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Control.com topic...
Software in Automation
Topic: Communications systems and equipment.
from the Communications department...
OPC server communicate with OPC server
Originally posted by Franco Kew on 16 April, 2014 - 5:19 am
How do one OPC server share data with another OPC server?
New Replies:
In order to facilitate such communication you typically use an OPC client that connects to both...
Topic: Software, including programming, OS issues, etc.
from the Computer department...
Serial Communication VB Code
Posted by Jinali on 16 April, 2014 - 4:11 am
Continuous reading of serial input
Topic: Communications systems and equipment.
from the Automation and EMS department...
Modbus Data transmission time
Originally posted by Bhadresh Sarvaiya on 12 April, 2014 - 7:58 am
How to calculate time to receive data from slave to master in daisy chain connection of slaves, if my slaves are 20 and single master.
New Replies:
By Patrick Lansdorf on 16 April, 2014 - 1:55 am -
Hi, I have made a simple Excel sheet, where one can calculate the line time. You will need to...
Slick idea on the prefetch! ...
By Lynn August Linse on 15 April, 2014 - 9:31 am -
>> What's a rule-of-thumb value for >> RTU-TCP latency in a Digi Modbus bridge...
By Bhadresh Sarvaiya on 15 April, 2014 - 1:29 am -
> Mr. Linse, > What's a rule-of-thumb value for RTU-TCP latency in a Digi Modbus bridge...
Mr. Linse, What's a rule-of-thumb value for RTU-TCP latency in a Digi Modbus bridge product? ...
By Lynn August Linse on 14 April, 2014 - 10:36 am -
Just be careful to accommodate the delay-back off during failure. With a single device, it might...
It depends on how it's written. In the system I just set up, I use a state machine to do the...
By Bhadresh Sarvaiya on 13 April, 2014 - 5:14 am -
Thank you for your kind reply.. but i didn't get answer as i want.. i didn't understand your...
You know - the word size, 11 bits - the number of words in the master message - silent...
Topic: Software, including programming, OS issues, etc.
from the INSTRUMENTATION department...
UREA FLOW METER
Originally posted by Arun Kumar on 14 April, 2014 - 4:20 pm
What type of flowmeter can be installed in a Urea duct as a source of FD and ID fan in the duct?
New Replies:
What are you measuring? Just air flow? We use a DP transmitter for our prill tower air ducts....
Topic: Local and wide area networking in factory automation.
from the I'm in trouble department...
MODBUS ABB ACS550 Connection trouble
Originally posted by Christopher James Churchill on 13 April, 2014 - 7:59 am
MODBUS connection trouble... How to create a virtual COMM port
New Replies:
Looks like USB conversion would be your best alternative. Here's a device from a company that...
The port behind the keypad, although RJ45, is serial, not Ethernet, so even if you could find a...
Topic: Software, including programming, OS issues, etc.
from the Tag Prefix WinCC V7.2 department...
Tag Prefix WinCC V7.2
Posted by / on 14 April, 2014 - 1:14 am
Communicating with Tag Prefix WinCC V7.2 using MODBUS TCP/IP protocol.
Topic: Software, including programming, OS issues, etc.
from the Annoying Exceptions department...
Negative Acknowledge and Bad Karma
Originally posted by Julie in Austin on 18 February, 2012 - 2:05 pm
How do you feel about security exceptions not being, you know, informative?
New Replies:
> What product are you working on, and are there any other security enhancements you are making?...
> Wait....when Digi hires you, you'll STOP writing code?? Digi -- don't hire Julie! No, Digi...
Topic: Communications systems and equipment.
from the Automation department...
DCS Yokogawa Communication Issue
Posted by Zarar on 13 April, 2014 - 2:21 pm
Yokogawa DCS communication with Modbus slave device using ethernet redundant connection with ALE111.
Topic: Power generation equipment control.
from the control systems department...
Meaning of the "smiley symbol" in MARK V csp file
Originally posted by mhkhan on 11 April, 2014 - 10:58 am
In the csp file of MARK V control system, can any body tell me what the "smiley symbol" means in the BBL logics?
