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discrete signal
Posted by farzad nasehi on 5 February, 2002 - 3:36 pm
I have been involved in an automation project in a dairy plant and have 2 questions concerning discrete signals...
Omron Retail POS Communication
Posted by Len yeung on 5 February, 2002 - 3:32 pm
I'm a software developer working for a system integrator company here in Philippines and one of our client requirements is to be able to retrieve data from an Omron PLU server...
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Load Cell Interface
Posted by Weigh_man on 5 February, 2002 - 3:11 pm
Need help in intefacing load cells to PLC's via PROFIBUS
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Control Net configuration
Posted by Doug on 5 February, 2002 - 2:50 pm
2 processors controlling output modules in the same remote chassis over Control Net. Help...
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Cimplicity READ error
Posted by Florin David on 5 February, 2002 - 2:49 pm
I am trying to connect Cimplicity with Allen Bradley SLC 5/03 through DF-1 protocol, and I get the error "READ: Data length check error"...
Omron DIFU vs. A-B OSR
Posted by Stephen Wright on 5 February, 2002 - 1:55 pm
Can anyone tell me why an OMRON DIFU command works differently than an A-B OSR?
11
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Hydraulic Ram Length Sensing
Posted by Paul McGowan on 5 February, 2002 - 12:32 pm
To measure the ram extension of a hydraulic ram...
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CAN with bus length >=1km possible?
Posted by Erwin Torbeyns on 5 February, 2002 - 12:11 pm
Does anyone have *actual* experience using CAN with >= 1km bus length?
3
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Intouch Wonderware Structure
Posted by Pierre R. Hinse CET on 5 February, 2002 - 11:48 am
Does anyone have information on Intouch Wonderware Structure... Does anyone know what it based on?
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looking for guidance hardware
Posted by Pierre R. Hinse CET on 5 February, 2002 - 11:44 am
Does anyone know of a differential GPS system, in a hardened enclosure. That would transmit position, bearing, speed to a PLC...
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MAT talk slides
Posted by Curt Wuollet on 4 February, 2002 - 4:33 pm
If anyone is interested in a capsule summary of what our project is about, Jiri is presenting at the Australian Linux Conference in the next few days. He has made his slides available...
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"Open" Hardware.
Posted by Curt Wuollet on 4 February, 2002 - 3:24 pm
I had hinted before that a new hardware project was in the works to provide a standard open PLC style platform for PC automation projects that need a home with a PLC form factor and modularity...
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Searching for X.24/X.27 converter
Posted by Jochen Schafft on 4 February, 2002 - 3:04 pm
For testing I need to connect my laptop to the RTU. But I can not find any converter RS-232C to X.24/X.27...
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linear potentiometer
Posted by liping sun on 4 February, 2002 - 2:33 pm
We are looking for a linear potentiometer which is drived by a rotatory stepper motor...
Electronic Wire Gauge
Posted by Bob on 4 February, 2002 - 2:28 pm
Looking for handheld electronic wire gauging device...
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1770 kf2 interface
Posted by rick crowe on 4 February, 2002 - 2:10 pm
i'am trying to interface with a allen bradley plc-2/16 using a 1770-kf2 interface box...
2
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Formulas on Microsoft XL
Posted by VAIDEESWARAN VENKATESWARAN on 4 February, 2002 - 1:57 pm
i have a specific query on using formulas on Microsoft xl...
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Artificial Intelligence in Process Control
Posted by Oldie on 4 February, 2002 - 1:49 pm
I am writting a paper to submit to the IEE (UK) regarding the influence of Artificial Intelligence on Process Control (particullarly Batch Control and S88)...
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Keypad decoding for micrologix 1500
Posted by Ferg on 4 February, 2002 - 11:56 am
I'm trying to develop logic to enable me to punch in a four digit number into a 16 button keypad, and read the numerical result in an integer or string of a micrologix 1500...
Panel Pressurization
Posted by SHAHID WAQAS CHAUDHRY on 4 February, 2002 - 11:34 am
What is the standard practice for panel pressurization?
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grounded thermocouples
Posted by vijay on 4 February, 2002 - 11:24 am
whether sheathed grounded thermocouple can be connected to an isolator...
