Today is...
Friday, May 27, 2016
Welcome to Control.com, the global online
community of automation professionals.
Featured Video...
Featured Video
A demonstration of EtherCAT control of linear motors using the CTC EtherCAT master.
Our Advertisers
Help keep our servers running...
Patronize our advertisers!
Visit our Post Archive
Forum Archive
7
replies
RS-485 / fiber optic converters
Posted by Bill Townsley on 17 October, 2001 - 11:09 am
I am looking for a line modem (converter) to convert a RS-485 signal from copper to fiber optic...
32
replies
parallel port interfacing using vb 6
Posted by Eoh Thean Keat on 17 October, 2001 - 11:02 am
parallel port interfacing using VB 6
Autonomic Computing
Posted by Kenneth Hunt on 17 October, 2001 - 10:11 am
I found this interesting: Why autonomic computing will reshape IT by Paul Horn
9
replies
Derivative term in temperature loops
Posted by Pat Levinson on 17 October, 2001 - 9:10 am
Why is the derivative term do important for temperature control?
6
replies
Genius I/O card for Solenoids
Posted by Ricardo Ribeiro on 17 October, 2001 - 9:09 am
We are just about to replace an old control system and we would like to use GE Genius I/O cards for driving solenoid valves...
5
replies
Software for Cegelec Gem 80
Posted by Ronald Kiens on 17 October, 2001 - 8:59 am
Is there somebody who can help me out with a software package with download cable and programming book for a Cegelec PLC tyP GEM80 I need this for a project on a ship.
8
replies
HMI/PLC Comm over leased line
Posted by Don Zunti on 16 October, 2001 - 1:03 pm
Information required for connecting an HMI to a PLC over leased line modem
3
replies
Communication facilities in Distributed Control Systems
Posted by Diwakar on 16 October, 2001 - 8:46 am
Kindly explain about the various communication facilities that pertain to Distributed control systems.
3
replies
PID Control loops & tuning
Posted by dk24991 on 16 October, 2001 - 8:45 am
Looking for info on programming a pid loop?
1
reply
hardness or conductivity-which to measure
Posted by Brian on 15 October, 2001 - 4:45 pm
how do these two items relate. are they basically the same thing but measured with different values. is there a ratio from one value to the other?
3
replies
Modbus addressing?
Posted by Mario de Sousa on 15 October, 2001 - 1:21 pm
I am currently working on getting the modbus module back up, but need some help.
10
replies
PL7-2 TSX17-20
Posted by Kostadinov Nikola on 15 October, 2001 - 12:11 pm
Telemecanique TSX17-20 PLC and PL7-2 language.
3
replies
Launching Internet Explorer from Wonderware
Posted by Chris on 15 October, 2001 - 12:08 pm
I would like to pop a window up and have it display a website.
6
replies
Looking for IO card for thermistors
Posted by Andrew Chiang on 15 October, 2001 - 11:22 am
We are using 10K and 30K ohm thermistor. Are there any IO cards in the market that can use 30K ohm and 10K ohm thermistor?
10
replies
Power Supplies
Posted by Mike on 15 October, 2001 - 10:35 am
Is a separate 24V supply needed for 4-20mA or Analog PLC cards??
3
replies
Running a Macro directly from the desktop
Posted by mihirr on 15 October, 2001 - 10:20 am
I have written a Macro in Excel spreadsheet to automate a task. I want this macro to actuate the moment I open the Excel file.
3
replies
Siemens TOP Connect
Posted by Michael Griffin on 15 October, 2001 - 10:06 am
Has anyone used the Siemens TOP Connect wiring system for the S7-300 PLCs? I am interested in how quick and easy it actually is to install, how reliable it is in service, and any other relavent issues. ...
5
replies
Looking for inexpensive controller
Posted by Todd on 14 October, 2001 - 1:52 pm
I'm looking for an inexpensive and small controller with 1 analog output and 1 digital output, that interfaces serially to a PC.
PLC development under Mac OS X
Posted by luigi on 14 October, 2001 - 11:50 am
May anyone suggest a PLC development program that can be ported to Mac OS X?
4
replies
Speed Control
Posted by minecrash on 14 October, 2001 - 9:35 am
anyone have any suggestions on controlling the speed of a motor run using an H-bridge and powered by a 9-volt supply?
