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Forum Archive
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Structured Text Sample Function Blocks
Posted by Chartwell on 3 April, 2001 - 11:21 am
I am compiling a public library of Structured text Function Blocks. Please send me your best ones.
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communication vb to melsec A1s cpu
Posted by hassan on 30 March, 2001 - 12:18 pm
communication vb to melsec A1s cpu
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E-Bay for surplus control equipment?
Posted by Paul Siebers on 30 March, 2001 - 11:59 am
Can anybody recommend a site where I can offer my surplus equipment for sale?
JimPinto.com eNews 28 March 2001
Posted by Jim Pinto on 30 March, 2001 - 11:22 am
The latest JimPinto.com eNews No. 38 - March 28, 2001 is on the web at : http://www.jimpinto.com/enews/mar28-2001.html ...
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siemens s5 fb segments operations
Posted by heather on 30 March, 2001 - 11:03 am
segment1 JU=m1....a bunch of operations...m1...segment 2..
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Position and feedforward
Posted by Vikas Meshram on 30 March, 2001 - 10:22 am
A few question about position control. ...
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GSM MODEM COMMUNICATION
Posted by Sipos_Jozsef on 30 March, 2001 - 10:01 am
Is there anybody who has experience in communication with AB SLC500 or SIEMENS S7-300 via GSM modem on the processor side and analog modem on the caller side. If is, I would like to know how to set the units and the communication. ...
4
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Proximity switches for high temperature.
Posted by Jury Efremov on 30 March, 2001 - 7:49 am
I need proximity switch for work in high temperature - about 900C. Can anyone help me? Thanks.
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lplc article and figures.
Posted by Mario de Sousa on 30 March, 2001 - 6:17 am
I have placed the latest version of the lplc article in the /doc directory.
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FastLink 6.5 for Win NT Drops Connection on last day of Daylight Saving Time
Posted by Yah on 30 March, 2001 - 4:10 am
FastLink 6.5 for Win NT Drops Connection on last day of Daylight Saving Time
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Modbus Arbitrator
Posted by Kurt Raymond on 29 March, 2001 - 4:51 pm
Has anyone heard of a "modbus arbitrator" ? It is supposedly a device that allows two modbus masters to access multiple modbus slaves .
3
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Communications between RSView and ControlLogix via OPC
Posted by Cristina Barreto Lopez on 29 March, 2001 - 2:56 pm
Problems with the communications between RSView and ControlLogix
3
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Serial port communication in Windows CE on Pocket PC
Posted by arvind on 29 March, 2001 - 2:36 pm
Can Anybody tell me where I can find a program to read and write from a serial port through PDA.
6
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PLC2 to RS-232
Posted by Lynn Linse on 29 March, 2001 - 10:55 am
I have a customer with over 50 old PLC2 they want to access by RS-232 serial. None have a 1771-KG card - which look pretty much like overkill at $1500 each ... Has anyone seen any alternative solutions?
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CSV file creation in RSView
Posted by Jeffrey D. Brandt on 29 March, 2001 - 10:53 am
Is is possible, without jumping though hoops and buying special add-ons, to use RSView32 to create a single line comma separated value file, like: ABC123,23.012,1.222,X,0,122 ....
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GPL Artwork ?? (was: DIO48 Translator)
Posted by Jiri Baum on 29 March, 2001 - 5:13 am
> Can you GPL artwork??!!?? I can't see why not, particularly since it's functional artwork, but then again I'm not a lawyer. ...
documentation (was: Re: developer questions)
Posted by Jiri Baum on 29 March, 2001 - 4:33 am
> I have had to read the great article by the programming guys to know > what's going on. Oops, I guess that's our fault for not keeping up with the documentation. ...
Tcl extension in CVS
Posted by Greg Goodman on 28 March, 2001 - 5:48 pm
The CVS tree for PuffinPLC now contains a lang/tcl directory with the source code and build environment for a dynamically loadable Tcl extension that implements a new Tcl command for interacting with the LPLC. ...
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Adding X terminal to Siemens PCS HMI
Posted by Adam on 28 March, 2001 - 5:02 pm
How does one go about adding a X terminal to a Siemens PCS operator interface system?
10
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Fuses for 24V DC circuits
Posted by Chimalkar, Sumeet on 28 March, 2001 - 1:51 pm
Does anybody have any idea if a fuse rated for 230V ac, 2A can be used in a circuit using 24V dc and still blow at the same fault level?