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over current protection in 3 phase inverter
Posted by kirkpong on 4 February, 2002 - 11:20 am
I want to protect over current in my 3 phase inverter but....
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potential free contact
Posted by kumar on 4 February, 2002 - 10:16 am
What is the exact definition for a potential free contact? Is the output of a relay or a switch is a potential free contact?
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Omron C200HS - how to implement PID instruction
Posted by Steve on 4 February, 2002 - 9:54 am
I've just acquired an Omron C200HS and I have to make a PID temperature control system. But I have only OC225 relay output unit. How it can be done?
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Diference betwen 4...20mA and 4...20mA HART signals
Posted by Armando ABRAHAM on 4 February, 2002 - 9:46 am
Can somebody tell me what is the deference between this two signals?
Sinec L2-DP from S5-95U to OP/17 and hydraulic encoder
Posted by Tony Willard on 4 February, 2002 - 9:33 am
Power failure caused a loss of communications between the HMI/plc/endcoder...
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Siemens S5 to S7 I/O Converter ??
Posted by Iain Smith on 4 February, 2002 - 9:13 am
I/O front connector 'converter' from S5 to S7...
3
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ladder programming advice
Posted by lim on 3 February, 2002 - 11:09 am
i need some ladder programming advice on simplifying my program...
3
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4-20mA anolog signal
Posted by lim on 3 February, 2002 - 11:03 am
how to deal with range outside 4-20mA?? using ladder programming on a Omron C200H PLC & anolog card.
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General PLC specification
Posted by Kamlesh N Parmar on 2 February, 2002 - 1:50 pm
Help is required on what should be the general specification of PLC which is to be used for Compressor start up logic and shutdown logic...
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Position Control Using A Servo DC Motor
Posted by student on 2 February, 2002 - 1:47 pm
Does anyone out there know how to do position control with a servo dc motor? We would basically like to have the motor turn to certain angles at a slow speed...
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Integration of various control systems
Posted by Thomas on 2 February, 2002 - 1:25 pm
Does anybody know about a Real time DataBase software which can have data, history, and alarms from various OPC servers?
9/pc cnc help
Posted by freq on 2 February, 2002 - 1:00 pm
My project is a non precision, low speed, and uncomplicated machine with four axis. I think a 9/pc from A-B would work good. Has anyone had any experience with this controller?
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communication with elektronikon terminal
Posted by Javiyo on 2 February, 2002 - 12:47 pm
I need to control 3 Atlas Copco GA-110 using an Allen Bradley PLC 5/40, but nobody around seems to know how...
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Need power factor monitor 4-20ma sensor
Posted by Trevor on 2 February, 2002 - 12:46 pm
I need a cheap power factor monitor that puts out a 4-20maDC signal to input to a PLC. If it was a specialty card that plugs into a GE Fanuc 90-70 or 90-30 PLC, that would be even nicer...
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mitsubishi plc programming cable
Posted by e sheen on 2 February, 2002 - 12:37 pm
Could anyone help me with a pin out diagram for the 8 pin mini din connector on a mitsubishi fx0s plc, or even a diagram of the 232 to 422 convertor...
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writing a VC program to send data over RS232
Posted by lala on 2 February, 2002 - 12:34 pm
I would like to write a program in visual C to send data over RS232...
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"Open" Hardware.
Posted by Curt Wuollet on 1 February, 2002 - 4:59 pm
Request for comments on open hardware ideas
Connectivity Of Contrologix to TDC 3000
Posted by Blair Bremer on 1 February, 2002 - 4:24 pm
Has anyone successfully communicated to a contrologix processor from an Honeywell TDC 3000 EPLCG?
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How do I choose?
Posted by Michelle Smalley on 1 February, 2002 - 4:22 pm
I need to find a sensor for a school project - fast!
2
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Converting a Resolver Signal to Encoder Signal
Posted by Crystal Majercik on 1 February, 2002 - 1:27 pm
Does anyone know of a product on the market that will convert a resolver signal to an encoder signal...
