Plc PROGRAMMING +LabView programing

Hi ,
Can anyone please tell me if we can get PLC functions from LabView itself ,if,yes,how should we proceed for that ?
Thanks & Regards !
sarita bhan

Hi!
    Do you want to interface PLC programming languages code (IEC 61131-3) with labview or you wish to translate a sw written for a PLC to labview? In the first case I don't know if it is possible, you can interface C code, and import dlls, but I don't know about importing FBs or something similar.
   Anyway, I think Labview is similar to FB programming... expanded. Some main concepts hold in both languages, while Lv gives you more possibilities, hence it's slightly different; but I'm confident you can become familiarwith labview quickly.
   I don't know if I answered your question (maybe implicitly? ). If this is not the case, please tell me more. And one important thing to know is: what is your target? Are you developing an application for a PC, an embedded, FP...?
   have a nice day!
graziano

Similar Messages

Can LabVIEW be used to activate a test device running on a Keyence PLC programmed with Keyence Ladder Logic?

Good Morning,
I'm working on automating a test at my workplace. We have an automatic test fixture that is controlled by a Keyence PLC running on Keyence Ladder Logic. It worth mentioning that the data from the test is monitored with a Chatillon digital torque gauge. I was hoping that I would be able to program LabVIEW to activate the PLC and then have LabVIEW record the data from the Chatillon for the test. I'm pretty sure I can get the Chatillon torque data into LabVIEW, but am unsure even where to start with the PLC. I realize that I might not be able to use the PLC with LabVIEW, but just thought I check for certain. Any help with either the Torque gauge or the PLC would be greatly appreciated.

Giridhar_Rajan wrote:
Rolfk,
Thanks for your suggestion on this. Perhaps i could develop
a VI library for myself which could communicate with the keyence
PLC and perform all the operations mentioned in the keyence manual.
Thanks everybody for your valuable suggestions and help.
This is always another option. I implemented several
VI libraries in the past to access PLCs and PLC alike systems over
serial port and TCP/IP directly such as AutomationDirect PLCs, Siemens
AS511, Opto22 SnapIO, Haidenhein TNC, etc. However don't underestimate
the work this will be. In general if the protocol is documented at
least I can get something working in a single day, but until the
protocol libraries are so well developed that they can work stable and
reliably over days and weeks of uninterrupted communication with the
device, you easily spend anything from one week to five or six weeks of
development work. The difficulty is usually not to get the
communication going, but to get a library that can cope with
communication errors by ignoring certain errrors or retrying the
operation even before the higher level software gets aware that there
might have been a problem at all.
Of course if OPC is the only commercially available option and you do
need to operate on a RT target for instance there is no other option
than to dive in such a driver development. If however your time is
limited and you do want a rather reliable operation and can work from a
normal Windows computer using an OPC solution will almost always be
easier, cheaper and much better for your blood pressure.
Rolf Kalbermatter
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

Integration of PLC(programming logic unit) in SAP

i'm facing problem with this, our client is using PLC (programming logic unit) for there manufacturing ,so with out third part tool how can we integrate in SAP plz any one can help

kishore.
i am just throwing ideas now, its impossible to debug over forum.
go ahead and just check all switches between qa and prod in OOAC, confirm they are all the same,
check OOSB - check that the user profile is in both environments, with same dates, and eval paths (display objects).
DFCON = 1 means Deny 99999999, but Evaluate Organizational Unit (if available). Check if there are any differences in IT0001 of the org unit ids, in production perphas Org unit ID is not filled on the record where position is = 99999999.
in general your team should review this link: http://help.sap.com/saphelp_47x200/helpdata/en/56/db5bc71a64c94f9f2e3cb63e14c867/content.htm
review orgpd switch as well:
http://help.sap.com/saphelp_47x200/helpdata/en/c7/4aba3b3bf00152e10000000a114084/content.htm
review how org key works (different than org ID previously mentioned):
http://help.sap.com/saphelp_47x200/helpdata/en/7f/1a7d3c8015d10ee10000000a11405a/frameset.htm
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Replacing a PLC with LabView Article

I just read the article "Replacing a Programmable Logic Controller (PLC) with LabVIEW and FieldPoint for Composting Plant Automation ". I am very concerned by the author's lack of knowledge about current PLC's. This article does not fairly compare the two platforms and is not accurate. For example, the author states that 100 msec is a typical response time for a PLC. This is absurd. Today, even low end PLCs can achieve responses time below 10 msec and high end PLCs even as low as 1 msec. It all boils down to specifying the right hardware for the application. One real danger the author does not address with building a "soft PLC" is the potential for the I/O not to fail to a safe condition if the operating system (Windows) lock
s up. This can be disastrous and unsafe for many control applications. I would suggest any reader that is seriously considering replacing a PLC in an industrial environment with a "soft PLC" watch out for this potential shortcoming. Readers can visit www.isa.org to find additional information on this issue.
I would not dispute that for a pure data acquisition application LabView can offer a superior solution. The safety conern can be mitigated if there is a "hard wired" safety system that has been properly designed. However, many times the PLC may provide safety shutdowns that depend on its true deterministic operating system and high reliability.
I hope that readers will not interpret this as a slam against LabView but as encouragement research this issue further from a different perspective.

