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Control.com topic...
Networking
Topic: Computers in manufacturing; also hardware discussion.
from the Linux RS485 department...
RS485 2-wire auto - Linux support
Originally posted by Leo on 19 December, 2013 - 3:53 am
RS485 PC hardware with 2-wire auto mode AND full Linux support
New Replies:
Hi Leo, Have you considered using a USB port to send the signal to your computer? There's a...
Topic: Communications systems and equipment.
from the ELECTRICAL PROJECTS department...
Replace RS-485 with Siemens Profibus Cable
Originally posted by JIMMY SALDIVIAS on 14 August, 2014 - 12:24 pm
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.
New Replies:
Hello, apparently this guys are Siemens Distributors for South America: http://bit.ly/1nJZxLH ...
Topic: Local and wide area networking in factory automation.
from the Forum department...
MODBUS to Lan Convertor
Originally posted by danaqu on 26 August, 2014 - 2:53 pm
Looking for a MODBUS to Lan convertor.
New Replies:
We have a series of products called our TDS series. Using 2 of these, you can form a serial data...
Yes, for 150 meters you could even use spare cat5 pairs with rs485. Regards cww...
It might work. I didn't see any software for configuring it. That type of serial server is...
You may or may not need another converter at the PLC. I would get a pair of RS232 to RS485...
Topic: Local and wide area networking in factory automation.
from the Forum department...
TCP/IP over Ethernet
Originally posted by Tarun on 25 August, 2014 - 1:23 pm
Is TCP/IP on ethernet better?
New Replies:
What does ethernet port with web server mean? If there is any literature related to that please...
I'd just use a $35 raspberry pi with a modbus master running on it You would need to write a web...
Here is one device that is getting attention in the hobby market: ...
Many PLC's, HMI's, drives, and other automation devices have Ethernet built-in or as an add-on...
If you are doing that I would get an Ethernet solution that can communicate to your microcontroller...
Basically my application is to host a webserver on a microcontroller to host the data of VFD to a...
Topic: Application Questions and Problems
from the Automation List department...
Control Valve Cycle Measurement
Originally posted by Gerald Beaudoin on 20 August, 2014 - 8:04 am
How to measure the control valve cycles?
New Replies:
By Gerald Beaudoin on 27 August, 2014 - 1:43 pm -
Sure would appreciate any points of view on this one..... Cheers Gerald Beaudoin...
Posted by ioudas on 19 August, 2014 - 1:16 pm
Trying to connect a bm85 to a 984 265. Via MODBUS+
Originally posted by ASCF on 4 March, 2014 - 4:08 am
I try to connect a Power Circuit breaker from Schneider to a Siemens PLC using Modbus RTU protocol.
New Replies:
Hi! Do you have some solution on your problem. I see we have the same HW and the same problem,...
Topic: Communications systems and equipment.
from the modbus community department...
RS-485 cable recommended reference
Originally posted by bammaroc on 13 August, 2014 - 6:33 am
RS-485: Reference recommended cable for Modbus communication between DCS and MVI94-MCM systems or PLC
New Replies:
I have to apologize, Belden doesn't make a bonded pair RS-485 cable, the cat cables would probably...
Posted by Robert Perez on 11 August, 2014 - 8:33 am
Connecting an ABB DI801 profibus to module-bus slave gateway with a SST-PFB-CLX master
Posted by Yousif on 10 August, 2014 - 8:29 am
What is the difference between OPC-UA and DNP3 protocol specially in low level layers?
Topic: Local and wide area networking in factory automation.
from the The Banging Head Against Wall Department department...
RS485 Issues - Modbus Temperature Controller to Ethernet
Originally posted by Plutonius on 1 August, 2014 - 9:08 pm
I am currently have a bit of an issue connecting to a Love 2600 temperature controller via RS485 full duplex with a Grid Connect NET485 Modbus RTU to TCP ethernet bridge.
New Replies:
Are both Love and the RTU side of the bridge 4 wire, full duplex? If one side is 2 wire half duplex...
By Lynn August Linse on 4 August, 2014 - 10:17 am -
Do make sure the slave address is correct. For example, if the Modbus/TCP client/master is putting...
Topic: PLCs and related questions.
from the Please Help department...
Send And Recieve data between To S7-1200 Plc's
Posted by Donovan on 1 August, 2014 - 3:15 am
Need Help on how to transfer data between two S7-1200 Plc's
Topic: Communications systems and equipment.
from the software department...
Read/Write serial port using php
Originally posted by vasudevan on 31 July, 2014 - 6:22 am
Read/Write from windows serial port using php
New Replies:
That's perfectly understandable if it's the same port. The writing program locks it (exclusive...
Topic: Engineering and workplace issues.
from the electrical, domotics department...
modbus-scada
Originally posted by Remi Van Damme on 2 July, 2014 - 1:15 am
is it possible in a modbus network to have a SCADA system which polls for data from the slaves and another SCADA system which also collects data from the same slaves?
New Replies:
We have 2 solutions for your application. In order to avoid having 2 masters in your PC, you will...
If you use a Modbus TCP gateway in front of the Modbus RTU line it is possible. If you can only...
