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Modbus Communication with Danfoss VLT FC360
Posted by MONAK on 20 March, 2019 - 6:04 am
Cannot fetch data on serial communication using Modbus with Danfoss VLT FC360.
Activate Tables Menu in Instrument index of INtools
Posted by dovestar on 20 March, 2019 - 3:07 am
Activating the tables menu in SmartPlant Instrumentation
SFC CPU Card Replacement Fault
Posted by ansmehmood on 19 March, 2019 - 11:17 am
Converteam SFC installed at our site and now have problems after replacing a problem CPU card.
VFD on 300 KW , 440 Volts Compressor
Posted by mushahid on 19 March, 2019 - 12:46 am
Replacing Reduced voltage starter to VFD on 300KW Motor drive compressor
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?
High fuel flow
Posted by psajay1992 on 18 March, 2019 - 3:04 am
Working on simulation for 6FA machine. Need help to debug.
Modbus RTU to Bluetooth
Posted by chromeaccent on 15 March, 2019 - 11:50 am
modbus RTU to bluetooth converter
PLC Programing Beginner
Posted by kwameplc on 15 March, 2019 - 11:04 am
Looking for advice on the purchase of a training kit to learn PLC programming at home
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.
Coal Power Plant Coordinated Unit Control
Posted by Micik1 on 15 March, 2019 - 9:11 am
Basic types of unit control in a coal fired power plant
Model-free Controller Simulation
Posted by David on 15 March, 2019 - 8:57 am
I am designing model-free controllers and I would like to simulate its performances.
Installing a Flowmeter to Calculate Gas Quantity and Display Information in Control Room
Posted by abdouzita103 on 15 March, 2019 - 3:58 am
Installing a new flowmeter to calculate gas quantity passing through a pipe and displays in control room
Should I use a Regenerative Drive?
Posted by imran0413 on 15 March, 2019 - 1:51 am
Load is driving motor so motor is actually working as generator. Is there any advantage of installing Regenerative drive?
Mark 5 Processor Showing Faults
Posted by Hamed87 on 14 March, 2019 - 12:57 pm
Mark 5 processor showing faults and alarms after restart
Online Calculator for Time-Optimal Jerk-Limited Trajectories
Posted by cheeco on 14 March, 2019 - 6:14 am
Calculate and download time-optimal trajectories with jerk limitation online
Loadcell with S7 1200 and HMI
Posted by burakuzun on 13 March, 2019 - 4:03 pm
weight control with using Siemens S7 1200 and HMI screen
Induced Over Voltage Test of Transformer
Posted by shaheed on 13 March, 2019 - 8:09 am
What will be the normal current during during the test of induced over voltage of a 200KVA 11KV/400V 3 phase transformer?
PG6111FA M-VIe control IGV hunting in Preselect Load
Posted by STLTLS on 13 March, 2019 - 7:28 am
IGV hunting during only on preselect load operation.
Mark6e (MK5 migration) Exhaust Thermocouples Read Low
Posted by borrellimd on 12 March, 2019 - 2:52 pm
Mark6e (MK5 migration) exhaust thermocouples all read ~20DegF low
SRV and GCV Calibration in Cranke Mode
Posted by Mcc on 12 March, 2019 - 1:16 pm
How I can calibrate the SRV&GCV with crank mode in MARK 6?
How can I get a PCB for prototype?
Posted by Jimmy Saldivias on 12 March, 2019 - 12:30 pm
Need to manufacture 10 boards according to a Texas Instruments design TIDA-01575 to Wirelessly Monitor Vibration on Motors but cannot get manufacturers for it.
Integrating a non-Modbus system with a Modbus BMS
Posted by EYAD F on 12 March, 2019 - 10:37 am
Ethernet TCP/IP with a BMS system that supports MODBUS.
Commuincating with Laser Caliper (Laser Online LST-25)
Posted by Leafy on 11 March, 2019 - 2:36 pm
Anyone have experience communicating with a Chinese brand Laser Online LX-25 laser caliper via MODBUS RTU protocol?
PLC for Hamilton Visiwater DO Probe
Posted by dpm321 on 11 March, 2019 - 12:52 pm
Connecting a Hamilton Visiwater DO probe to a suitable PLC
Selecting a PC for SCADA Systems
Posted by alisnelectric on 10 March, 2019 - 1:37 pm
Selecting a PC for installing SCADA.
PLC Control System Design Documentation
Posted by alisnelectric on 10 March, 2019 - 1:29 pm
plc control system documentation
Changing Modbus MBAP Header
Posted by Oemer on 9 March, 2019 - 4:16 pm
Is there a way to define the MBAP header (ADU) themselves? I want to send: 40 02 AA BB always as Header.
