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Control.com topic...
Communications
Posted by Oka on 12 February, 2014 - 7:37 am
Bently Nevada communication with /92 to Simatic PCS7 via Anybus 9001: Modbus TCP/IP to Profibus. Missing Watchdog function?
Topic: PLCs and related questions.
from the Multiple IP addresses? department...
Prosoft PLX31 Gateway AB EIP to MBTCP
Posted by Tim from Kansas on 11 February, 2014 - 8:26 pm
Multiple IP addresses on Prosoft Gateway PLx31-EIP-MBTCP, can this be done?
Topic: Communications systems and equipment.
from the Forum department...
Modbus over powerline
Originally posted by Peter E on 10 February, 2014 - 3:14 pm
Does there exist a device that makes it possible to transmit the MODBUS over a power line?
New Replies:
I second the recommendation for some meaningful testing upfront and also the recommendation about...
By Lynn August Linse on 11 February, 2014 - 10:07 am -
There are products out there - do a search for 'RS485 powerline'. Here is one example which even...
Topic: PLCs and related questions.
from the Who let the new guy in here? department...
Converting Satcon15 to micrologix plc
Posted by J on 10 February, 2014 - 1:08 pm
I need help changing SatCon15 to a PLC micrologix.
Topic: Communications systems and equipment.
from the Forum department...
Modbus CRC/Data Errors
Originally posted by FInlay Killoh on 10 February, 2014 - 4:32 am
Issues with incorrect data received at a slave with crc errors.
New Replies:
By Lynn August Linse on 10 February, 2014 - 10:34 am -
Any time you see stray 0xFF bytes, tends to be an RS-485 cable biasing issue. What happens is...
Topic: Communications systems and equipment.
from the Forum department...
Modbus RTU FC05 gives Error Code 84
Posted by Ralph on 10 February, 2014 - 3:53 am
Redundant S7 400H w. redundant Modbus_RTU connection to Honeywell-Control-System ==> no problem for 3 years. After adding (2) CP341 in redundant de-central periphery ==> sometimes error code 84 after sending FC05.
Topic: Communications systems and equipment.
from the Sending control words to the drive department...
Altivar 12 control via Modbus
Originally posted by TeaMan on 8 February, 2014 - 10:49 pm
Unable to send control or speed signals to my Altivar 12 drives from Mach 3 software on a PC.
New Replies:
All altivar drives must receive a run command in a certain way. On MODBUS tcp/ip you must write 3...
Topic: Communications systems and equipment.
from the design department...
MODBUS TCP with different slave ID
Originally posted by asd on 5 February, 2014 - 1:19 pm
client server communication
New Replies:
> below is the code, which is working fine for one node. if I polled with other node > ID...
By Lynn August Linse on 7 February, 2014 - 10:10 am -
> below is the code, which is working fine for one node. if I polled with > other node ID...
> You should be able to continue using the SAME TCP socket with any number of > Unit Id (I...
By Lynn August Linse on 6 February, 2014 - 10:03 am -
You should be able to continue using the SAME TCP socket with any number of Unit Id (I assume the...
Topic: Software, including programming, OS issues, etc.
from the Electrical Engineering department...
Communicate ER300P energy meter with PLC
Posted by Ummachan K.Joson on 7 February, 2014 - 3:43 am
How do I enter programming mode and communicate ER300P meter with PLC SIEMENS 200?
Originally posted by Qadir on 3 February, 2014 - 1:44 pm
We need check list item to run through for connecting MDS 4310 Modbus Radio to SCADAPACK334 RTU
New Replies:
The MDS4310 can certainly communicate Modbus protocol. However, that frequency band is subject to...
Topic: Local and wide area networking in factory automation.
from the automation department...
modbus TCP protocol
Originally posted by raghavendra on 3 April, 2013 - 8:29 am
Is Modbus a synchronous or asynchronous protocol?
New Replies:
I see this is an old thread but I thought I would chime in... The answers to the question...
Topic: Communications systems and equipment.
from the Forum department...
ModbusTCP over VPN over a Network
Originally posted by Vikrant on 29 January, 2014 - 9:00 am
Looking for information on how to communicate to a ModbusTCP slave device using a ModbusTCP master (SCADA) on different networks
New Replies:
By Lynn August Linse on 29 January, 2014 - 6:19 pm -
Actually, there is another method if you have a cellular or broadband NAT router which supports...
By Lynn August Linse on 29 January, 2014 - 5:08 pm -
VPN can be horribly complex, however to answer last question, one reason to use a VPN is that any...