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RS485 network with remote nodes
Posted by Alex Benim on 28 March, 2001 - 11:34 am
Does anyone have experience in low cost solutions for connecting multiple PLCs in RS485 network with consecutive gaps between the nodes exceeding EIA485 specification's 4000 ft for both star and token ring-like networks. Fiber is not an option.
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HART additional display
Posted by Toni Kaesbeck on 28 March, 2001 - 11:13 am
I am looking for a display unit, to be mounted outside (e.g. IP67), that can be put on an existing HART line and display the primary value, read by a HART master. This should be only in a kind of "listen mode". Configurable engineering units would be a plus. ...
2
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DIO48 Translator
Posted by Curt Wuollet on 27 March, 2001 - 10:46 pm
Artwork is done and mostly checked. It goes off to fab in the morning. Is anybody really interested in building this in the near future? I'll put it up if there is interest. Otherwise I'll wait till I get a BOM and notes done. ...
3
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Building an scheduling engine
Posted by Chance Elliott on 27 March, 2001 - 6:49 pm
Are there any books or other resources about building an scheduling engine?
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Java and robotics control
Posted by Chance Elliott on 27 March, 2001 - 6:43 pm
Are there any resources relating to the use of Java in controlling Robotics via Serial, SCSI, DDE communication?
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developer questions
Posted by Greg Goodman on 27 March, 2001 - 4:52 pm
To whom does one apply for a cvs login? Alternatively, to whom might one submit contributed code? I've written a loadable Tcl extension for interacting with the LPLC, along with a couple of scripts (including a Tk interface to the chaser demo). ...
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PC printer port interrupt
Posted by manmohan singh on 27 March, 2001 - 4:33 pm
I am using parallel port of the computer to acquire the data from the analog to digital converter. I want to make it interrupt driven but I don't know how to steal the interrupt for the ports. ...
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Looking for single board controller
Posted by Bob on 27 March, 2001 - 4:31 pm
Looking for single board controller ...
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Technology in Manufacturing Was INFO: Technology Stocks
Posted by Bill Sturm on 27 March, 2001 - 3:16 pm
>You in the automation industry have rushed and strived to participate in the "dumbing down" of your profession. ....<clip> < Right on, Curt. I wonder what the solution is...
Communication Plantscape - AB Micrologix 1200
Posted by Andres F. Valderrama on 27 March, 2001 - 3:03 pm
Communication with an Allen Bradley Micrologix 1200 via Plantscape SCADA using RSLinx DF1 Polling Master Driver.
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Cimplicity - Ge-Fanuc e-mail list
Posted by Eudilson_Nunez_Cossio on 27 March, 2001 - 2:34 pm
Does anyone know an e-mail list for Cimplicity Ge-Fanuc topics?
9
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PLC selection
Posted by Charlie Waddell on 27 March, 2001 - 10:23 am
I work for a company that manufactures HVAC equipment. I have an inside application for a filling station that will require the use of a PLC. ...
2
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AI 500 and Windows 2000
Posted by Ron Smith on 27 March, 2001 - 7:31 am
Why can't I run AI500 under Windows 2000?
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Communication Wizcon 7 & Digitric-P
Posted by Peter Vanhemel on 26 March, 2001 - 5:13 pm
communication wizcon digitric P
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AB PLC to PC (serial) communication
Posted by umi1 on 26 March, 2001 - 4:36 pm
I have been tasked with developing communications package to send or receive the data from PLC SLC5/03 and PC (Application VB 5.0) and visa versa for Ware House Management system, How can i communicate the data through RS232 serial communication.
Need for DDE like Protocols
Posted by Anand on 26 March, 2001 - 2:12 pm
Even when people start using LinuxPLC they willl want to interact with their old PLC's and other devices. A DDE like communication is required. ...
JimPinto.com eNews 3-18-01
Posted by Jim Pinto on 26 March, 2001 - 1:25 pm
The latest issue of JimPinto.com eNews - No. 37 - March 18, 2001 is on the web at : http://www.jimpinto.com/enews/mar18-2001.html
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Getting Involved
Posted by Phillip Mastroianni on 26 March, 2001 - 12:05 pm
I want to participate in the LinuxPLC group, if there is anything that I can help someone with, please let me know. ...