Status report: The Distributed Real-Time Specification for Java
Posted by Doug Jensen on 1 February, 2002 - 1:26 pm
My web site has a status report on the Distributed Real-Time Specification for Java...
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Code bases for DNP 3, was re: New forum topic - Open Control
Posted by Jake Brodsky on 1 February, 2002 - 12:59 pm
Does anyone know of any GNU or other open copyrightten code bases for DNP 3?
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Concept 2.5 MET parameter
Posted by Chaus Sergey on 1 February, 2002 - 12:56 pm
MBP on Ethernet (MET) mapping index
3
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ControlLogix M02AE (Motion Module)
Posted by B.P. Bompensiero on 1 February, 2002 - 12:52 pm
Can't get counts on Motion Module. First Timer with Logix AND the Motion Module.
5
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Need information on OP7 and OP17
Posted by Oscar Reyes on 1 February, 2002 - 12:49 pm
Need for really good information about OP7 and OP17
2
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Ultrasonic welding of plastic parts
Posted by Ritchie on 1 February, 2002 - 10:17 am
Looking for the best way to weld two small pieces of injection molded plastic pieces.
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Modbus, Modbus Plus and Ethernet networks ?
Posted by sbbone on 1 February, 2002 - 10:08 am
I am just learning Modicon systems and would like to find a web site that explains the capabities of the modbus networks, modbus plus networks and there ethernet networks.
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High Speed Data Aquisition on a PLC
Posted by B Prigge on 1 February, 2002 - 9:56 am
Is there a PLC based product in existence that can be used for high speed analog data aquisition?
5
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MDLC Protocol
Posted by Luis Carillo on 1 February, 2002 - 9:46 am
Im trying to connect a Motorola MOSCAD-L with CIMPLICITY HMI. Does anyone knows a protocol converter from MDLC to SNP or Modbus RTU.
6
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Open control systems ???
Posted by Peter Wurmsdobler on 1 February, 2002 - 8:58 am
Request for comment: What does "open control" mean in terms of components in a control system, architecture, granularity, protocols, etc. ?
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real time clocks
Posted by Ritchie on 1 February, 2002 - 8:57 am
Given that a PLC has a RTC, what is the best way to calculate a future calendar date given the current date plus x-days?
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GE Fanuc Versamax ENIU and Cimplicity HMI
Posted by Raluca Constantinescu on 31 January, 2002 - 2:08 pm
Does GE Cimplicity HMI support GE Fanuc Versamax ENIU? Has anyone tried this? What protocol is to be used?
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ModbusTCP for Siemens Simatic S7300
Posted by Roberto Lizano on 31 January, 2002 - 2:04 pm
Besides the send/receive commands sent through the Ethernet conection between two S7-300 PLCs using the CPs 343-1, which other protocols the CPs use to interconnect the PLCs?
Siemens OP40 / OP47
Posted by Gérard Katje on 31 January, 2002 - 2:02 pm
I am serching for an old Siemens operator pannels...
4
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Rigid Conduit Thread - Taper or straight?
Posted by Gil on 31 January, 2002 - 2:00 pm
Anybody can tell me if there is a standard that defines the Type of Thread on Rigid Electrical Conduit?
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Choosing motor and servo drive
Posted by Gabriel Preliasco on 31 January, 2002 - 1:59 pm
I have a flexographic machine whit 6 print stations synchronized with a line shaft, gears, gearboxes and clutchesand...
Opinions on Colter FMT PLCs please
Posted by Mark on 31 January, 2002 - 1:56 pm
Looking for general opinions on any users of Colter(UK) FMT plcs using the Flex32 software...
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Foxboro PLC/PAS over EthernetTCP/IP
Posted by Georges Ailloud on 31 January, 2002 - 1:55 pm
EthernetTCP/IP (or ModbusTCP/IP)connection between a Foxboro PLC or PAS and a Quantum or a Premium...
4
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How to evaluate DCS system of various makes
Posted by H. Shah on 31 January, 2002 - 1:53 pm
Can anyone help me for the evaluation of the DCS system of various makes?
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panel space clearance
Posted by vijay on 31 January, 2002 - 1:04 pm
What is the space to be provided in front and back of the panel in control room
58
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Rockwell patch for Windows XP?