1
reply
A Profibus data module term
Posted by Joe O on 14 October, 2001 - 8:47 am
What is the difference between "consistent" and "non-consistent" data modules?
12
replies
Integrators versus Large Companies
Posted by Ranjan Acharya on 14 October, 2001 - 8:37 am
I am interested in facts / opinions that compare integrators with the big guys (pricing, value for money, quality of work, support, ... and everything else) -- both points of view are of interest ...
3
replies
M-Bus to PC using VB
Posted by Offer Dahan on 13 October, 2001 - 11:28 am
I have a siemens network of energy meters connected by M-Bus network, I would like to get Information from that network using PC, I know there is a convertor for DH485 or even RS232, for that system, but yet I need a protocol that can address those devices over the M-Bus...
4
replies
Embedded PC based controls
Posted by Pierre Desrochers on 13 October, 2001 - 11:27 am
Can someone supply me with alternative supplyers?
5
replies
AB DF1 and VB
Posted by Offer Dahan on 12 October, 2001 - 7:28 pm
communicate with Allen Bradley SLC with VB
2
replies
Serial communication using visual c++
Posted by Ghanshyam patel on 12 October, 2001 - 7:04 pm
i need help for temperature control program. in this program i catch the temp from temp. instrument and i use this temp reading in my program.
Linear Displacement
Posted by Ricardo Ribeiro on 12 October, 2001 - 6:10 pm
Looking for a linear displacement transducer for a range of 0 to 2,5 milimiters ... small, inductive type, SSI interface output preferable, reliable under severe wet and vibration conditions. ...
JimPinto.com eNews 5 Oct. 01
Posted by Jim Pinto on 12 October, 2001 - 4:34 pm
JimPinto.com eNews No. 63 - October 5, 2001 is on the web: http://www.jimpinto.com/enews/oct5-2001.html
8
replies
problem in plc with data loss
Posted by Devesh Yadav on 12 October, 2001 - 12:32 pm
loss of data at HMI during operation for few seconds. and its not always. what could be the reason for that?
1
reply
XP and Tests, tests, tests (WAS: Tests, tests, tests)
Posted by Jeff Dean on 12 October, 2001 - 12:22 pm
Peter said: >>I must admit, I'm curently affascinated by XP programming (not M$, but the programming paradigm). ... << I was quite excited when I read the initial reviews of books about eXtreme Programming. ...
3
replies
Position Measurement +/- .01" over 40 feet
Posted by Todd Welsh on 12 October, 2001 - 9:53 am
Any suggestions for a linear positioning system accurate to .01" over 40 feet. Prefer non-contact, i.e. laser, but will settle for linear encoder or equal.
2
replies
Fieldbus cable interference
Posted by Nathan Williams on 11 October, 2001 - 7:13 pm
Will digital signals interfere with Fieldbus signals?
3
replies
Excel Security
Posted by George Robertson on 11 October, 2001 - 7:12 pm
Anyone got any bright ideas on how to make an excel spreadsheet that can only be run from a particular PC?
1
reply
LOTAM-I-01 compliance statement
Posted by Onno Moret on 11 October, 2001 - 3:52 pm
Does anyone know what this means: "LOTAM-I-01 compliance statement". It is related to Fieldbus Foundation, but they do not know what it means.
3
replies
Re: Germany and Linux control
Posted by Jiri Baum on 11 October, 2001 - 3:21 pm
You and I might be able to read English reasonably, but most people can't. That's why i18n is so important - because most people *can't* read English to any useful degree...
15
replies
Step-7 programming
Posted by Aqui on 11 October, 2001 - 3:11 pm
Problems with s7 (v5.x) and standard scalling Function block...
1
reply
RS-485 Convertor
Posted by John Koro on 11 October, 2001 - 3:00 pm
Class 1 Div 2 RS-232 to RS-485 Convertor
8
replies
How to build a PLC
Posted by Claudio Pires on 11 October, 2001 - 2:57 pm
I would like to know what are the basic steps and concepts concerning the design of a programmable logic controller...
2
replies
wincc deployment
Posted by kamesh on 11 October, 2001 - 2:49 pm
wincc hmi deployment to the client system
DIN EN ISO 9001 Standards
Posted by Uma maheshwara on 11 October, 2001 - 2:41 pm
Electrical design symboles for DIN EN ISO 9001 Standards
8
replies
Verification of flowmeter for Custody Transfer for Gases
Posted by Michael Schuker on 11 October, 2001 - 2:40 pm
We would like to use a Coriolis mass flowmeter to measure CO2. How to prove that the flowmeter is reading correctly?
