from the The Unknown Entity department...One control variable for two loops
Can we have one control variable control two different loops?
Power in a pressure system = volumetric flow x pressure drop. If the system has a high flow, then...
By otised on 16 May, 2014 - 8:04 pm -
If you want to do the job right, add a differential pressure transmitter across the control valve...
By Rob on 16 May, 2014 - 4:37 pm -
The basic rule is ... One measurement = one PID loop But of course you have two actuators - each...
By Bob Peterson on 16 May, 2014 - 9:20 am -
Well, you need to pick what you want to control. the reality is that the VFD is really controlling...
One approach which I have seen used with boiler feedwater pumping systems is to use the valve to...
from the Forum department...Modbus TCP to PLC using vb.net
visual basic code to write to a Schneider Premium PLC via TCP. The only problem is that i cannot read the response back from the PLC.
By martijn pijpers on 16 May, 2014 - 7:06 pm -
> My dll can do all of this and it's free. It's called Shortbus. Look up "shortbus modbus...
from the XML Comms department...Web XML into DCS/PLC
Require a solution for communicating XML data from the web into a DCS / PLC system.
from the puzzled new user department...ROCLINK800 Floboss 107 MODBUS Slave configuration
I am trying to configure the Floboss 107 as a MODBUS Slave with specified register I/O parameters as specific MODBUS addresses.
By kardel on 16 May, 2014 - 3:26 am -
I got the same problem with flobos 103 and micrologix 1400. I have been able to read the modbus...
from the OPC Performance department...OPC Server Performance optimization
How can I optimize OPC server Performance?
I've had very similar problem once with AVReporter when I did a project for a large...
from the Critical classification department...PLC in Class 1 Div 2, cooling options
are cooling options available for panels in Class 1 Div 2 areas?
By Steve C on 15 May, 2014 - 1:02 pm -
Hello, these are even better enclosure coolers: Check out these guys...
from the What we have is Failure to Communicate! department...Network Issues
My network settings are correct but I am not able to connect to the IP address 10.1.1.250
from the Forum department...2oo3D voting
Explain if 1oo2D voting is just similar to 2oo3 voting for ESD system.
Continuing on with the subject, i am a little confused. I have a process plant with reactor...
from the ELECTRONICS department...Connecting a weight display using S7-200 MODBUS Master
how to connect two weighing display to port 0 of CPU 226 via modbus master library and read the indicated weight of the display in software v4.0 microwin step7 SP5
from the Any advice department...Option to run AC lube oil in manual YES OR NO
Should we have the option to run in local?
Craig, Every site is not the same. It all depends on what was bought, what was sold, and what...
By Dave Amundson on 9 May, 2014 - 9:42 am -
I can't comment on your switchgear options to run the AC lube oil pump, but bearing lube oil feed...
from the Forum department...Multiple Controllers on one RTD
How can I use the same RTD for more than one controller?
By Roy Matson on 9 May, 2014 - 3:50 am -
Yet another way Convert the temperature to mA (4-20) then send it to one receiver. If that...
By W.L. Mostia on 7 May, 2014 - 2:51 pm -
If you connect three controller to the same RTD, which is technically possible as other posters...
By Steve Myres on 7 May, 2014 - 9:49 am -
Yes, that should work, assuming the total loop resistance is within the transmitter's limit and the...
See the blog on this topic at the link below: http://tinyurl.com/mtaqm6f > Can I connect a...
from the Vibration Monitoring department...Emerson CSI 6500 to ControlLogix PLC
Emerson CSI 6500 Vibration Monitor needs to talk Modbus TCP to ControlLogix PLC
By Bob Peterson on 8 May, 2014 - 5:23 pm -
Is it possible the data is coming in with byte order swapped? Or the data is in floating point...
from the High department...Honeywell connection an output Scada point to a PID Block?
how connect an output Scada point to OP PID Block in control module?
from the Automation List department...Ground to Neutral Voltage-Limit
DCS floating voltage failure damaging workstation motherboard
Try to short your Neutral to Ground. In the UPS distribution panel, short Neutral line to ground...
from the safety department...Guardlogix Controller
What is the difference between a Rockwell Guardlogix controller and a Rockwell ICS triplex AADvance Controller in terms of Functional safety?
Hi Ikhtiander , Thanks.. Regards Tharun ...
By Ikhtiander on 2 May, 2014 - 2:37 pm -
Hi Tharun, Guardlogix and AADvance is different in their application, guardlogix mainly applied...
from the Urgent department...Time and Date in Honeywell control builder
How could use time and date in control module?
> 10.1.0.131 is one of your experion server's IP address? Because I think NTP > from the...
By Robert Perez on 29 April, 2014 - 2:14 pm -
Hi, this is strange indeed. It seems you are using the variable names correctly, but the time is...
Hi Robert, Thank you very much sir i really appreciate it Thanks to your help i finally find...
from the Communication department...how to detect over pressure
Sensor for detecting if pressure is out of 4 to 6 bar inside a pneumatic pipe
By tapas on 3 May, 2014 - 4:51 am -
Thank you for your reply....
By Jim Delaney on 2 May, 2014 - 4:15 pm -
Google "industrial pressure switch". You'll need a switch assembly (sensor and...
from the Forum department...Zebra printer communicate with Delta PLC
Communicating between a zebra printer with a Delta PLC for Labeling Application.
from the Forum department...how to send floating point numbers using the ModbusRTU protocol?
how to send floating point numbers using the ModbusRTU protocol?
By Harvard on 1 May, 2014 - 5:37 pm -
"Could you reference links of a simple program/application that works with the ModbusRTU...
from the Forum department...Reading Data from a Scale with Quantum Unity Pro and 140 ESI 062 010 Card
Reading ASCII Data from Weigh Bin Scale with Quantum Unity Pro and 140 ESI 062 010 Card
from the Forum department...Formula for Chemical Dosing
formula to use for Calcium Nitrate concentration?
from the Automation List department...Linux Ethernet/IP Driver
How to use Red Hat Linux to collect data directly from Allen-Bradley CompactLogix PLCs?
By Mark on 30 April, 2014 - 1:27 pm -
Hi, Automated Solutions' ASComm.NET can be used with Visual Studio .NET and Mono framework to...
Try the OPC-UA package from Inductive Automation. It is designed to run on multiple platforms...
from the Forum department...Wireless Sensor Networks for Industrial Applications Workshop (WSNIA'14) Call for Papers, Due on May 30th, 2014
Call for Papers/Posters: 2014 International Workshop on Wireless Sensor Networks for Industrial Applications (WSNIA-2014), August 17-20, 2014, Niagara Falls, Ontario, Canada.
from the Forum department...Does IEC61511 allow an ESD system on a control network?
Does IEC61511 allow an ESD system to be resident on a control network?
from the Normal department...Honeywell scrip language
How can we learn Honeywell Scrip language?
Search support at http://www.honeywellprocess.com Or if you have training budget you can find a...
If everybody minded their own business, the world would go
around a deal faster.
-- The Duchess, "Through the Looking Glass"