New Replies:
mhkhan, It's presumed you're referring SPECIFICALLY to the CSP.PRN file. It means EXACTLY...
Topic: Power generation equipment control.
from the Controls department...
Mark-VI Control System T-core Issue
Originally posted by srh on 10 April, 2014 - 6:49 am
Issue being faced on T-core of Mark-VI
New Replies:
Yes, technically T-controller is down. As regards time, PC is running on localized clock and...
Online replacement of VCMI can be done as the system is already running on R and S processors as I...
Thanks for the response BN. Yes, VCMI appeared to be the suspected culprit but i was not sure. ...
Topic: Software, including programming, OS issues, etc.
from the TPS SI Commincated by modbus department...
Modbus problem with honeywell TPS
Posted by govoni on 11 April, 2014 - 2:35 am
Decompressing Modbus word and still receiving appropriate feedback information
Topic: PLCs and related questions.
from the Instruments Department department...
Modbus Max. Length
Originally posted by Franco Kew on 8 April, 2014 - 10:34 pm
Measure the total Modbus Length
New Replies:
Dear CWW, Maybe I use the wrong wording in my post, but I am not using the star topology. I try...
Hadn't thought of segmenting the network with repeaters to fix the topology - slick! Franco,...
By Lynn August Linse on 9 April, 2014 - 9:46 am -
This is an RS-485 issue, not Modbus question. Max length is more an issue of the cable quality...
You're not supposed to run RS485 in a star topology. Not sure if short branches are officially...
That doesn't sound like a workable configuration. 485 doesn't like star layouts. You can use...
Originally posted by Fuzzy Logic on 6 April, 2014 - 7:17 am
Are sites moving past communication standards originated by serial communications?
New Replies:
You all have been extremely helpful, thank you!...
Thanks, Lynn! I'll be sure to take a look at those. Understand about the mesh, but so far the...
By Lynn August Linse on 9 April, 2014 - 9:58 am -
> Lynn, if I read your post correctly, you're saying there are standalone RS485 radios, not...
> This may be crazy talk, but are there sites that implement wireless Ethernet/Modbus? I'm...
By Lynn August Linse on 8 April, 2014 - 9:55 am -
>This may be crazy talk, but are there >sites that implement wireless Ethernet/Modbus? ...
This may be crazy talk, but are there sites that implement wireless Ethernet/Modbus? I understand...
By Lynn August Linse on 7 April, 2014 - 10:23 am -
Actually, if I view this as the more narrow question of serial-vs-Ethernet, I could paraphrase a...
By Lynn August Linse on 7 April, 2014 - 9:37 am -
Adding to what Curt mentioned, I think the bulk of small companies find Modbus support FAR MORE...
Topic: Continuous process industries, DCS questions.
from the HC900-C70R department...
Split Range Control on two valves - HC900-C70R
Originally posted by Frederik on 8 April, 2014 - 7:45 am
Split Range Control on two valves - HC900-C70R
New Replies:
The pressure transmitter is the input to an analog input function block. Its analog value is the...
Topic: Communications systems and equipment.
from the Forum department...
WinConX driver (MBX driver 4.2)
Originally posted by Julio Mtz on 8 April, 2014 - 9:46 am
I need the WinConX driver (MBX driver 4.2) to install an old PCI-85 card
New Replies:
Contact your local Schneider Modicon representative. They might be able to give you a complimentary...
Topic: PLCs and related questions.
from the Over the Cliff department...
Siemens S7 programming
Originally posted by Bapi on 1 April, 2006 - 5:18 pm
Siemens S7 programming
New Replies:
I take issue with this assessment. Take your example of C vs Visual Basic. There's a dramatic...
Posted by Automation1971 on 5 April, 2014 - 4:01 am
Is there a simple Device to send multiple digital Inputs to a Modbus Slave Register?
Topic: Software, including programming, OS issues, etc.
from the Forum department...
Exporting Files from Emerson RS-3 DCS
Posted by David Garcia on 4 April, 2014 - 1:13 pm
Exporting the alarm configuration file or data from Emerson RS-3 DCS
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