ModbusPlus Analysis
Posted by Ruslan on 26 March, 2001 - 10:03 am
ModbusPlus Analysis
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Some Problem about Cimplicity CimBasic
Posted by Zuo Zhihui on 26 March, 2001 - 8:22 am
Problem about CimBasic Script get link to OLE Object
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Surface Energy of Liquids and Liquid Metals
Posted by M.H. Ghatee on 26 March, 2001 - 4:11 am
We have derived an equation related to the surface energy over the whole liquid range. This removes the singularity of surface tension and surface energy at the critical temperature perfectly. Also application of first and second law is now parameterized by the critical exponent.
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Binary I/O Library
Posted by Todd Lyons on 26 March, 2001 - 1:00 am
Would this be any use (mostly for its GPL status and intentions of portability)?
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Motor Control Debate how to use PID
Posted by Kipton Moravec on 26 March, 2001 - 12:37 am
Do you use the previous value when setting the motor voltage or not?
DIO 48 Industrial IO wal proprietary hardware path
Posted by Curt Wuollet on 25 March, 2001 - 11:35 am
I forgot to explain why I switched from 32 in 16 out to an even split.
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Sy/Max Line Programmer Software
Posted by Greg King on 25 March, 2001 - 9:27 am
I'm having trouble finding out how to print Symax programs to a disk file with the line programmer software. Can anyone help me out?
cp-523 and pc
Posted by e.pil on 25 March, 2001 - 7:37 am
cp523 link pc
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Is LinuxPLC heading down the "proprietry" hardware path?
Posted by Campbell, David (Ex AS17) on 23 March, 2001 - 10:14 pm
There has been much discussion on this lately about hardware & IO interface boards.
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Bridging a bunch of DH-485 Micro's onto DH+
Posted by John Kelley on 23 March, 2001 - 7:14 pm
Need info on bridging some micro 1200's via AIC+ into a existing DH+ Net
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class R fuses
Posted by Anthony Kerstens on 23 March, 2001 - 5:24 pm
Customer specifies R class fuse; what are advantages over J class? ...
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Variation in voltage and frequency
Posted by Colvin, Chuck on 23 March, 2001 - 5:16 pm
The utilization voltage here in the US is 460v 60Hz. On Brazil the Voltage is 440v 60Hz (please correct me if I am wrong). I know the importance of keeping the frequency as specified because of heat build up. I was told by some one who works for Baldor that you can operate an AC motor below name plate rating if you derate the Hp. ...
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SLC Immediate Output
Posted by Anthony Kerstens on 23 March, 2001 - 5:10 pm
I have a 5/04 with and SN and Flex I/O Outputs. Are there any problems with using the IOM instruction with Flex I/O? ...
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Flow Charts vs. RLL vs. State, yada-yada-yada
Posted by David Hermann on 23 March, 2001 - 3:45 pm
Experiences with RLL-Plus?
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Personal experiences with different Control Systems.
Posted by ECG, Ana Maria Batista de Zayas on 23 March, 2001 - 3:44 pm
I need to have some opinions of people who have worked with the different process control systems like: DeltaV, Centum de Yokogawa, Smar, Freelance. ...
Devices using Modbus TCPIP
Posted by Michael Sing on 23 March, 2001 - 3:29 pm
I am looking at implementing Modbus TCPIP and am interested in how many devices (sensors, transmitters, drives, motor protection relays, etc) implement this network and protocol. Can anyone provide details on this.
3
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DC power supply choice
Posted by KG on 23 March, 2001 - 3:26 pm
Trying to calculate current requirements of a DC power supply using 10 4-20MA loop devices.
3
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File transfer, RSLogix to A.I.
Posted by Jack Dennon on 23 March, 2001 - 1:27 pm
How do you save a "project" on RSLogix such that it can be used by A.I. (DOS) software?
5
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Loop controller
Posted by controlcom1 on 23 March, 2001 - 12:26 pm
Temp control and Plant Monitoring
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Would like to help
Posted by Bob Page on 23 March, 2001 - 12:01 pm
Would like to help. ... Can you suggest a task that needs to be done to further the cause.
Converter
Posted by Nelu on 23 March, 2001 - 10:57 am
Data transmission schematic needed...
4
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LED Display Search
Posted by Matt L Myers on 23 March, 2001 - 10:41 am
Has anyone come across a 6-Digit LED display with strobed (multiplexed) BCD or Hex inputs?? I was hoping for around a 1" digit.
17
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Fast and easy way to a LPLC Ethernet Remote IO Rack
Posted by Curt Wuollet on 23 March, 2001 - 10:19 am
I was following a PR article on Linux Today for Zflinux systems and found something very interesting. It is a complete design for a Linux Internet Appliance with Orcads, Gerbers, and the whole nine yards. ...