I can see from your comments that you have a firm grasp of the PLC/vs PC concept, and agree with your comments. I have been an instrumentation developer/integrator for 36+ years, and have first hand experience with the situation(s) to which you refer. I have found the optimum solution has been a combination of PC/MMI software and PLC hardware. I have many such systems up and running in different industries, and have found this to be the best overall solution. Let the PC do what it does best(MMI display, complex calculations and decision making), and the PLC what it does best(solid deterministic control, with a non-windows operating system). I usually use an OPC server for communication between the two units, and with proper software design on both ends,
and a hardwired E-Stop system, excellent overall opertion/safety is achieved.
Your comments should serve as good stimulus for other developers.
Dave

I want to interface s7 1200 plc to LabVIEW 2011

i am not getting proper bit address in plc, i follow this attachment but i think it is not sufficient to integrate plc with LabVIEW
advance thanking you...!!!
Attachments:
NI-Tutorial-13911-en.pdf ‏536 KB
NI-Tutorial-13911-en.pdf ‏536 KB
NI-Tutorial-13911-en.pdf ‏536 KB

Hi Sachin,
These cameras will be interfaced throught ethernet or USB. Will they be connected to the PC running Win XP or are you looking to interface them with the cRIO.

Interface of Allen Bradley PLC with LabVIEW using TCP\IP modbus protocol

Hello.....
I want to connect a Allen Bradley PLC with LabVIEW using TCP\IP modbus protocol.
The PLC which I am using is a series of 1766BWA (Allen Bradley) please can you help me for the same or please give me suggestion.
Also I want to know the resistance values of this PLC.
Thank you.

Hello
I was trying for connection of a Allen Bradley PLC with LabVIEW using TCP\IP modbus protocol.
Here I am attaching the snapshot of PLC interfacing and communication vi using modbus but it is not working
For reading we use setting shown in CHANNEL 1-modbus but it gives error regarding modbus addressing
and for writing it shows error illegal address please help me for the same.
Thank you.
Attachments:
PLC_SCREEN.zip ‏261 KB
Modbus_(Read-Write).zip ‏14 KB

I am trying to run PLC programming software, Click, thru windows 8.1, has anyone had any luck?

I am trying to run a PLC software, Click, on a Mac Pro with a windows partition and windows 8.1 software. The software runs fine, but cannot recognize a USB port. Does anyone have an answer for this or tried the same thins?

I am trying to run iTunes on a PC with Windows 8.1, but the setup wizard tells me there is no space on the D:/ drive, which makes sense, since my D:/ drive is a CD-ROM.
Even though you're getting a slightly different error message, try the following user tip:
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Is it possible to acquire string data from PLC through LabVIEW?

Hi All,
I am using Labview 8.6 and modbus library to communicate with a Allen Bradley PLC and exchange data. the screenshot of library and its usage is attached. the operations possible right now with this library are r/w of bits and bytes. Now there is a requirement to transfer the log table inside PLC to the labview. Using the available provisions in the library, there is no method to read the PLC memory which stores the log table. So I am left with the option of copying the log table memory into input registers and reading input registes into Labview, continuing until 128K of log data is read. But this doesnt really appear neat. Is there any other way of transferring Log table data into Labview?
Is there any other forum in which I can ask this question?
Thanks.
Attachments:
Modbus Library.png ‏71 KB

I had a project to communicate with omron plc with opc server.
ni opc server configration window,you can config the tag with storage address you wanted.then you can connect your labview application to plc through opc server.
by this way, i can read and write most of the data type,including string.
your labview application act as the client for the opc server.
sorry for my poor english.

May i know how to control PLC using LabVIEW? My PLC is Omron CJ1M-CPU11-ETN21.

Hi,
I am novice in LabVIEW, and i need help in the configuration between LabVIEW and the PLC. My PLC is Omron CJ1M-CPU11-ETN21. I have DSC Module and i have OPC Server as well. I did create tags or even used shared variables to try to write to the output of the PLC, but it does not works. The configuration for the PLC ethernet had done, and i can control the PLC using CX-programmer through Ethernet module. May i know what are the problems?
Regards,
prchin
Solved!
Go to Solution.

