from the Master Thesis world department...Master Thesis Guidance With Protocols
Trying to decide which communication protocol is better for the API I am designing for my Master Thesis.
from the Forum department...Contactless Card Reader and PLC
How to connect contactless card reader to PLC?
from the Automation List department...Why 4-20 ma is used in Analog Signals?
Why 4-20 ma is used in Analog Signals?
By Roy Matson on 26 September, 2014 - 2:18 am -
The point will be argued until 4 - 20 mA is dead and buried. Did anyone mention it was just a...
from the Instrumentation department...Thermocouple Temperature Drops Suddenly
Unexplained temperature drop while process is running
if grounded t/c's are being used, ground loops between the thermowell locations and its ground path...
By cmshelton on 25 September, 2014 - 7:24 am -
If your getting any kind of moisture or water that can cause wrong readings also....
I agree with the suggestion of a short between the + and - wires somewhere. It could even be a...
If you get a high mV reading across the thermocouple wires, then - moving the wires to make the...
By Litto on 24 September, 2014 - 1:21 am -
but if its the problem with cable or element, would i get milli volt corresponding to 950 or 900 on...
A drop to 100 is indicative of a short creating a false junction. A drop to zero is indicative...
If you are dealing with 950C as opposed to 950F, it could be a problem with the thermowell or the...
Somewhere between the hot junction and the analog input there's a short circuit in the extension...
from the Forum department...Free HMI/Process control software
Introduction of free, platform independent and open source HMI/automation software
Even if late, I'd like to chime in and mention there is also Eclipse SCADA...
from the Forum department...DCS analog input problem
DCS Analog input signals didn't work with ADAM card
By dave on 25 September, 2014 - 5:53 am -
I just want to comment that this is a great thread to follow. I enjoyed reading the dialog very...
Mr. Fawzy, That's a very interesting observation. A common for all channels is what allows...
Hi David, I got one information form yokogawa training material that last number in AI/AO cards...
from the Engineer department...Why Consider Third Party Companies When Retrofitting/Supporting Your Gas Turbine Controls
Why do people who believe that the OEM is the best alternative for off-warranty service & retrofit contracts why?
from the Forum department...Encoder input module in PLC
For a 1700 ppr encoder input, is it necessary to use a High Speed Digital Input module in PLC?
By sensorless on 25 September, 2014 - 3:39 am -
> You have to look at a couple of things. > One is whether you need a quadrature signal or...
By Bob Peterson on 23 September, 2014 - 9:41 am -
You have to look at a couple of things. One is whether you need a quadrature signal or whether a...
from the Just cant figure it out! department...High Speed counter S7-200
I need help in figuring out how to use a HSC as a tachometer with the siemens S7-200. It seems simple enough.
By reza ghoddoosian on 24 September, 2014 - 5:42 am -
hi i am looking for an example about HSC in S7-200 so badly, i need a tangible example. i...
from the Forum department...Synchronizing Two ABB DCS Controllers
One type of status reading of ABB DCS says they are Synchronized, but other says they are 35% in Synchronized.
from the networking department...Information regarding tag in Control logix over Ethernet/IP
Are controller tag details for control logix is available on ethernet/IP? Using 1756-EN2T module in controller chassis for communication.
By Ikhtiander on 21 September, 2014 - 3:44 am -
Psahu, It is depend on what third party devices you would like to connect. Can you be more...
By Bob Peterson on 20 September, 2014 - 9:48 am -
The Ethernet/IP protocal is well defined in the spec for it. Best bet is to either buy the spec and...
from the Forum department...Yokogawa DCS Analog Module AAI143
Difference between analog mA value and their correspondent raw value.
I checked the Tunning parameters and there is an error. Maybe is a good idea to do an offline...
Tunning-Raw Value should be
4 mA ----> 0% 6.16 mA ----> 13.5% 8 mA ...
Recently there was an unresolved thread involving the same model Yokogawa AI, here ...
from the Instrument and Control department...Siemens S5 CPU 922 Run and Stop LED Do Not Turn ON
Run and Stop LED on front of Siemens S5 922 CPU doesn't turn ON on powering of rack. Only BASP LED on front of CPU is turned ON.
By Bob Peterson on 17 September, 2014 - 5:26 pm -
We have started getting a fair number of service calls for S5 units. They are closing in on thirty...
By Kevin Frechette on 17 September, 2014 - 1:37 pm -
The only thing I can think of is that the Rack is faulted. The backup battery may be missing or...
I have tried doing cold reset and warm rest on processor. The situation remain as such. Both STOP...
from the ModbusTCP department...PROSOFT MVI56-MNET Slave Response Time
PROSOFT MVI56-MNET communication response time and performance
from the PLC comm error department...TSX Premium PLC Problem
Telemecanique TSX Premium PLC unstable operation
By visitor on 17 September, 2014 - 10:28 am -
Thank you very much for your answer. I got contact with local Schneider representatives. They...
By chud on 17 September, 2014 - 4:02 am -
This could be programming......hardware....etc. etc. Without being online with the plc when this...
from the Forum department...RSLinx issue in VMWare WIn 7 32 bit VM
I can do a serial upload and download but I cannot go online with RSLogix 500 inside a VM running WIn 7 32 bit
I just got the 2 port version and it works like a champ. Upload, download and online. Thanks! ...
from the Communication department...Communication Between Control Logix and Centum VP Using Ethernet/IP
Communication not getting established between Yokogawa (ALE-111) and Control logix using Ethernet/IP.
from the seeking product recommendations department...Modbus TCP temperature monitor
I'm looking for a product recommendation
I am looking for much the same thing, a simple temp and humidity for my server room. I just want...
from the Forum department...Upgrading Yokogawa CS3000 R3 DCS
Our existing DCS is only compliant with Windows XP HMI's having Vnet communication. What is the best way to upgrade the system for compliance with Windows-7 and having Vnet/IP communication?
from the Process Control department...Proficy Machine Edition 8.0
Proficy Machine Edtion 8.0 and 8.5
from the opc department...Communication between Triconex PLC and Matrikon OPC Server Using TCM Module
Issue with Communication between Triconex PLC for SOE and Matrikon OPC server using TCM Module
from the Forum department...Voltage Levels in DO Cards of PLC
Which DO cards are better from the Reliability perspective - cards 24 VDC or cards that give 110 VAC?
By Steve Myres on 13 September, 2014 - 5:49 pm -
My take is a bit different. DC are the most reliable in most circumstances. Solid state outputs...
By Curt Wuollet on 12 September, 2014 - 10:34 pm -
The most reliable will be 24VDC transistor outputs. Relays have a lifetime. Triacs are in the...
from the Electrical Engineering department...Communicate ER300P energy meter with PLC
How do I enter programming mode and communicate ER300P meter with PLC SIEMENS 200?
By Ummachan on 13 September, 2014 - 3:03 pm -
I communicated the meter with PLC. Changed the Meter ID using PLC program. The Values or the...
from the Forum department...Concept 2.6 Compatiblity Issue
Running windows 8.1 64bit OS and have a concept 2.6 compatibility issue.
Concept 2.6 is a Win-16 program. It still runs on new Windows OS's but only the 32-bit versions. ...
from the Instrumentation department...ABB Flowmeter -Flow Data Is Less
flow meter data is less compared to other flowmeters
what are the units for the 20 mA value? how long does it take for the 1 meter level change?...
>> "flow meter data is less compared to other flowmeters" >other flowmeters? ...
> 1) Is this a new installation or a new problem with an existing, previously satisfactory...
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