2
replies
Connecting Palm Pilot to A-B Micrologix PLC
Posted by Mark Chaplin on 11 October, 2001 - 2:31 pm
I was wondering if anyone has tried that PocketHMI software that lets you connect a Palm as an HMI to a Micrologix PLC
3
replies
what ic can i use
Posted by chenqu on 11 October, 2001 - 2:20 pm
I am going to design a servo motor control circuit. I know an IC:M51660L can be good to my program. But I cann't find it nearby.
6
replies
ModBus to DeviceNet - Protocol Converter.
Posted by Eng. Juan Gomez on 10 October, 2001 - 6:01 pm
ModBus to DeviceNet - Protocol Converter DEVICE.
9
replies
Dual Line E-Stop Circuit
Posted by Mohan Smith on 10 October, 2001 - 6:00 pm
I have two cable Winders that will be takeing up cable from two different production lines one at atime. What can I do for the E-Stop circuit?
5
replies
Redundant Ethernet Implementation
Posted by Paul Jager on 10 October, 2001 - 5:38 pm
We are investigating implementation of a fully redundant Ethernet with TCP/IP for Linux and NT using automationX...
One sensor for temperature and smoke detection
Posted by Armando on 10 October, 2001 - 4:45 pm
I am looking for a single sensor that will monitor temperature and smoke detection...
20
replies
[MAT-devel] Re: RTOSes, PLCs and control
Posted by Peter Wurmsdobler on 10 October, 2001 - 4:05 pm
Once such a protocoll is established, all suppliers, system integrators or other control entities can use it, suggest add-ons, etc. It would be open...
5
replies
PID Control
Posted by jmorgan on 10 October, 2001 - 3:32 pm
PID Control Loop for Make Up Air Unit
Flow Charts from C/C++ source code?
Posted by Kris Ray on 10 October, 2001 - 2:54 pm
Does anyone know what a good software tool that reads in C/C++ source code and creates a Flow Chart that shows the codes logic?
3
replies
mud level measurement
Posted by Ravindra on 10 October, 2001 - 10:36 am
Have you tried measurement of the mud level in the sugar factory clarifiers?
5
replies
Analogue to Gray Code converter
Posted by David Copley on 10 October, 2001 - 10:21 am
Does anybody know of a commercially available analogue signal e.g 0 to 5V or 4-20ma, to gray code converter?
Specification of LSV2 protocol
Posted by Patrice Virissel on 10 October, 2001 - 9:31 am
I'm looking for the specification of the LSV2 protocol. The aim is to establish a dialog between an "InTouch" application (on a PC running a MS Windows OS) and a CNC machine supporting this protocol (over a serial link). ...
14
replies
HMI standard regarding symbol color
Posted by Xander on 9 October, 2001 - 3:32 pm
A few months ago I posted a message about HMI symbol colors. I'm at this moment busy developing a standard for our company and want to ask you to react again.
1
reply
Need IEC ampacity tables
Posted by T. Connolly on 9 October, 2001 - 2:25 pm
I need an IEC ampacity table
3
replies
Industrial label printer onProfibus
Posted by tsuv on 9 October, 2001 - 1:52 pm
Does anyone know of a industrial label (barcode) printer that can operate on the Profibus ?
7
replies
hmi plc communication
Posted by kamesh on 9 October, 2001 - 1:48 pm
two independent hmi aceessing the information from a single source plc
10
replies
[German] Germany and Linux control
Posted by Jiri Baum on 9 October, 2001 - 1:47 pm
English to German (T_Mail): Curt (über Deutschland) > scheint es, eine Menge entwicklung Linux geben Steuer, diean in tha geht > Teil der Welt. Das führt zu die Frage... sollte wir versuchen, unsere Liste mehrsprachig zu bilden?
4
replies
Germany and Linux control
Posted by Jiri Baum on 9 October, 2001 - 1:25 pm
Should we try to make our list multi-lingual?
6
replies
What is OPC Data Acces 2.0
Posted by Maya on 9 October, 2001 - 1:17 pm
What is OPC data Access 2.0.