Programing Combox-s Module for Modbus Networking in Atlas Copco Elektronikon MkIV Compressor
Posted by hph1988 on 9 March, 2019 - 12:33 pm
How can I program combox-s module using FDP for Modbus networking in Atlas Copco's Elektronikon MkIV compressor?
Bubbler Level Measurement in Closed Vessel Vacuum
Posted by Jangir on 8 March, 2019 - 10:48 am
How use a dpt as a bubbler level transmitter in vacuum vessel 70 kpa-a.
Generator Differential Protection Operation During Connecting Generator to the Network
Posted by protectionfreak on 6 March, 2019 - 7:40 pm
Differential relays operation during failed attempt to close the generator circuit breaker
GT Air Inlet Housing DP Measurement Location
Posted by luowilliam on 6 March, 2019 - 3:57 pm
Specifying DP measurement requirement for GT air inlet housing?
MKV Analog Input Freezes After Change in Configuration
Posted by jhon123 on 6 March, 2019 - 3:48 am
MKV analog input Freezes after change to configuration from TMR to Simplex
MODBus Memory Mapping
Posted by Logan on 5 March, 2019 - 3:41 pm
MODBus memory mapping for registers
Working with Honeywell TDC EB Files
Posted by EMesher on 5 March, 2019 - 10:20 am
Converting Honeywell TDC EB files to Excel
Modbus I/Os Read/Write from Micro850
Posted by omer on 4 March, 2019 - 4:01 am
How to relate a Tag in CCW to a Modbus register
Pressure Transmitter Calibration
Posted by jyothis_sebastian on 4 March, 2019 - 2:50 am
Issue checking a datasheet for pressure transmitter submitted by a contractor
Photoelectric Sensors
Posted by Steven on 3 March, 2019 - 3:27 am
Photoelectric sensor sees small gap in product spacing and machine faults on insufficient gap
Power Plant Operation
Posted by er_dhavalpatel123 on 2 March, 2019 - 8:45 am
Looking for simple graphic procedure/manual on trend/alarms/events for Alstom ALSPA and Emerson Ovation
Deltav Controllers
Posted by walid25 on 1 March, 2019 - 4:29 am
The difference between deltav controllers
Honeywell DCS
Posted by SHAH REZA on 28 February, 2019 - 5:20 am
Difference Between Honeywell Plant Cruise By Experion and Experion PKS DCS system?
Questions and Insights about Aeroderivative Gas Turbine
Posted by Isulamu on 28 February, 2019 - 1:50 am
Some questions about the mechanical side of the aeroderivative GT.
Printer for Mark 4
Posted by aperkot16 on 28 February, 2019 - 12:54 am
Using a laser printer for the control panel of a gas turbine Mark 4
Min Value Gate Operation
Posted by gustavo_marcelo on 28 February, 2019 - 12:01 am
Some questions about Min Value Gate operation
Starting a GE Gas Turbine
Posted by GODWIN REUBEN on 27 February, 2019 - 8:46 pm
Starting GE Frame 5 turbine from the HMI
Automation Protocol Through Ethernet
Posted by Sreejith on 27 February, 2019 - 6:26 am
Is it possible to communicate multiple TCP IP protocols through a single port?
Unable to Install ToolboxST V04.07.06C on Laptop
Posted by Zaasher on 26 February, 2019 - 7:49 pm
Unable to install Toolbox ST V04.07.06C on laptop with Windows 8.1 Enterprise.
Variable Frequency Drive
Posted by unexpo on 25 February, 2019 - 2:05 pm
Altivar variator drive does not work correctly when frequency increases after passing 10 HZ.
Actuator Friction Modelling
Posted by timiane on 25 February, 2019 - 3:54 am
My project is modeling an actuator. It consists of a contraction between a leadscrew and a spring. I have encountered some issues modeling the friction component of the system.
Modbus TCP and Citect SCADA 6.10
Posted by raimoretku on 22 February, 2019 - 9:04 am
Modbus TCP driver for Citect v6.10?
Active-X Modbus That Supports Double Floating Point (64bits)
Posted by Fernando Herranz on 22 February, 2019 - 5:52 am
Looking for a Active-X Modbus supporting Double floating point (64bits)
LQR on a State That Has Frequency "Zeros"
Posted by Ian on 20 February, 2019 - 12:29 pm
Dampening oscillations at impedance roots
Switch or Router?