You can't do it on the same subnet, as a Modbus subnet can have only one master. But the ICC...
Topic: Communications systems and equipment.
from the Forum department...
RS-485 Communications
Originally posted by Bill Dolan on 24 June, 2014 - 1:47 pm
RS-485 Communications with Standing Waves
New Replies:
I think I have bulletproofed the install now based on many of your recommendations. Thank you...
Posted by Raymond Laib on 24 July, 2014 - 9:55 pm
PF525 VFD drive faults via Stratix 8000 to be displayed on a HMI.
Topic: Software, including programming, OS issues, etc.
from the Software smithery department...
Ethernet/IP and Python
Originally posted by Mark Q Norman on 22 November, 2013 - 9:31 am
Need some help on using Python to test Ethernet/IP implementation.
New Replies:
Hello, At: http://www.hmisys.com/downloads/msExcel.zip is an Excel file that shows a...
By Lynn August Linse on 24 July, 2014 - 2:03 pm -
Sure, send an email direct to lynnl at digi.com. I've actually been asked quite a bit lately. I am...
Lynn, I'm working on a simulation software based on python, and I need to be able to read and...
Topic: Sensor technologies.
from the Instrumentation department...
analog 4-20mA output transmision
Originally posted by Kiyani on 10 May, 2012 - 6:02 pm
Analyzers analog output signal 4-20mA transmission
New Replies:
Is it safe to run analog and digital instrument signals in the same mulicore cable? multicore is...
Topic: Local and wide area networking in factory automation.
from the Forum department...
Communication Error with MODBUS DCS RTU
Posted by michael on 22 July, 2014 - 3:04 am
MODBUS over ethernet connection between yokogawa DCS and abb rtu anr96 has a communication error after several minutes.

Topic: PLCs and related questions.
from the serious department...
Siemens PLCs
Posted by Reeny on 11 July, 2014 - 12:26 pm
steady red EF BF LEDs after trying to connect S7-400 cpu414 to pc (5611 pci card), the remedy?
Topic: Software, including programming, OS issues, etc.
from the Electrical & Instrumentation department...
Unable to load DTM of HART Field Transmitter
Originally posted by Hoa on 24 March, 2014 - 11:02 pm
The Preventive Maintenance Server can not access Rosemount HART protocol transmitters
New Replies:
Rosemount download site for DTMs for Rosemount instruments. http://tinyurl.com/qe6cfy8...
Topic: PLCs and related questions.
from the serious department...
Siemens PLCs s7-400 backup
Posted by Reeny on 6 July, 2014 - 7:36 am
Creating a backup for an s7-400
Topic: Communications systems and equipment.
from the Hope Can Help department...
New 32/64 bit S7 communication library
Originally posted by Dave Nardella on 2 September, 2013 - 5:58 am
100% Ethernet - Open Source -
New Replies:
By Vanderley Maia on 5 July, 2014 - 7:56 pm -
Very nice work! I try to use this library and your samples (rich-demos) but something doesn't...
Topic: Local and wide area networking in factory automation.
from the Forum department...
Connecting a Emmerson AMS
Posted by shan marshal on 4 July, 2014 - 3:31 am
Connecting a Emmerson AMS for Profibus
Topic: Local and wide area networking in factory automation.
from the Control department...
Profibus to Modbus
Originally posted by Wade on 9 February, 2012 - 11:50 pm
Profibus to Modbus Conversion for Simatic S5
New Replies:
Simply putting a GSD file in the ES will not change anything. The hardware used in TXP is not...
Topic: Local and wide area networking in factory automation.
from the Engineering department...
RS485 multidrop network drops after few days
Originally posted by P Paul on 3 July, 2014 - 11:58 am
Modbus connections drops after few days and it resumes by changing modbus parameters in slave device.
New Replies:
By Lynn August Linse on 3 July, 2014 - 1:21 pm -
Based on 25 years experience with RS-485, sounds to me like you have a floating ground between the...
Topic: Communications systems and equipment.
from the Automation List department...
Working with MSCom and barcode scanner????
Originally posted by hung on 18 June, 2004 - 9:14 am
Working with MSCom and barcode scanner????
New Replies:
i want to work MSCom with this http://www.keepdynamic.com/dotnet-barcode-reader/ barcode scanner,...
Topic: Communications systems and equipment.
from the for PC DNP 3.0 serial simulations department...
DNP 3.0 serial simulator?
Originally posted by jose luis on 13 July, 2001 - 7:22 pm
Do you know if there is any simulator software for the DNP 3.0 protocol over a serial RS232 connection?

New Replies:
>Hi JOSE, We do have protocol analyser and simulator "RPA" which can simulate...
Topic: Software, including programming, OS issues, etc.
from the Free and open source department...
Free BACnet explorer and webserver
Posted by Frozenlock on 1 July, 2014 - 3:01 pm
I developed an open source BACnet software... I'm spreading the love ;-)
Originally posted by deep123 on 11 June, 2014 - 3:37 am
i want to connect one energy meter to two separate masters.
New Replies:
If you are able to open up a Modbus TCP connection from both of you Masters, you can use either...
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