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Control.com topic...
Software in Automation
Topic: Software, including programming, OS issues, etc.
from the opc communication department...
OPC tags stop updating...start once the tags are added again
Posted by lalas on 24 April, 2014 - 3:54 pm
Utilizing an opc client ..the values stopped updating after a while (20 days) .Once i added the tags again into the same group they start updating .Everything is fully licensed so it is not a licensing issue.
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? Thank you for your response. Sir, as it is a large...
What are you measuring? Just air flow? We use a DP transmitter for our prill tower air ducts....
Originally posted by rajesh patil on 23 April, 2014 - 2:28 pm
why the modbus mapping register is visible at register address +/- 1 address.
New Replies:
> Guys who live in cubes write the code. Hence, it depends on whether the guy who > wrote...
Hi, the numbering is introduced in the official Modbus Application Protocol Specification (page...
Guys who live in cubes write the code. Hence, it depends on whether the guy who wrote the code...
Topic: PLCs and related questions.
from the Automation and EMS department...
Unity Pro communications
Originally posted by Bhadresh Sarvaiya on 22 April, 2014 - 6:49 am
Need help for communication of NOE with M340.
New Replies:
This is compatibility error due to upgrade of firmware in NOE. Likely Unity V5 does not support the...
Originally posted by rizki on 23 April, 2014 - 12:55 am
help me to connect Vijeo citect and unity pro xl
New Replies:
Hi Rizki, it is difficult to find comprehensive tutorial on your native language. I found link...
Topic: PLCs and related questions.
from the Modbus department...
S7 PLC as a MODBUS slave
Originally posted by Fatima on 22 April, 2014 - 8:29 am
would like to make S7 PLC as a MODBUS slave and a PC Master MODBUS
New Replies:
Forgot to mention in my previous post. The reason I distinguished between tech and business aspects...
Have never done it using the Siemens Ethernet port, but I have done that on a 315-2DP using a...
Topic: Communications systems and equipment.
from the Forum department...
MODBUS Function code
Posted by Hemant on 22 April, 2014 - 3:16 am
MODBUS function code of address word
Topic: Communications systems and equipment.
from the Forum department...
Modbus via microcontroller
Originally posted by Ed on 20 April, 2014 - 2:40 am
Communicating with device via Modbus RTU through a microcontroller.
New Replies:
By Lynn August Linse on 21 April, 2014 - 1:56 pm -
The "try a PC" option is always a wise first-step ... make sure you can trust your tools...
I'd suggest you first try an easy way to use a PC: http://www.ctrlterm.com/custom.htm Once the...
If it were me, I'd connect a PC with a serial port running a generic Windows Modbus 'test' master,...
Topic: Software, including programming, OS issues, etc.
from the Forum department...
MODBUS COMPATIBILITY ISSUES WITH WINDOWS 7
Posted by SALIH SMA on 21 April, 2014 - 7:58 am
We are facing problem with Modicon MODBUS Serial IO Server 7.5 (7.5.0.7) with win7 as compatibility issues.
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:
Was reading this thread and one question comes to my mind. There was a mention of Lockout Relay...
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...
Topic: Software, including programming, OS issues, etc.
from the Forum department...
Upgrading Siemens PCS7 V 6.1
Posted by RAB on 18 April, 2014 - 6:41 pm
Can you plz suggest the best solution to upgrade Siemens PCS7 to latest version?
Topic: Software, including programming, OS issues, etc.
from the ANY department...
Software suggestions
Posted by Centrafused on 17 April, 2014 - 8:04 pm
New to automation and searching for a simple solution on some safety concerns.
Topic: Communications systems and equipment.
from the Automation department...
DCS Yokogawa Communication Issue
Originally posted by Zarar on 13 April, 2014 - 2:21 pm
Yokogawa DCS communication with Modbus slave device using ethernet redundant connection with ALE111.
New Replies:
By Elbert van der Bijl on 17 April, 2014 - 5:15 am -
this behavior is by design and it will not occur when the Modbus slave is correctly responding to...
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: 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: 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: 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
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