Posted by Chris Elston on 31 January, 2002 - 11:11 am
Anyone know when might Rockwell software have a patch for Windows XP and RS Logix? Or is it just me and my laptop having trouble with this...
2
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ABB Procontic PLC software
Posted by Mike McDaniels on 31 January, 2002 - 11:08 am
Does anyone have ABB Procontic PLC software?
5
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Modbus Simulation Software For PC
Posted by Peter Simmonds on 31 January, 2002 - 11:07 am
I need a PC program to simulate the Modbus protocol. The PC should be able to work both as a Master and a Slave and in RTU and Ascii Modes...
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Siemens SCL analog filter
Posted by Luis Holguin on 31 January, 2002 - 11:04 am
I am looking for a analog filter that I can code in Siemens SCL for use with 300, 400 type controllers.
5
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Ci-tect/Steeplechase/VB/OPC?
Posted by Michael R. Batchelor on 31 January, 2002 - 10:46 am
I've got a customer who wants us to look at changing the control structure of a small line, and I can't readily find answers to some of my questions...
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Good news for the HMI_GTK module...
Posted by Juan Carlos Orozco on 31 January, 2002 - 10:33 am
Finally the uncomfortable bug that did not keep the scaled property for the GnomePixmap buffer was corrected in a new Glade release (0.6.3) it can be downloaded...
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RSView 32 and VBAEdit will not start
Posted by Rob Taylor on 31 January, 2002 - 10:29 am
I have RSView32 v.6.3, WinNT4/SP6, on a dual CPU motherboard with single CPU. When I choose VisualBasicEditor from the menu, it does not start...
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PLC's used in waste water treatment?
Posted by TT_6SPD_95 on 31 January, 2002 - 10:16 am
I am just trying to find out what everyone MOSTLY see's out there in the wastewater treatment facilities. PLC's, HMI's and such...
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ModBus RS 485 network
Posted by Lala on 31 January, 2002 - 10:02 am
In a ModBus RS485 network , generaly terminating resistors are used along with a capacitor...
Attempting communication with Chromalox 3390
Posted by Derek Pretti on 31 January, 2002 - 9:58 am
I am having trouble using an Allen-Bradley 1746-BAS-T module with a Chromalox 3390 Multi-Loop controller.
6
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DH485 - Windows to AB Basic Card
Posted by Derek on 31 January, 2002 - 9:53 am
Communicating from a text editor (Notepad?) to an Allen Bradley BASIC Card via COM1 using DH485 Protocol.
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New forum topic - Open Control
Posted by Ken Crater on 30 January, 2002 - 3:23 pm
People who have been regulars at Control.com and on the Automation List will recall that our principal mission as an organization is to encourage the advent of open control, in the sense of multi-vendor standards-based systems...
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Control Panelview Node Limitations
Posted by Jay_H on 30 January, 2002 - 3:05 pm
Does anyone have any experience with limitations the number of Panelview nodes on a ControlNet network?
5
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Sercos servo drives with ControlLogix?
Posted by Mike on 30 January, 2002 - 3:00 pm
Experience with using Sercos servo drives (other than AB's line of drives), with ControlLogix?
2
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Siemens Communications using 3964R
Posted by Wayne@Integra-Systems on 30 January, 2002 - 2:51 pm
Does anyone have experince of cummunication with a Siemens S5-115U 944 using 3964R over the second serial interface ?
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pH Preamplifier
Posted by Todd on 30 January, 2002 - 1:37 pm
Does anyone know of a good compact pH preamplifier?
4
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Process temperature measurement
Posted by Hank on 30 January, 2002 - 1:29 pm
I am trying to install 14 type J thermocouples for temperature measurement at a distance of 1000' from the P.L.C...
Mitsubishi 2-axis Controller A1SD5P2-S3
Posted by Chng Hang Yong on 30 January, 2002 - 1:23 pm
This card is downed and this model is obsoleted. Can anyone advise me what model can be used to do a direct replacement?
