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Forum Archive
MODBUS Shared Memory Between Master and Slave
Posted by MusatkMu on 8 August, 2015 - 3:56 am
How do master and slave share memory?
How to Communicate with Allen Bradley 1394 GMC turbo
Posted by Muhammad Zeeshan Qureshi on 8 August, 2015 - 1:27 am
Problems Communicating with Allen Bradley 1394 GMC turbo system
MarkV - TCE1 Power Supply Over Limit
Posted by MFJohari on 8 August, 2015 - 12:28 am
What impact does "TCE1 Power Supply Over Limit" alarm have on RST?
FSR Split and DLN Split for GE 7FA.05 model Gas Turbine
Posted by Balaurugan1983 on 7 August, 2015 - 3:32 pm
Looking for detailed explanation about Fuel Stroke Reference and DLN Split
Multi-Stage Water Bath Control System
Posted by Peter on 7 August, 2015 - 10:42 am
Trying to design the software control system for a temperature control problem.
Mark-V Run status
Posted by R10 on 7 August, 2015 - 8:38 am
GE MARK-V Run status change from FSNL to Governor
MODBUS EMC Requirements
Posted by EMC on 7 August, 2015 - 4:45 am
MODBUS EMC requirements derived from CISPR 32 what - do you think?
ABB 800XA System Connectivity Server
Posted by suraj_ic4u on 7 August, 2015 - 1:59 am
ABB 800XA system connectivity server hanging problem.
Starting an Induction Motor with Rotor Already Rotating from External Means
Posted by Stormrider on 6 August, 2015 - 3:08 pm
Can I start a Squirrel cage Induction Motor with rotor rotated by external means over half its rated speed?
Strategy for Controlling Valves
Posted by pablogero on 6 August, 2015 - 12:50 pm
About two valves in series configuration over a discharge pipeline.
Wonderware 7.0 MBPlus I/O server problem
Posted by David Siler on 6 August, 2015 - 11:55 am
I am having issues adding (replacing) a redundant wondereware MBPLus I/O server to an existing system
GE 6B Gas Turbine RTD
Posted by davidmcc on 6 August, 2015 - 11:22 am
RTD intermittent fault on Mark 5 Speedtronic input
Conducted Emission Requirements MODBUS Port
Posted by Ole Hammer on 6 August, 2015 - 9:04 am
Which EMC emission requirements are applicable or recommended for a MODBUS port?
Excitation Limiters
Posted by MakBan on 6 August, 2015 - 8:27 am
What is the AVR's response when the excitation hits the Over Excitation Limiter or Under Excitation Limiter?
Input Constraint on LQR Controller
Posted by nchocka on 5 August, 2015 - 3:24 pm
The inputs u = -Kx from the LQR controller are too high that these signals cannot be physically generated. How do I constraint the inputs?
Over-Current and Reverse Power Trip
Posted by Ankur123 on 5 August, 2015 - 11:28 am
Problems with over-current and reverse power trip when running two generators.
Calculating Amount of Diesel a 7FA Burns
Posted by dennisbell on 5 August, 2015 - 9:50 am
How much diesel does a 7FA gas turbine burn per MW?
Pressure Transmitter
Posted by Nimmi on 4 August, 2015 - 10:07 pm
Looking for a pressure transmitter with pressure span 0-20bar but at maximum temperature >2mpa.
Micrologix 1400 MODBUS RTU Master
Posted by PSoriano on 4 August, 2015 - 2:22 pm
Using an Allen Bradley Micrologix 1400 and creating messages to read/write data from MODBUS configured gas meters.
OPC and TIA portal v12
Posted by luizGouvea on 4 August, 2015 - 12:47 pm
How can I install, configue and test the OPC driver on TIA portal v12?
Cooling with PI Controller in C#
Posted by mmurko on 4 August, 2015 - 7:53 am
Cooling control using hatch with PI controller (C#)
National CyberSecurity Center of Excellence
Posted by hperper on 4 August, 2015 - 7:50 am
Has anyone checked out the NIST NCCoE cybersecurity solutions effort? They are offering solutions and soliciting suggestions for critical infrastructure cybersecurity problems.
Measuring Volts from a Device with Output in Ohms
Posted by kanukantiy on 4 August, 2015 - 6:57 am
How to measure volts from a device which gives an output in ohms
Startup Acceleration Too Low
Posted by Maythem on 4 August, 2015 - 2:58 am
what does start up acceleration too low means?
HMI Cimplicity
Posted by shakaramiali on 3 August, 2015 - 11:41 pm
Signals cannot be displayed on the HMI screen.