3
replies
Labview datasocket & OPC servers
Posted by Richard Bland on 9 October, 2001 - 1:03 pm
Using Kepware Kepserver, siemens S7 plc and Labview 6i. Lots of slowdown when using multiple datasocket writes in same while loop...
1
reply
Linux - Ethernet - ControlLogix
Posted by jwrobert on 9 October, 2001 - 12:58 pm
I am looking into plc communication on a Linux platform via Ethernet to an Allen Bradley ControlLogix PLC...
SLC 500 and ControlLogix text
Posted by Jim May on 9 October, 2001 - 12:48 pm
Here is Programmable Controllers Using Allen-BradleySLC 500 and COntrolLogix...
Central Arizona ISA Scholarship Program
Posted by Philip Glass on 9 October, 2001 - 12:46 pm
Just thought I'd drop a note and let everyone know about a scholarship program that my local section of ISA here in Arizona is providing for our future engineers...
1
reply
Profibus-DP Comm. between AB 1734 Point IO and Delta-V
Posted by Irem on 9 October, 2001 - 12:38 pm
I have a problem in comm. with AB Point IO modules with Delta-V through Profibus DP
10
replies
Re: RTOSes, PLCs and control
Posted by Curt Wuollet on 9 October, 2001 - 12:14 pm
Why would anybody who cares enough to write Open Source code on Linux want to depend on MS proprietary protocols and having a Windows box in the mix?
3
replies
LSV2 protocol
Posted by Patrice Virissel on 9 October, 2001 - 11:55 am
Implementing LSV2 protocol in VC++
9
replies
Saunders Valve info
Posted by THONG PHAT on 9 October, 2001 - 11:52 am
I would like to contact Saunders Valve Company Limited for some spare parts...
14
replies
GE 90-30 Programming Cable
Posted by Nate Hemming on 9 October, 2001 - 11:44 am
I need to make a cable to connect a good 'ol PC to a 90-30 PLC....anything I should be concerned with?
7
replies
PID design xith 1 operationnal amplifier
Posted by S. R. on 9 October, 2001 - 11:31 am
Help me to design a PID with only 1 operationnal amplifier
2
replies
Delphi-created ActiveX controls in WinCC
Posted by wayneh on 9 October, 2001 - 11:14 am
WinCC doesn't get along too well with ActiveX controls created in Delphi 5 because of the 'Sender:' parameter...
16
replies
New
Posted by Peter Wurmsdobler on 9 October, 2001 - 11:11 am
I would be happy to participate in your project in an area where I can. On the other hand, I would really like to understand the concept more, in more detail and the implications of real time constraints ....
1
reply
dc servo driver
Posted by microsys_man on 9 October, 2001 - 10:44 am
I was trying to control a robot for a university project.I was thinking that the robot is working properly and I will only design controller with microcontroller.But when I began I see that the drivers are out of order....
3
replies
DDE and iFIX
Posted by Connie_fox on 9 October, 2001 - 10:40 am
I met problem reading data from a DDE server application in iFIX.
1
reply
Profibus DP Comms To Altivar 58 VSD
Posted by Peter Hasler on 9 October, 2001 - 10:28 am
Can anybody provide me with information regarding the structure of the data map of the above slave.
6
replies
PLC5 to Modbus TCP over Ethernet
Posted by Yves on 9 October, 2001 - 10:26 am
I need to exchange points between a PLC5 and another system over Modbus TCP...
6
replies
automake support
Posted by hopfgartner on 7 October, 2001 - 12:43 pm
as you probably know, I´m trying to implement a autoconf/automake build environment for Linuxplc...
2
replies
Tests, tests, tests
Posted by hopfgartner on 7 October, 2001 - 12:38 pm
looking through the files in the LinuxPLC source tree I noted that very few attention is put to tests...
4
replies
Industrial communication protocols
Posted by gggggg on 7 October, 2001 - 12:36 pm
I' trying to set up a student project about the existing communication protocols in Industry.. Apart from CAN and Ethernet (is there any Ethernet specification for industrial use?)
2
replies
how to send data from pc to rt-100 robot motor controller board
Posted by balu on 7 October, 2001 - 12:21 pm
anybody please explain how to communicate b/w pc to robot. i need to write a user interface programm using VB.
