only >issue it can be another thing like :- >comm...
from the Forum department...Deltav Network
Link two different version of DeltaV
> I am also interested to communicated Deltav version 9.0 & 11.3 Together on same network. ...
from the Engineering design department...RS485 Connnection to DV-6 VE4006P2
Connecting DCS to VFDs on 485 Modbus RTU
Modbus is not plug-and-play even if Emerson's laughable marketing spiel, "Plug your Serial...
from the Forum department...Mark-VI Communication with ABB DCS Over OPC
OPC Communication between Mark-VI and ABB Freelance AC800F fails resulting in hanging of all ABB Operator Stations.
Ali, Mark VI systems are no longer provided by GE; Mark VIe systems are now the standard. This...
from the Modbus department...Non-Isolated and Isolated Modbus Slaves on Bus
Bus contains isolated and non-isolated slaves. Considerations when connecting everything together?
from the networking department...Information regarding tag in Control logix over Ethernet/IP
Are controller tag details for control logix is available on ethernet/IP? Using 1756-EN2T module in controller chassis for communication.
from the Communication department...Communication Between Control Logix and Centum VP Using Ethernet/IP
Communication not getting established between Yokogawa (ALE-111) and Control logix using Ethernet/IP.
from the seeking product recommendations department...Modbus TCP temperature monitor
I'm looking for a product recommendation
By SG on 17 September, 2014 - 6:39 am -
See there... http://pcsensor.com/index.php?_a=product&product_id=109 Moderator's...
I am looking for much the same thing, a simple temp and humidity for my server room. I just want...
from the Forum department...TCP/IP over Ethernet
Is TCP/IP on ethernet better?
> What does Ethernet port with web server mean? It means that the Ethernet port supports HTML...
What does ethernet port with web server mean? If there is any literature related to that please...
from the Instrument department...ALE111 module send failure
Yokogawa ALE111 module communication problem
I have a similar problem. We are using ALE111 Ethernet card with controller ADV10D to communicate...
from the Linux RS485 department...RS485 2-wire auto - Linux support
RS485 PC hardware with 2-wire auto mode AND full Linux support
By tanstaafl on 30 August, 2014 - 5:12 pm -
Leo: > To date I have got my code talking to my sensors (RS485 modbus RTU) on my Windows...
By digguru81 on 29 August, 2014 - 12:54 pm -
Hi Leo, Have you considered using a USB port to send the signal to your computer? There's a...
from the ELECTRICAL PROJECTS department...Replace RS-485 with Siemens Profibus Cable
I am building a Modbus RTU network and am considering replacing RS-485 cable with Siemens Profibus cable. Want to hear from those who have done this.
By PG on 29 August, 2014 - 10:41 am -
Hello, apparently this guys are Siemens Distributors for South America: http://bit.ly/1nJZxLH ...
from the Forum department...MODBUS to Lan Convertor
Looking for a MODBUS to Lan convertor.
By ICP- Robert on 28 August, 2014 - 7:35 pm -
We have a series of products called our TDS series. Using 2 of these, you can form a serial data...
"Of course power tools and alcohol don't mix. Everyone knows power
tools aren't soluble in alcohol ..."
-- Crazy Nigel