Experiencing Black Screens on HMI
Posted by adeyinkadimeji on 3 August, 2015 - 4:19 pm
GE Speedtronic Mark VI control system has been powered down for almost a year. It was powered up recently, experiencing Black screens on HMI.
Best Operator Interface Poll
Posted by aalhaje on 3 August, 2015 - 11:08 am
Best, most versatile, operator interface to be used with a PLC?
AB PLC CIP Communication
Posted by maksyed on 3 August, 2015 - 8:31 am
AB PLC CIP communication with Ovation DCS Through (1756-EN2T) Ethernet/IP
Establishing a connection between Cimplicity & Mark VI
Posted by shakaramiali on 3 August, 2015 - 7:38 am
Sending the signal from MARK VI over EGD network and show it in Cimplicity HMI
Data Transfer from Allen Bradley to Siemens
Posted by govoni on 3 August, 2015 - 6:09 am
Mapping of one word of data between Allen Bradley and Siemens
Trip Logic for A Power Generator
Posted by Sundar2015 on 3 August, 2015 - 5:15 am
Like to know the Logic of Temperature loop of DE and NDE of a Generator bearing, driven by GE FRAME 5 GT
Artificial Neural Network on PLC
Posted by Ikhtiander on 2 August, 2015 - 9:47 am
Implementing an artificial neural network for a security application using a PLC.
Gas Turbine Generation Not Increasing
Posted by vinayak_paranjape on 2 August, 2015 - 8:56 am
Load (MW) is no longer increasing in to original MW.
GE Gas Turbine Axial Movement
Posted by ahdash on 2 August, 2015 - 2:00 am
Axial movement of load gear on GE Gas Turbine
Magnetrol Modul level XE35 Random Power Off
Posted by Roberto23 on 31 July, 2015 - 3:11 pm
Random power cutoffs on a Magnetrol Modul level XE35
IC Reference Erased
Posted by patxil on 31 July, 2015 - 9:46 am
Looking for help finding the reference of an integrated circuit.
Telemecanique TSX 17
Posted by carding55 on 31 July, 2015 - 2:12 am
What model is the replacement Telemecanique tsx 17 PLC?
Modbus to DeltaV
Posted by hnmcnabb on 30 July, 2015 - 9:39 pm
Modbus RS485 communication using serial card and DeltaV version 12
Heater Circuit Wiring and Fusing
Posted by baberb on 30 July, 2015 - 8:20 pm
I have several 240v heater cartridges on a 480v machine, using 2-3 single-phase transformers; How to best wire the circuits?
Generator Synchronizing Issue
Posted by Jim on 30 July, 2015 - 10:53 am
Generator that was recently rewound (G2) is connected back up. G1 is placed online. G2 is running. Turn G2 sync scope on and moves slowly CCW. Increase speed of G2, sync scope moves fast in CCW direction.
Asset Management System - HART Compatibility with Field Devices
Posted by harshmansingh on 30 July, 2015 - 2:50 am
Compatibility Issues between HART Versions between 'Asset Management System' and 'HART Field Instrumentation'
Turbine Generator Offline and On Turning Gear
Posted by ccjc81 on 30 July, 2015 - 1:31 am
Looking for answer to recent test question
Condenser Vacuum Levels Rising
Posted by seriouslyserious on 29 July, 2015 - 10:44 pm
Vacuum level rising above normal levels especially during start up
Change the IGV Angle Curve on Mark V HMI
Posted by hassanj on 29 July, 2015 - 9:09 pm
Looking for technical information about effects of changing the IGV angle curve on Mark V HMI
MODBUS RTU Byte Frame Question
Posted by Ryan on 29 July, 2015 - 3:36 pm
MODBUS RTU Frame with parity
Mark V Diagnostic Alarm
Posted by mbaviche on 29 July, 2015 - 9:47 am
On the morning of July 25th we encountered an unfamiliar alarm in our Mark V system for our GE7EA and would like feedback on resolving the issue.
Welding Near Gas Turbine
Posted by dax2172 on 29 July, 2015 - 7:17 am
Why is it not advisable to do welding near Gas Turbine?
Transformerless DC Injection Braking of AC Induction Motors
Posted by xylstra on 28 July, 2015 - 10:09 pm
Patent information sought ......