Posted by xtal_001 on 20 February, 2019 - 11:59 am
I am building a panel with a PLC, an HMI, and a cellular modem ... Do I need a switch or router?
Modbus RTU for Micro Controller without Library
Posted by bkhcm94 on 18 February, 2019 - 8:39 pm
Help me program Modbus master Function 03 in micro controller without library
Modbus's Registers Real Time Actual Value
Posted by khaledelrady on 17 February, 2019 - 10:49 pm
Modbus's registers real time actual value problem
Fire and Gas Fault Alarm
Posted by elmeskawi on 17 February, 2019 - 11:14 am
FGP-AI420LO Doesn't distribute 24 Vdc to both of Gas Detector at house filter and heavy duty
Changing/Replacing Lube oil
Posted by T.Operator on 15 February, 2019 - 2:12 pm
Changing lube oil
Oil Leak at Brush Generator - Non-exciter End
Posted by Dami Paul on 15 February, 2019 - 7:23 am
Serious leak on non exciter end of Brush generator.
Suitable Sensor for Detection of Carry Over Condensate in Gas Line
Posted by Aazim on 15 February, 2019 - 2:13 am
Liquid Carry Over Detection Solution in the pressurized gas line?
Mark V Simplex R Core at A8
Posted by Power Island on 14 February, 2019 - 3:29 pm
Problem at a site. R core remains at A8 and is frozen, and C core at A5 state.
Liquid Fuel Burner FF Ratio
Posted by Aan on 14 February, 2019 - 2:06 pm
what is the Burner FF Ratio?
Posted by planetmars12 on 14 February, 2019 - 11:57 am
Can not connect my PC to the drive via serial connection.
Different Loop Tuning Methods vs Trial and Error
Posted by chemohanom on 13 February, 2019 - 4:32 am
Question is about whether to use lambda tuning or ziegler-nichols method versus trial and error loop tuning.
Coriolis Flow Meter Density Deviation
Posted by Muhannad on 13 February, 2019 - 1:34 am
Coriolis Flow meter Density Deviation 44% and more
Combined Cycle Power Plant Start Up
Posted by rokan_123 on 12 February, 2019 - 12:43 pm
Controlling Vertical Type HRSG's HP drum metal temperature during start up with GE Frame-9E Dual Fuel standard combustion Gas Turbine.
AEG Logistat A020
Posted by BlueStone9 on 12 February, 2019 - 11:17 am
Help converting AEG Logistat A020 statement code
Micro PLC TSX17
Posted by Seif_elnasr on 12 February, 2019 - 6:35 am
Programming Micro PLC TSX17
MOBDUS Communication for C2000
Posted by ASHWINEE on 12 February, 2019 - 4:44 am
How to program host and slave using C2000 launchpad
GE MARK VI Fault Code
Posted by gbuendia on 11 February, 2019 - 4:51 am
What do the fault codes FC432 to FC436 "Logic Signal $256L Voting Mismatch" mean.
ISA through an era of dramatic change
Posted by KenCrater on 10 February, 2019 - 10:18 am
As with most professional societies, ISA faces a dramatically changed environment.
Ma to 0-10 Volt Conversion
Posted by sravan on 9 February, 2019 - 11:40 pm
Changing 0-10v from HART level transmitter
Siemens SGT700 Gas Turbine Alarm
Posted by nirpendra on 8 February, 2019 - 4:33 pm
Siemens gas turbine Model: SGT 700 showing an alarm "GAC in operation"
Effect of Mass Flow Rate when using Orifice Plate
Posted by winchill on 8 February, 2019 - 12:29 pm
What would the effect on the mass flow rate be if a measurement orifice plate was added to the pipeline?
Possible Solutions for Grid Tied Solar Inverter Alternate Energy Input
Posted by oneoff on 7 February, 2019 - 11:05 am
Feeding a 1000VDC (Max input) grid tied solar inverter from an alternate DC+ bus energy sources. Any current regulation problems anticipated?
Learning About and Getting Started in Power Generation
Posted by techiekoko on 7 February, 2019 - 5:02 am
Learning about turbines, particularly gas turbines
Siemens Profinet over Radio Link
Posted by myacirkhan on 6 February, 2019 - 5:24 am
Looking for some help on Siemens S7 V9 Profinet over Radio Link
RSLogix 5 Analog Scaling
Posted by planetmars12 on 5 February, 2019 - 8:23 pm
Trying to replace 4 proximity switches with a laser using a 4-20mA signal.