Foundation Fieldbus weight scale transmitter
Posted by Steven Landau on 23 March, 2001 - 9:22 am
Anybody ever seen a FF weight scale transmitter?
4
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Cable Fault Locator
Posted by Bob on 23 March, 2001 - 8:10 am
Looking for accurate device, to pinpoint resistive faults within power cable.
21
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Is RealTime Database Possible??
Posted by Girish Patel on 23 March, 2001 - 6:34 am
I am developing an application for process automation. In this data is logged in the Relational Database. The Data Logging frequency is high.
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siemens s7 db concept
Posted by thomas sprinzing on 23 March, 2001 - 6:14 am
can s7 dbs contail NIL values in some number fields?
4
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Modbus RTU
Posted by David Keeffe on 23 March, 2001 - 2:27 am
As part of an ongoing contract, I patched the Linux 2.0.x and 2.2.x serial drivers to support Modbus RTU receipt framing. Is there interest in this patch?
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De-Mystifying Protocols
Posted by Shantanu Apte on 22 March, 2001 - 11:52 pm
There are so many protocols.
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Radio Communication Between master and slave
Posted by Talal Kayyali on 22 March, 2001 - 6:10 pm
Radio communication between S7-300 & S7-200
24
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Integration strategy
Posted by Michael Brown on 22 March, 2001 - 3:11 pm
In planning the future direction of my integration business, is it better to be diverse or specific? ....
Freeware Modbus ActiveX/DLL tool moved
Posted by Lynn Linse on 22 March, 2001 - 2:52 pm
Just as a general update, the "mbserver" formerly at www.tripod.com has moved to http://mbserver.w3.to/. ...
1000BaseX Networking
Posted by Frankie Chan on 22 March, 2001 - 12:42 pm
Is it possible to use 1000Base-Sx or LX networking equipment, say switches, hub, repeater with 9/125um single mode fiber. Will the attenuation very high?
8
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Wago IO, Ethernet, Modbus/tcp
Posted by Richard, Jean-Marie on 22 March, 2001 - 12:05 pm
Did anyone make an application with Wago IO system Ethernet/tcpip or modbus/tcp with LINUX ?
2
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Unsolicited Read
Posted by Ruslan on 22 March, 2001 - 11:26 am
Is it really possible to transfer data from PLC to host computer via ModiconModbusPlus?
9
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OPC Protocol analyser
Posted by Peter Whalley on 22 March, 2001 - 10:57 am
Is anyone aware of a product which acts like a an OPC protocol analyser. That is it monitors OPC traffic and provides logs of all transactions. It would preferably need to work even when OPC was used for interprocess communications within a single PC.
3
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Is Profibus DP a real RS-485 ?
Posted by claudio on 22 March, 2001 - 10:28 am
To connect RS485-Fiber-RS485 I usually use a normal RS485 to FiberOtics converter in both side. In the case of Profibus DP can I use a standard RS485 to Fiber converter ? ...
NT4.0 Wrksta networking connection speed
Posted by Ian O'Brien on 22 March, 2001 - 10:18 am
Using a 3COM PCMCIA 10BT network card on a NEC LX laptop. When the network connection is re-established the networking protocols are taking greater than 40 seconds to start operating properly. Is there a registry setting or windows setting to decrease the amount of time NT tries to establish a connection? ...
2
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POS MONITORING
Posted by David Cole on 22 March, 2001 - 10:10 am
I have a requirement to implement a Modicon PLC program with POS Monitoring. What or where can I find information on POS monitoring.
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Help ! Capturing IO from a com port
Posted by Dave on 21 March, 2001 - 6:54 pm
My company use a Windows based application called Winpak, which is mainly used to buffer / unbuffer security alarm panels. This is done via a modem on COM1 connecting at, yes, 1200 Baud !!! One of my collegues has to dial into about 30 clients everyday just to perform the unbuffer process - V. Tedious. What I'd like to be able to do is monitor exactly what the application is sending down the
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SERVOMOTORS and PLCs
Posted by Danielle Singh on 21 March, 2001 - 6:48 pm
connecting a servomotor to a PLC
3
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Has anyone worked with PFS
Posted by Alex van Dalen on 21 March, 2001 - 6:47 pm
Has anyone used Process Functional Specifications (PFS) from Specsoft? Looking for comments.
22
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Technology Stocks
Posted by Shantanu Apte on 21 March, 2001 - 6:46 pm
Why do the stocks that are known as TECHNOLOGY STOCKS not include the big names in automation .