DC Motor Starter
Posted by ROn Wensley on 28 July, 2015 - 1:07 pm
Looking for a DC Motor Starter
SQL Device CitectScada 7.4
Posted by Nastya on 28 July, 2015 - 6:37 am
A problem with getting data to MS SQL Server from SQL Device CitectScada
D77D-DNA Devicenet Adapter
Posted by Ron Wensley on 27 July, 2015 - 12:04 pm
Looking for a replacement/substitute for the Eaton D77D-DNA DeviceNet to QCPort adapter
1756-IB32 ControlLogix Input Module
Posted by Forat on 27 July, 2015 - 5:19 am
How does the ControlLogix 1756-IB32 module work?
7EA-Dual Fuel--Liquid Fuel Purge 20PL-4 Valve
Posted by Controlquest on 27 July, 2015 - 5:13 am
Can some explain the functionality of the 7EA-Dual Fuel--Liquid Fuel purge 20PL-4 valve?
Air Filter Housing Structure
Posted by mechnub on 26 July, 2015 - 10:53 pm
Is it usual to seal the air filter housing structure with silicone sealant to prevent air leaks?
Emerson Rosemount Transmitter 3051
Posted by Irfan choudary on 25 July, 2015 - 1:41 pm
What is the purpose of front display Jumper on rosemount 3051 transmitter front display Alarm?
How to Brake Single Phase Motor
Posted by ETI2K on 25 July, 2015 - 9:03 am
Trying to reduce motor stop time after removal of power. Tried DC injection with limited effectiveness. Need to find a better method.
Gas Turbine Tripped on Fire Detectors
Posted by Sundar2015 on 25 July, 2015 - 6:55 am
GT tripped on UV fire detectors 2 on accessory compartment, there is no fire, what could be the cause??
High Vibration in Pump Drive End Bearing
Posted by sanjib_dibrugarh on 25 July, 2015 - 4:48 am
Higher vibration in Pump Driving end bearing about 80 micron is observed in all three pumps (TDBFP-A, B and MDBFP)
Elimination of Induced Volts in Compensating Cable
Posted by kaustuv on 24 July, 2015 - 4:33 pm
Eliminating varying voltages above 80 mV in compensating cable
Contactor Manufacture
Posted by FAman on 24 July, 2015 - 2:08 pm
Choosing Brands of contactors.
WinCC's TCP/IP Driver Problem on Windows 7 OS
Posted by lbolanos on 24 July, 2015 - 11:22 am
Communications troubles between a S7-300 PLC and Windows 7 OS
Emerson ROClink Integer Scaling Issue
Posted by riverjig on 24 July, 2015 - 9:14 am
My ROClink is not scaling my pressure transmitters correctly.
Making Electricity with DC Motor
Posted by mejaz170 on 23 July, 2015 - 11:53 am
Have two dc motors and want to rotate large dc motor with small dc motor
Varying Hysteresis
Posted by bowieanna on 23 July, 2015 - 10:45 am
Effect of varying Hysteresis into smaller setting while holding the set point constant
PLC Not Receiving Pulse from ABB WaterMaster
Posted by Barde on 23 July, 2015 - 9:15 am
How to determine if ABB WaterMaster Flow transmitter is sending pulses to PLC.
Duty/Standby Configuration for MODBUS TCP/IP
Posted by Wasko on 23 July, 2015 - 1:05 am
Looking for help with my network block diagram that uses MODBUS TCP/IP back to the ICSS
AC Vector Web Drive - Dynamic Brake Resistor Required?
Posted by PaulKraemer1 on 22 July, 2015 - 5:03 pm
AC Vector Drive for web handling application - will I need a dynamic brake resistor?
Dry Contact and Wet Contact
Posted by Irfan Choudary on 22 July, 2015 - 12:15 pm
Difference between Dry contact and wet contact in relay system.
Fast Refraction Index Measurement System
Posted by synthetiser on 22 July, 2015 - 11:27 am
Looking for a sub-second refractive index measurement system and large wavelength range
15 MW Generator in Island Mode Trips on Dead Machine Protection
Posted by rangacharya on 22 July, 2015 - 3:07 am
15 MW STG tripping on dead machine protection while running in island mode
Advice on What an Power Plant Electrical Maintenance Engineer Be Doing
Posted by WillyBlackson on 21 July, 2015 - 7:43 pm
What Should Electrical Maintenance Engineer Be Doing To Distinguish himself?
Posted by Sundar2015 on 21 July, 2015 - 8:43 am
GE Frame 5 tripped when full load 18MW, premix mode.
Cimplicity 6.1 License Issue
Posted by SM on 21 July, 2015 - 7:59 am
Cimplicity 6.1 licensing and windows compatibility
Cable Specification for Modbus-RTU/RS-485
Posted by Ivan R. Leite on 20 July, 2015 - 1:55 pm
Need cable specification for Modbus-RTU/RS-485 over a small distance.
