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- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
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modbus communication distance maximum
New Replies:
By Darrin Hansen on 16 November, 2009 - 9:35 am -
Modbus itself specifies no distances, as it doesn't even specify any particular physical layer. ...
I have a problem when I want to read the modbus of SHARK 100, because I can't read 32-bit IEEE floating point format in VIJEO DESIGNER 5.0.
New Replies:
There is an option for each device communications driver to change the double word order. If the FP...
I need to program s7-200 using USB PPI cable and wonderware incontrol
How to check scan time of DCS & PLC
Looking for any documents or tutorial about the AIS-spol PMU
communicate with a gsm modem connected to RS232 using matlab
New Replies:
By milli on 16 November, 2009 - 12:26 am -
Let me explain the problem more clearly...
i am actually trying to get data from a oscilloscope...
Does anyone here has an experience using simplex device for Fiber Optics?
New Replies:
Thanks Paul! Will it be a good idea to use simplex operation for Process Control Network? Will the...
CANOpen technologies
New Replies:
By Joe on 15 November, 2009 - 4:48 pm -
Have a look at http://www.canopen.nu.
...
>HBC-radiomatic has a wide range of radio remote controls with CANOpen interface.
...
How to determine update rate of GES driver to talk to RX3i.
What type of cable can be used for Gas Detectors in Zone 0.
New Replies:
By nil on 15 November, 2009 - 1:33 am -
i understood what ever u said. MAY i know the exact difference between Fire resistance Low smoke...
problem trying to connect a Advantys OTB 1S0DM9LP to Vijeo Citect through MODBUS RTU
New Replies:
By MPA from Slovakia on 13 November, 2009 - 5:40 pm -
Hi,
OTB works with two data areas: static ones and user data table
%MW2000:X0 up to X11 - is...
SLC5/03
using a Liebert HPM need Modbus and Lonworks info
timout detection by slave
New Replies:
By M Griffin on 12 November, 2009 - 5:15 pm -
That would be a watchdog function. There is nothing in the Modbus specification about that because...
Problem with Beckhoff BC9000 + KL6021
New Replies:
Thank you for the link...
By Simon Hedges on 11 November, 2009 - 4:54 am -
You could try posting this question on the TwinCAT Developers forum on LinkedIn...
time synchronization in DCS system
New Replies:
By M.Bhaskar on 12 November, 2009 - 7:36 am -
Hi,
please connect GPS to DCS directly through PPS or Ethernet in turn DCS will sync all other...
Hello all,
Thanks for all have taken care and explained for me.
And now we have another related...
S7-400 communicating with RKI INSTRUMENTS in Modbus mode looses communication
from the Fustrated department...
Modbus between PLCDirect DL06 and Emerson Control Techniques Servo DrivesNeed help with hardware interface PLC Direct DL06 to Emerson Control Techniques EPP drive via Modbus DH485
information about devices Mayr with modbus communications
from the Forum department...
Communication between Tricon PLC and Siemens S5 PLC via Modbus TCP/IP protocolCommunication between Tricon PLC and Siemens S5 PLC via Modbus TCP/IP protocol
New Replies:
By M Griffin on 11 November, 2009 - 4:04 pm -
I suspect that the problem is most likely in the Siemens computer ordering system rather than in...
> Exactly which modules did your Siemens rep say that you needed? <
Hi Darrin,
Im...
Hi,
Thanks for the reply. Im currently using Simatic S5 133U and want to communicate with Tricon...
hello
i do not think that You need a special communication, no triconex. if You got the siemens...
By Darrin Hansen on 10 November, 2009 - 8:52 am -
> I was told i needed a siemens communication module, sub-interface module and a specific modbus...
By Wassim Daoud on 9 November, 2009 - 11:48 am -
this is a common challenge in automation world usually solved by using OPC. have you tried that...
Siemens Teleperm AS230 information
Modbus TCPIP master to many slaves
New Replies:
>> thanks for your comments. You clarified what I was thinking. I will implement 1x socked...
Problem transferring Binary data over the GPRS Network while communicating to a modbus rtu
New Replies:
Telnet is designed for 7-bit ASCII.
It doesn't allow raw 8-bit binary data - various bytes (such...
By RKay on 9 November, 2009 - 12:57 pm -
Hello again,
> Modbus RTU can be sensitive to timing "gaps" in the message. <
...
By M Griffin on 8 November, 2009 - 12:56 pm -
Modbus RTU can be sensitive to timing "gaps" in the message. It could be the GSM modem is...
data mapping between SCADA and OSI-PI System
Can only read 6 registers from Controlotron 1010 flow meter via Modbus
New Replies:
By Angel on 10 November, 2009 - 4:38 am -
First of all, thank you for your answers.
Yes, the EPROM version is 5.1.
The problem here,...
I'd like to pull data from the Telemecanique Zelio Logic Relay.
New Replies:
I really would like to thanks all of you for dedicating time to answer my post. I only want to...
Reading Modbus registers using SNMP Protocol
New Replies:
By Wassim Daoud on 9 November, 2009 - 11:43 am -
Have you considered using OPC for this?
let me know
Wassim Daoud
Global solutions architect
...
By Gustavo A. Valero P. on 8 November, 2009 - 9:13 pm -
Hi,
What you need is a device called "gateway" which translates your Modbus data to...
By Ammar on 7 November, 2009 - 3:33 pm -
Salam GEN,
you can read modbus device register by making a low level program using Visual Basic...
Does TwinCAT have Function Blocks for TCP/IP?
New Replies:
By 3PV on 8 November, 2009 - 11:42 am -
yes. Direct access to TCP/IP Stack is available for TwinCAT. It's called the "TwinCAT...
I have some problems on the TCI.
it stops when the operating system of the HMI start.
it stops when the operating system of the HMI start.
New Replies:
Dear Mr. CSA
can you send me your e-mail so we can talk without any delays
and I will do...
Ahmed Ali,
I really don't understand the problem. I saw your 'photo album' and I've re-read your...
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