Citect Trend Data Exporting
Posted by adamcc on 5 February, 2019 - 7:41 pm
I need to export a large amount of trend data from Citect SCADA to spreadsheet format (CSV, DBF, etc.). However inbuilt functions all seem inadequate. Am I missing something?
Communication Between AC Servo Drive to PLC
Posted by Rahul singh on 5 February, 2019 - 3:14 am
Connected delta AC servo motor with Omron PLC, but servo not running
GT Rceived Alarm in MARK VI for - E1 LOOKUP ERROR
Posted by girish_5586 on 5 February, 2019 - 2:00 am
How to troubleshoot E1 LOOKUP ERROR for MARK VI Frame 7FA
Gas Turbine Governor Controller
Posted by shakeelahmed6993 on 4 February, 2019 - 9:31 am
Gas turbine governor controller deviation
GE Speed Control Loop
Posted by gustavo_marcelo on 4 February, 2019 - 8:39 am
GE speed Control loop/load control questions with numerical example
Control Valve Position Transmitter Replacement
Posted by mhcontroller on 4 February, 2019 - 4:19 am
Feasibility study of a position transmitter replacement. First tests with new sensors resulted in valve hunting. May the differences in sensors response time be the cause?
Generator Differential Protection Trip Issues
Posted by jr94 on 4 February, 2019 - 1:24 am
Generator differential protection trip issues after upgrading turbine parts that included upgrading from MarkV to MarkVIe control system
Converter/Inverter to Marry Synychronous AC Generation to Solar Inverter Grid Tie
Posted by oneoff on 2 February, 2019 - 5:19 pm
Four years producing 480VAC from standby natural gas genset (flare gas fuel). Looking for simplified certified grid tie connection to grid for surplus production.
GE PGT10 Documentation
Posted by MTIMA on 2 February, 2019 - 9:18 am
GE PGT10 Gas turbine Manual
Quality Differences of Instrumentation Cable
Posted by mburtis on 1 February, 2019 - 10:52 pm
Which brand of instrumentation cable is best
Floboss 600+ Modbus Fail
Posted by Islam on 1 February, 2019 - 1:15 pm
Modbus RS485 Communication Problem With Micro-motion 2700 Flow-meter Transmitter
Wonderware Subtraction Error
Posted by ballcap on 1 February, 2019 - 11:23 am
Script written to do simple subtraction and the resulting difference is incorrect
Turbine Blades Wrong Installation Issue Created by OEM
Posted by Maq on 1 February, 2019 - 10:01 am
OEM service provider installed the turbine blades considering moment weight list as sequence chart. Result huge imbalance and machine was reopened.
DC Motor
Posted by easydc on 1 February, 2019 - 8:50 am
What can cause DC motor current to remain low below low limit set point? Low limit set point is 30 amps.
Experion Field Device Manager Device Tag
Posted by mpazouki on 1 February, 2019 - 8:46 am
What happens when HART device tag and Honeywell Experion FDM tag have not been registered the same?
ST Dual Combined CV1, 2 and MSV1 and 2 Sudden Closure without Trip
Posted by Kolluri on 1 February, 2019 - 3:40 am
322 MW STG unit tripped because of sudden closure of dual MSV & CV lines
Method for Obtaining Totalised Flow from the Pulse Output of a Flowmeter
Posted by Tofunmi on 1 February, 2019 - 3:20 am
How to obtain totalised flow from the pulse output of a flowmeter without using PLC?
Posted by harshbhav on 1 February, 2019 - 2:08 am
Can we map same register address to multiple devices connected to the server in MODBUS TCP/IP
Modbus TCP - Dup Ack/FCS/Retransmit
Posted by euscada on 31 January, 2019 - 12:34 pm
Switch upgrade causing MB/TCP network issues
Controlling a Flow Transmitter using PLC
Posted by nyame on 31 January, 2019 - 12:02 pm
Determining flow quantity going to my tank using a flow transmitter and PLC, Allen Bradley and RSLogix 500
Validating MBAP Header on Client Response
Posted by Sarika on 31 January, 2019 - 6:11 am
Handling invalid responses received by client for Modbus TCP MBAP header when client receives a invalid protocol ID or invalid PDU length.
ESP MODBUS Addressing
Posted by methaq on 30 January, 2019 - 4:29 pm
Need ESP266 memory registry address that necessary for read and write words and bits from PLC
Migration from MARKV to MARKVie
Posted by Amine on 30 January, 2019 - 4:03 pm
Communication between markvie and CS3000 Yokogawa by GSM version 3 side GE and version2 side Yokogawa
Alspa P80 Software
Posted by ginjaninja72 on 30 January, 2019 - 11:46 am
looking for software