Posts from...
Today, Wednesday, April 23, 2014
Topic: Sensor technologies.
from the Real puzzler department...
Thermocouple readings problem
Originally posted by Michelle on 22 April, 2014 - 10:22 pm
Took temperature readings with J thermometer but only had K type wire!
New Replies:
what you have to be careful of is that Type-K thermocouple wire, and Type-K extension wire are two...
Another control.com thread http://control.com/thread/1336501913 involved back calculating when...
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...
Posted by rajesh patil on 23 April, 2014 - 2:28 pm
why the modbus mapping register is visible at register address +/- 1 address.
Originally posted by Rzr on 24 August, 2012 - 7:11 am
Is there need for accessories like modules or adapters to connect the Magelis XBTGT6330 HMI to Modbus Plus network or it can be connected directly to the Modbus Plus network without using extra hardware?
New Replies:
Do you know what driver was used for Vijeo Designer for the Magelis to work with the Anybus-gateway...
Topic: Power generation equipment control.
from the Forum department...
Mark Vie PPDA IO Pack Fault
Posted by kwaku on 23 April, 2014 - 10:22 am
PPDA I/O pack on PDM card faulty?
Topic: Communications systems and equipment.
from the IEC-60870-5-101 Protocol &DNP-3 are same department...
IEC-60870-5-101 Protocol & DNP-3
Originally posted by ajay on 1 April, 2006 - 10:12 am
Is DNP-3 protocol is the same as IEC-60870-5-101
New Replies:
Sir, Can you suggest me what are the basic differences b/w IEC104 and IEC101 protocol....
Originally posted by BrownPaper on 20 April, 2014 - 11:34 am
Difference between throttle pressure and 1st stage pressure
New Replies:
With valves wide open, the 1st stage pressure/throttle pressure ratio will be a relatively constant...
Interesting. Is 1st stage pressure and Throttle pressure used to calculate throttle valve...
The first stage pressure on GE steam turbines is measured just downstream of the first stage...
Your understanding is correct for GE steam turbines....
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: Engineering and workplace issues.
from the Automation List department...
difference between earthing and grounding
Originally posted by soujanya on 20 October, 2004 - 12:45 am
need to know the difference between earthing and grounding.
New Replies:
I think it is a term that means the same thing - a connection to earth. In any case, people make...
Yes there is quite difference between earthing and ground. in a simple way earthing protect the...
Topic: Engineering and workplace issues.
from the electrical engineering department...
% impedance of power transformer
Originally posted by ramesh on 5 August, 2008 - 1:12 am
Elaborate on % impedance of power transformer.
New Replies:
KS... do you mean the short-circuit level on the 6.6kV level increased from 40 to 63kA? ...
Hi Phil Can you kindly advise what is the effect of system fault level on transformer design. ...
Topic: PLCs and related questions.
from the Urgent department...
Time and Date in Honeywell control builder
Originally posted by Mostafa on 8 April, 2014 - 2:48 pm
How could use time and date in control module?
New Replies:
Hi Mostafa, I saw your pictures, please go to the CM tree at your left and under the root node...
> Could you upload a picture showing your control builder? ...
Topic: Local and wide area networking in factory automation.
from the Forum department...
Modbus Converters
Posted by dodgeybro on 23 April, 2014 - 6:33 am
Modbus Gateway v's Modbus Servers and Protocol converters.
Topic: Sensor technologies.
from the Instrumentation department...
Calculating LRV/ URV of a Bubbler Level System
Originally posted by Kazim on 22 April, 2014 - 12:56 am
How do you calculate the LRV and URV of a Bubbler type Level Transmitter?
New Replies:
first find the clearance of your dip tube. say if it is 200mm. total height of the tank =...
Your bubbler can not 'see' any head pressure lower than its elevation, so you can not measure any...
Topic: Engineering and workplace issues.
from the Electrical & Instrument department...
Bently Nevada axial vibration due to lightening strike
Posted by Kamran Shamim on 23 April, 2014 - 2:58 am
Technical query - Bently Nevada axial vibration due to lightening strike
Topic: PLCs and related questions.
from the ENG department...
Triconex system
Posted by HAIRI on 23 April, 2014 - 1:48 am
What happens when Triconex system CPU fails?
Topic: PLCs and related questions.
from the Forum department...
Yokogawa error message
Originally posted by Nacer on 8 August, 2011 - 10:09 am
Yokogawa error message
New Replies:
You've basically created a tag without it being registered in the taglist. This can be done if you...
Topic: Human-Machine Interface and SCADA.
from the Automation List department...
Android tablet for HMI?
Originally posted by Ken E on 3 June, 2011 - 11:18 am
Using an Android tablet as an all in one PLC.
New Replies:
By Peter Fredriksson on 22 April, 2014 - 4:32 pm -
Hello, I hope you all will not see my post as a advertisement. We are a small family company...
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: PLCs and related questions.
from the gad trubine control system department...
moog servo valve operation
Originally posted by VK on 1 November, 2012 - 10:30 am
How does a MOOG servo valve operate?
New Replies:
Jyshen, You are most welcome....
Dear CSA, Thanks for your superb informative response. Your passion and sincerity to share your...
Posted by GRJS on 22 April, 2014 - 8:56 am
Measuring winding resistance in a delta connected transformer.
Topic: Human-Machine Interface and SCADA.
from the PSEB department...
TDC 3000
Originally posted by singhbvirk on 21 September, 2009 - 5:55 am
How to print tag nos. and descriptions of historised points in TDC 3000
New Replies:
Hi - anyone who is looking for similar information may find these information books very useful -...
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
Originally posted by Detlev Neumann on 17 April, 2014 - 4:09 am
Could I say that with the following facts my device is MODUS-RTU compatible
New Replies:
Agreed. Other than noting that you should be as flexible as possible on serial parameters (and...
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...
Topic: Power generation equipment control.
from the Control department...
SynGas Conversion Project
Originally posted by Abhishek on 17 April, 2014 - 5:20 am
Pointers for Syngas Conversion project in India
New Replies:
Abhishek... Has the Plant's SLD been presented? Regards, Phil...
> what type of conversion process is involved? For example is it: Thanks Phil for your...
Topic: Motion control, servos, steppers, etc.
from the Automation department...
Hall/Magnetic Sensor
Originally posted by Biju CG on 17 April, 2014 - 4:10 am
Hall Sensor Replacement Failed !
New Replies:
Thanks Geir. I have measured 13.5 VDC on Vcc line of the sensor from controller and same voltage on...
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...
Topic: Sensor technologies.
from the instrument department...
Dwyer flow switch information
Posted by farzadad on 21 April, 2014 - 3:42 am
dwyer obsoleted flow switch
Topic: Power generation equipment control.
from the THERMAL GENERATION department...
exhaust spread
Originally posted by BBSALO on 18 April, 2014 - 4:51 pm
Why monitor the exhaust spread of a frame 9E gas turbine
New Replies:
Good answers, but the main question was, "Why do we have to take these readings?" The...

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