17
replies
Siemens Step5
Posted by Gastao Rodrigues Paiva on 7 October, 2001 - 12:18 pm
I need a solution to run a Step 5, version 6.3 (Dos version) in my computer with Windows 98 OS.
comparison of dcs
Posted by mihirr on 7 October, 2001 - 12:16 pm
please help me to compare HONEYWELL TPS DCS WITH YOKOGAWA CENTUM CS-2 DCS...
6
replies
Measuring downtime in liquid batching
Posted by Mal Steel on 7 October, 2001 - 12:10 pm
We have a process of 4 liquid brewing vessels in series,(Brewery) and are interested to measure downtime and resons for falling behind production schedules...
10
replies
passwords and security (was: Windows NT and System Clock Accuracy)
Posted by Jiri Baum on 6 October, 2001 - 12:46 pm
Fortunately, these days systems can be configured to use better (or worse) authentication methods than that...
2
replies
ABB Conductor NT
Posted by Ravindra on 6 October, 2001 - 12:33 pm
can any body help me how to fix the crash of the ABB Conductor NT ver 4.0 primary server and redundant server?
4
replies
Sulphur Dioxide flow meter
Posted by Ravindra on 6 October, 2001 - 12:32 pm
i want to know how to measure the flow of thr sulphur dioxide gas with instruments.
2
replies
PLC Emulation Software
Posted by petec on 6 October, 2001 - 12:28 pm
Does anyone know of a software emulator for the Allen Bradley ControlLogix5550 PLC
2
replies
Noise Level of Safety Valve
Posted by Kibong Moon on 6 October, 2001 - 12:27 pm
Is there any regulation/standard/code which define the noise level limitation of safety valves?
3
replies
Driver of DH+ for LabVIEW
Posted by Vivanco Fernando on 6 October, 2001 - 12:25 pm
Bradley in network DH+ for LabVIEW?
JimPinto.com eNews - Sept. 28 2001
Posted by Jim Pinto on 5 October, 2001 - 3:10 pm
The September 28, 2001 JimPinto.com eNews is on the web at : http://www.jimpinto.com/enews/sep28-2001.html
3
replies
AB SLC5/05 with RIO scanner
Posted by Michael R. Batchelor on 5 October, 2001 - 2:56 pm
Can anyone tell me if there is some special "trick" to get a SLC5/05 with a 1747-SN RIO scanner module to talk to a 1794-ASB module that has a couple of Flex I/O modules on it? ...
2
replies
Extruder PLC control
Posted by Pat Levinson on 5 October, 2001 - 2:53 pm
Concerned about non-isolated thermocouple modules in a plastic pipe extruder.
1
reply
OIL FLOW METER
Posted by S C R on 5 October, 2001 - 2:24 pm
Looking for oil flow meter.
3
replies
ISA S84.01 SIL Study
Posted by Waddell, Reginald E on 5 October, 2001 - 2:06 pm
We are considering doing a SIL study on two of our chemical manufacturing units. Does anyone know of a reputable consultant that would be able to facilitate such a study?
6
replies
VB code that talks to SLCs (was: logging data from micrologix 1500 to SQL)
Posted by Gary Weage on 5 October, 2001 - 1:24 pm
I would sure like a copy (or a variety) of some VB code that talks to SLC's...using DF1 would be fine. I may not ever "need" it, but would like to know more about it. Anyone legally able to send me some?
4
replies
System Definitions
Posted by Richard George on 5 October, 2001 - 11:28 am
Can anyone please tell me what the difference is between a Distributed Control System and a SCADA system in terms of basic architecture and connection of field instrumentation and equipment. I have a client who is making me question my previous understanding (and sanity!)
1
reply
Ref Modbus Device / PC comm.
Posted by Mário Roberto Domenici on 5 October, 2001 - 11:18 am
I'm trying to develop comm. between Modbus Device and PC(Windows/Delphi platform). Is there anybody who has a Delphi Unit Modbus or a Delphi font example?
4
replies
Sand percentage in water
Posted by Fernando Gutierrez on 5 October, 2001 - 11:17 am
measuring percentage of sand in water
4
replies
Twelve sites and 1 mainstation
Posted by Calvin on 5 October, 2001 - 10:20 am
Communication between 12 sites and 1 mainstation.
1
reply
Interference
Posted by Gianni Franchi on 5 October, 2001 - 9:32 am
Anyone know how to filter or eliminate the interference generated by neon lamp ? ...