Topic: Communications systems and equipment.
from the Forum department...
MODBUS pemex
Posted by DAVID MCSHAN on 29 January, 2014 - 4:45 pm
NEED TO TALK TO DCS VIA PROTOCOL CALLED MODBUS PEMEX.
Topic: Communications systems and equipment.
from the Forum department...
Honeywell c200 and modbus tcp
Posted by Irina on 29 January, 2014 - 3:52 am
I can't write data to modbus register
Topic: Communications systems and equipment.
from the Forum department...
AB Micro850 Modbus TCP programming
Posted by Ronny R. on 25 January, 2014 - 10:41 am
Trying to Connect a Parker SSD 6053 ENET module to a ALLEN BRADLEY Micro850 over Modbus TCP
Topic: PLCs and related questions.
from the Android department...
Writing String Over PLC from Android
Posted by Nivas on 24 January, 2014 - 1:29 am
How to Write String on TCP plc from Android Device?
Originally posted by JITENDRA KUMAR DAS on 14 January, 2014 - 1:52 pm
MODBUS communication protocol
New Replies:
Thanks for your posting on the Control.com forum -- your participation helps make this forum a...
Hello, 1. There is no limit. An IP address is the full address (A port number is also used but...
By JITENDRA KUMAR DAS on 16 January, 2014 - 12:23 pm -
Thank you for replying my questions but I am sorry to say that I am still not satisfied with above...
By Lynn August Linse on 15 January, 2014 - 9:59 am -
Despite the spec saying don't use 248 to 255, any host SHOULD support them, as some slave might...
> 1. What is the maximum number of SLAVE devices can communicate in MODBUS TCP/IP protocol with...
Originally posted by PT on 27 December, 2013 - 1:08 am
Do Modicon PLC M340 support more then 1 client over Modbus TCP/IP
New Replies:
Thanks for sharing useful information....
By Lynn August Linse on 27 December, 2013 - 10:32 am -
There are two answers: 1) most PLC will support many Modbus/TCP clients to access NORMAL...
Topic: PLCs and related questions.
from the Forum department...
matlab modbus
Originally posted by Ferit Buke on 8 January, 2014 - 10:33 am
I am trying to communicate between Matlab and PLC by MODBUS UDP. I can get message from PLC but I can not send a message to the PLC
New Replies:
I would verify the function code 23 is supported. Most devices do not support this function code,...
The PLC is master. matlab is slave. Thus matlab must only answer when PLC has made a request. ...
Topic: PLCs and related questions.
from the Forum department...
MODBUS ASCII
Posted by modbus on 8 January, 2014 - 10:22 pm
MODBUS ASCII USING ICP-DAS 7552 CONVERTER ON SIEMENS S7-300
Posted by Mark on 7 January, 2014 - 11:34 am
Confirm native communications capability between RXi controllers
Topic: Communications systems and equipment.
from the Forum department...
ModbusTCP Test Software
Originally posted by GBrown on 5 August, 2013 - 3:32 pm
Looking for ModbusTCP Master Test simulation software that will work on Windows 7 and Windows 2008 Server.
New Replies:
I wrote a program that can do that: http://sourceforge.net/projects/shortbusmodbusscanner/ It...
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 used to provide this type of training back in the late 90s in the Alberta Petroleum Industry. ...
Posted by Abdel-Qader on 17 December, 2013 - 6:49 am
SEPAM 40 series addresses
Topic: Communications systems and equipment.
from the Forum department...
Modbus to DNP Conversion
Originally posted by jeff g on 11 December, 2013 - 12:07 pm
Looking for Converter
New Replies:
Hi Jeff Kalkitech offers Modbus TCP to DNP3 serial protocol converters. We suggest SYNC 2000...
Hi, www.fieldserver.com has a gateway that will connect DNP 3.0 to Modbus RTU, give them a call...
Topic: Communications systems and equipment.
from the Telecommunication and Instrumentation department...
Communication Failure NOTIFER FACP and MODBUS Gateway Card
Posted by Dinesh Chauhan on 12 December, 2013 - 7:52 am
Communication Failure NOTIFER FACP and MODBUS Gateway Card. (NCM Communication Failure)
Topic: Engineering and workplace issues.
from the Forum department...
Modbus communication with Danfoss FC 302.
Originally posted by Danfoss on 7 November, 2013 - 1:00 am
Modscan communication using Modscan32.
New Replies:
As it is a timeout signal the problem is most probabily with the connection only. I have tried...
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