Confusion over SRV Checkout on Frame 6B with a Flenco DLN1 Gas Module
Frame 6B (as only) combustion turbine DLN1 module has a fisher V300 ball valve as an SRV. Confused on discrepancies between original control document and original commissioning book.
Modbus Communication with Danfoss VLT FC360
Cannot fetch data on serial communication using Modbus with Danfoss VLT FC360.
Fluid Batching Application
Water batching process control solution which will have a batch counter (E+H RA33), Control Valve, and E+H Flowmeter (Picomag)
By d on 23 March, 2019 - 6:27 am
There are thousands of valves out there in the market. It all depends on your piping and various...
Wheelspace Thermocouple Exact Location
Want to gain a clear understanding of wheelspace thermocouples
Serial Communication with Gardner Denver ES+ Controller
Having trouble trying to communicate to Gardner Denver ES+ Controller via RS232 serial connection. Trying to send ASCII requests to controller but I don't get anything back.
Frame-3 GE GT EOP Motor Characteristic Curves
Looking for Frame-3 GE make GT EOP motor characteristics, efficiency load curves, etc.
Difference between FF, HART, 4-20ma communication. Does a FF transmitter require 4-20ma signal?
By john on 21 March, 2019 - 8:43 pm
1. 4-20mA is an analog signal that is converted to a digital value at the host PLC, DCS, or other...
Need modbus help. Issues with read functions sending to master.
Learning Supcon and Other DCSs
Posted by santosh sarma on 21 March, 2019 - 1:46 pm
Portability of things learned from using Supcon to other DCS
Should I use a Regenerative Drive?
Load is driving motor so motor is actually working as generator. Is there any advantage of installing Regenerative drive?
By d on 19 March, 2019 - 3:38 pm
it is reducing power feed to the plant, so you are currently benefiting with no extra expense....
Flue-gas Desulfurization (FGD) Logic Insterlocks Design
Are there any regulations (EU or others) that define the limitation and regulation of the startup of a Boiler if its FGD is out of service?
By d on 21 March, 2019 - 12:06 pm
Rather doubt it, and certainly not in the plants I worked on. Boiler safety governs and likely...
Selecting a PC for SCADA Systems
Selecting a PC for installing SCADA.
By Bob on 21 March, 2019 - 11:42 am
As others have mentioned, adding details of the system may be crucial for an accurate response. I...
By MFT on 19 March, 2019 - 1:37 am
Hello, Slowdown of computers after some time is common but lockup of the computer points at a...
By James Ingraham on 18 March, 2019 - 5:25 pm
What SCADA software and version? What operating system? I happen to be aware of a bug in an old...
Combined Cycle Power Plant Start Up
Controlling Vertical Type HRSG's HP drum metal temperature during start up with GE Frame-9E Dual Fuel standard combustion Gas Turbine.
Working with Honeywell TDC EB Files
Converting Honeywell TDC EB files to Excel
What is CEMS used for and how does it operate in Power Generation gas turbines (GE Frame 9e)?
Activate Tables Menu in Instrument index of INtools
Activating the tables menu in SmartPlant Instrumentation
Is there a device which acts as a HART slave and Modbus Master?
By John Hamilton on 19 March, 2019 - 4:44 pm
I have a situation where we make a Natural Gas Analyzer which has Modbus (RS232, RS485, TCPIP), our...
VFD on 300 KW , 440 Volts Compressor
Replacing Reduced voltage starter to VFD on 300KW Motor drive compressor
By d on 19 March, 2019 - 3:43 pm
That is only a 300 HP motor. To change the drive, you have to carryout a mechanical and process...
Rosemount Diff. Pressure transmitter problem
reading of the transmitter problem
PG6111FA M-VIe control IGV hunting in Preselect Load
IGV hunting during only on preselect load operation.
SFC CPU Card Replacement Fault
Converteam SFC installed at our site and now have problems after replacing a problem CPU card.
Polling Slaves from 2 Masters
Posted by Sean Campbell on 18 March, 2019 - 8:20 am
Can devices configured as Modbus Slaves send data to 2 separate Masters?
By Fred Loveless on 18 March, 2019 - 10:59 am
No it is not possible to have 2 Modbus Masters talking to the same serial slave device. The Slave...
A New Modbus-TCP Server Simulator
Posted by Talat Dogan on 15 March, 2019 - 9:47 am
New Modbus-TCP Server Simulator freeware is ready for download.
By Talat on 19 March, 2019 - 2:02 am
Thank you very much for your comment and suggestions. I appreciate you taking the time to comment....
Looking for advice on the purchase of a training kit to learn PLC programming at home
By James Ingraham on 18 March, 2019 - 5:23 pm
I believe the MicroLogix 1100 line is effectively dead. Everything has moved to the Micro800...
modbus RTU to bluetooth converter
Mark 5 Processor Showing Faults
Mark 5 processor showing faults and alarms after restart
Working on simulation for 6FA machine. Need help to debug.
Installing a Flowmeter to Calculate Gas Quantity and Display Information in Control Room
Installing a new flowmeter to calculate gas quantity passing through a pipe and displays in control room
Generator VAr vs PF control
AVR VAr control VS Voltage control
I am building a panel with a PLC, an HMI, and a cellular modem ... Do I need a switch or router?
Mark VIe Controller Turbine Block Library
Understanding turbine control using control blocks.
Top 10 list of SCADA/HMI companies
Posted by Eric Perrier on 22 August, 2002 - 6:29 am
Who are the major SCADA companies on the US, European and world markets?