4
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Information about digital flow meter
Posted by Luis_Darkins_Cortina on 21 March, 2001 - 6:42 pm
Need advice or technical info for "Polysonic" portable digital flow meter
14
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Systems Vendors / Integrators
Posted by Ken Brown on 21 March, 2001 - 6:33 pm
I would like to know your thoughts on the following observation. Is it just me or is there a dramatic increase in competition from automation product manufacturers for systems work? ...
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Automating Iconics AlarmWorX
Posted by Jeff Lowes on 21 March, 2001 - 6:30 pm
I'm looking for a way to automate the Iconics AlarmWorX Server.
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Nokia NMS/10 to PlantScape SCADA Interface
Posted by Mark Mullins on 21 March, 2001 - 6:27 pm
Interfacing the alarms and events from a Nokia Network Management System (NMS/10) to a SCADA (Honeywell PlantScape SCADA).
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Power
Posted by M Paul on 21 March, 2001 - 6:26 pm
Compared to a 60hp motor, at peak operations will a 10hp Electric motor use only 1/6th the power to operate it? it looks like it should right.
2
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PLCs commissioning times
Posted by Martin Webb on 21 March, 2001 - 4:32 pm
We have a relatively simple control system that consists of 2 modicon Quantum PLCs, approx 1000 I/o, that are a mixture of simple digital I/O and 4 to 20mA analogues. There are four PIDs. There is a SCADA server running Factory link7, and 3 workstations. ...
4
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Stepper control boards and parallel PC port
Posted by Sandro Fergnani on 21 March, 2001 - 4:30 pm
In the past weeks I was looking for a stepper motor control board to build a hobby CNC foam cutter. Why are commercial boards so expensive ? ...
IDE for C, C++ and java
Posted by Mario de Sousa on 21 March, 2001 - 4:29 pm
For all the coders out there, here is a link you might be interested in - A GPL'd Integrated Development Environment (IDE) for gcc, et al. http://www.objectcentral.com/vide.htm
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Solid state relays
Posted by Colin Cooke on 21 March, 2001 - 4:20 pm
I happened upon this site with a web ferret. I saw this description: Solid state relays - control input 4-20 milliamps. This is just what I am looking for, but now can't find any reference to the same. Can anybody help. Many Thanks Colin Cooke
Vortex Tube Cabinet Cooler
Posted by john on 21 March, 2001 - 4:19 pm
hi, i'm after some information on Vortex Tube heat exchangers that work on compressed air.Also I would like to know if there are any distributors of these in Australia?
Controlling Moisture Content of Tobacco Blend
Posted by Feri Handoyo on 21 March, 2001 - 4:18 pm
Could anyone give advise in designing control system to control MC in tobacco blending
3
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Sealevel vs ComputerBoards for I/O Control Under Linux
Posted by D.V.Rogers on 21 March, 2001 - 4:17 pm
Decision time! Deliberating between Sealevel and Computerboards for I/O control under list. Seeking advice!
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Interfacing to Yokagawa DCS
Posted by Michael Sing on 21 March, 2001 - 4:15 pm
I need to know the available means to interface Modicon PLCs to Yokagawa DCS at the hardware level and software level (HMI).
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RFC: PuffinPLC Pipes
Posted by Scott Whitlock on 21 March, 2001 - 4:03 pm
Now that I've had some time to think, I'd like to follow up on the ideas I put forward about "Pipes" connecting PuffinPLC "Nodes". ...
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ActiveX Control for Trending
Posted by Buddy Dixon on 21 March, 2001 - 8:29 am
Wanted to know if anyone has seen or used a good Trending ActiveX control for VB 6. I need to trend data stored in an Access Database. I've found several on the net, just looking for more options.
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Help ! Capturing IO from a com port
Posted by Dave on 20 March, 2001 - 2:49 pm
Looking for some help on capturing serial data
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S7 communication
Posted by Salai Kuberan E S, Manager/C&I on 20 March, 2001 - 1:29 pm
Does Siemens S7 300/400 PLC need CP341 communication processor to communicate with SIPART single/Multi loop controllers. If yes, what are the requirements to be met to make them talk ? If no, what is the alternative ?
gadget help needed
Posted by Walt Boyes on 20 March, 2001 - 1:21 pm
A group of my friends and I (http://www.readassist.org) are trying to find a page turning device that actually works. ...
Control software source
Posted by Dennis Mezz on 20 March, 2001 - 10:40 am
Looking for open source code for IEC 61131 PLC language and PLC control software for Linux