4
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Industrial Networking
Posted by S.N.Dixit on 30 January, 2002 - 1:19 pm
Can anyone suggest books/website where I can get to learn the programming/methods to make communication between PLC to field, PLC to PLC as well as PLC to DCS / SCADA?
RFID inductive identification system
Posted by Willy on 30 January, 2002 - 1:17 pm
Application with EEPROM and FeRAM TAGS...
3
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Aimax Software
Posted by Yeow Mun Chong on 30 January, 2002 - 12:44 pm
Anybody knows what happened to TA-Engineering, the maker of Aimax?
3
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DeltaV OPC connection
Posted by Radovan Podhradský on 30 January, 2002 - 12:38 pm
I'm looking for somebody, who has some experience in DeltaV OPC connection from C++ OPC client via OPC DA 2.0 custom interface...
2
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OUTOKUMPO EXM7 Serial Interface
Posted by Eduardo Manuel C. Cipriano on 30 January, 2002 - 10:51 am
Need an example of PLC Basic C program to read data from Outokumpo weigher thru it's RS232 EXM7 serial Interface ( Net Weight, Set Weight, Tare Weight, Time of Weight and other)...
Omni Flow Computer to AB KE serial comms
Posted by Joel Weder on 30 January, 2002 - 9:48 am
Omni serial port locks up occasionally.
3
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Modicon 984-685E Modbus Communications
Posted by Joe Hodges on 29 January, 2002 - 3:05 pm
I am trying to connect a Modicon 984-685E PLC to an ABB Advant 450 controller using Modbus...
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1761 net dni to cn2dn
Posted by jaci fuentes on 29 January, 2002 - 2:56 pm
How i can do a connection (mapping) from Devicenet to a ControlNet using a DNI attach to a micrologix 1500 and a 1788CN2DN ?
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linux project
Posted by Binoy Ketan Dash on 29 January, 2002 - 2:27 pm
Whatever value I give to USLEEP in my program it exceeds by 10msec. And also I am not able to get time period less than 10msec...
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Hydraulic motor
Posted by Arturo Arevalo on 29 January, 2002 - 2:06 pm
I have a hydraulic motor that I need to replace for a servomotor, I need to choose the capacity of the servo based on the following data...
6
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Data collection from Siemens SIMATIC S7???
Posted by Pavel Horak on 29 January, 2002 - 1:49 pm
How to collect PLC data from Simatic S7 on non PC (classical PC) HW...
5
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Instrumentation basics...Where can I look?
Posted by guy on 29 January, 2002 - 1:40 pm
Need information on process instrumentation basics...
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DP Flowmetering in existing piping...
Posted by Anonymous on 29 January, 2002 - 1:35 pm
How obtrusive are they?
2
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Active/Passive Barriers
Posted by balu09 on 29 January, 2002 - 1:33 pm
What is the difference between active and passive barriers?
6
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Cable for Micro 84 to a PC?
Posted by sbbone on 29 January, 2002 - 1:30 pm
Is there a cable that will connect my PC using prowox Nxt to a Micro 84 PLC? What is the Cable #? Thanks for any input.....
3
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OPC Java Client
Posted by Wolfgang Baldauf on 29 January, 2002 - 1:26 pm
We are developing a HMI in pure Java. There for we need an OPC client.
Barrier model support
Posted by Raja Mishra on 29 January, 2002 - 1:24 pm
Is there any Barrier model that can support two transmitters connected in parallel?
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Buoyancy Control of ROV's
Posted by Paul Gill on 29 January, 2002 - 1:19 pm
Does anyone have any simple methods of controling buoyancy of model ROV's. Possibly using syringes and solenoid valves...
4
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S5 square root function
Posted by fids on 29 January, 2002 - 1:15 pm
how to make a square root function in the s5-95u?
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RS 422/RS 485 Limitations On Number of Multi-dropped devices
Posted by Richard George on 29 January, 2002 - 1:01 pm
Can anyone advise what, if any, is the maximum number of devices which can be multidropped using either RS422/RS485 serial interfaces employing Modbus RTU protocol?
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Siemens MPI communication hang
Posted by yiewming on 29 January, 2002 - 1:00 pm
Why MPI communication between two Siemens S7 PLC hangs after power failure...