Proview Open Source: How Stable / Mature is it?
Posted by controlcat on 20 July, 2015 - 1:42 pm
How stable is Proview?
Posted by joshua on 20 July, 2015 - 1:20 pm
Need help with modbus toolkit
PLC Control Help
Posted by newbieautom on 20 July, 2015 - 11:46 am
Troubleshooting controls design
Performance/Throughput Comparison For ModbusTCP FC 03
Posted by vmakwana on 20 July, 2015 - 6:16 am
Looking for performance comparison for FC 03 Requests when send multiple times sequentially and send once to read all registers.
SCADA System Without Historian / Data Logging
Posted by ranier1337 on 19 July, 2015 - 11:58 pm
Is a SCADA System required to have a Historian or Data Logging feature?
Calibrating IGV
Posted by Maythem on 19 July, 2015 - 12:15 pm
How to calibrate the IGV? Frame9E/simple cycle
Woodward 505 Redundancy
Posted by naveen on 17 July, 2015 - 11:56 pm
How does Woodward 505 redundancy logic function?
Solar and Heat Pumps Controlled by MODBUS Thermostat
Posted by Dave Angelini on 17 July, 2015 - 4:18 pm
Looking for software that uses MODBUS that could control the programmed temperature of mini-split heat pump based on available solar.
Controller Design for an Exponential Plant of the Form y=a*exp(bx)
Posted by longhorn009 on 17 July, 2015 - 8:40 am
PID control for plants of the form y = a*exp(b*x)
Level Control with Constant Outlet Flow Requirement
Posted by robit on 17 July, 2015 - 7:23 am
Controlling the level in a tank using a variable speed pump on the outlet.
PLC Based Control System Real Life Examples
Posted by Gaurav Pattnaik on 17 July, 2015 - 1:41 am
What are the LCB counts possible in a PLC based SCADA control system?
New to MODBUS and C++
Posted by joshua on 16 July, 2015 - 7:06 pm
New to MODBUS written in C++
DP Flow Transmitter In LPG Service
Posted by Mugen1977 on 16 July, 2015 - 3:24 am
Condensate water DP flow transmitter. Looking for solution.
Wonderware SCADA and AB PLC5
Posted by SanjayJ on 16 July, 2015 - 2:24 am
Can Wonderware Intouch SCADA communicate over DH+?
Connecting ADRE with MARKVIE
Posted by prasathesr on 16 July, 2015 - 2:08 am
Could someone tell me how to connect ADRE with MARKVI-E for seismic vibration analysis?
575VAC 3-phase Power
Posted by WillyB on 15 July, 2015 - 4:50 pm
Wondering about standard 575VAC industrial wiring configuration.
Gland Condenser System of Steam Turbine
Posted by naveed131 on 15 July, 2015 - 4:45 pm
What are the consequences of failure of Gland Condenser fan of Steam Turbine?
Cable Differential Protection
Posted by naveed131 on 15 July, 2015 - 4:39 pm
Difference between Cable Differential Protection and Differential Protection?
UP/DOC Programming Software
Posted by adddad on 15 July, 2015 - 4:14 pm
Looking for info on UP/DOC by XCEL programming software
LCI - Static Starter
Posted by gpk on 15 July, 2015 - 9:53 am
Looking for writeup or presentation material on LCI
Backup of Mark-V
Posted by samson16 on 15 July, 2015 - 8:29 am
Please advise me the procedure to take a Mark-V backup
Zero Setting of Gauge Pressure Transmitter
Posted by AhmadH on 15 July, 2015 - 5:45 am
How to do zero setting Gauge pressure tx.
MKVIe files
Posted by Thomas on 14 July, 2015 - 7:15 am
m6b equivalent files in MKVIe
Three-Element Boiler Controller
Posted by Sam Roberts on 14 July, 2015 - 5:48 am
Lead/lag compensation on steam feedforward (3-element boiler drum controller).
IEC102 Protocol
Posted by ranjitha on 14 July, 2015 - 2:04 am
Does IEC102 protocol supports parameters other than Energy (Integrated Total), such as Instantaneous parameters?
Cimplicity 6.1 - Dongle Not Working
Posted by teletec on 13 July, 2015 - 1:54 pm
Told Cimplicity 6.1 required dongles, which are not being recognized. Another forum site stated Cimplicity 6.1 Requires a soft license and not to upgrade 7 or 7.5 as will ask for a dongle.