Check out this webcast I hope it will be helpful.http://zone.ni.com/wv/app/doc/p/id/wv-263
Regards,
Naqqash.
Naqqash

Siemens S7 300 PLC and Labview Communication

Hi,
I am attempting to communicate between Labview 7 and a Siemens S7 300 (CPU 314) PLC. I would prefer the communication to be over Ethernet or RS 232. Could you help me out with this implementation and let me know what additional hardware/software I may require for doing this.
Thanks,
Shameek

Shameek wrote:
I am using a CP-343 communications processor to connect the S7 300 to industrial ethernet.
Now can I commnicate directly from Labview to the PLC?
I still havent figured out where the OPC server comes in and whether it is an option or a necessity.
Using OPC is an option.
Siemens has an the add-on ($$) library/FB that includes code for enabling Modbus communication with S7 300 CPUs. I've never used it, but info is here.
<snip>
Our solution
With its MODBUS function block (FB) and the CP343-1 and CP443-1 SIMATIC S7 communications processors, Siemens can supply a proven solution for the integration of SIMATIC automation systems into other system landscapes. This function block enables data to be exchanged easily between MODBUS-compatible devices from different manufacturers and SIMATIC S7 stations from S7-300 and S7-400 systems.
</snip>
=====================================================
Fading out. " ... J. Arthur Rank on gong."

Interfacing between Delta PLC and LabVIEW

When I am interfacing with VI and delta PLC, its taking too much time for communicating. after that some ime this error also is coming....please guide me with this....I am using DSC module and kepserver(OPC software).
Attachments:
SVE error.png ‏49 KB

Hi azadplc007,
It is an error related to deployment of shared variables.Please go to this discussion.
http://forums.ni.com/t5/FieldPoint-Family/Shared-Variable-Read-Error-1950679035/td-p/584832.
Regards
SrikrishnaNF

What is the link between PLC and Labview

provide me details regarding Subtitution of scada with labview

Lots of details if you follow this link:
http://ni.com/labview/labviewdsc/what_is.htm?node=10418
=====================================================
Fading out. " ... J. Arthur Rank on gong."

Looking for full time position using Labview and/or PLC's in Long Island NY area

I have 13 years experience using Labview for user interface/daq applications. I also have 20 years experience with Programmable Logic Controllers (PLC) programming for industrial machine controls. My resume follows:
Adam Wechsler
111 Holbrook Rd.,Holbrook,NY 11741,(631) 981-1013 [email protected]
Objective
Labview programming, virtual instrumentation, industrial machine controls,
automation, PLC, HMI, GUI, data acquisition
Education:
B.S. Mechanical Engineering 5/89
Polytechnic University, Brooklyn, NY
A.S. Engineering Science 5/86
Suffolk Community College, Selden, NY
(GPA 4.0 Dean's List Spring 1986)
Experience:
Controls Engineer 5/1994-3/2009
Vacuum Instrument Corp., Ronkonkoma, NY
*Program, troubleshoot, and upgrade automated Vacuum Chamber Industrial Leak Detection systems controlled by Allen Bradley PLCs in an OEM environment.
*Debug equipment functions and programs prior to shipping, at customer's site, and by phone.
*Integrate and install various types of peripheral equipment, barcode scanners and printers,
*Design and develop Labview graphical user interfaces and HMI applications including recipe management and data collection for industrial machinery.
*Write and review user manuals and installation instructions.
Production Engineer 10/1989-5/1994
Izumi Corporation, Yaphank, NY
*Program, maintain, troubleshoot, and repair PLC controlled hydraulic, pneumatic, and control systems for automation in a hands-on environment.
*Improve design for manufacturability of new products and prototypes to be urethane/injection molded.
*Program, maintain, troubleshoot, and repair six axis hydraulic paint spraying robots.
*Create interface between multiple PLC’s and central computer system.
*Improved design and productivity of high volume, computer controlled, robotic molding machine by 150%.
Consulting Projects:
*Created Labview user interface components, and recipe management system for the testing of motion control servos.
*Programmed Allen Bradley PLC machine logic for packaging machine for a food service supplier.
*Created Labview to Allen Bradley PLC setpoint and monitoring interface for electric motor-starter test stand.
*Programmed Allen Bradley PLC and PanelView operator interface terminal for cosmetic packaging assembly machine.
*Developed Labview application for Fourier and statistical analysis of myogram biomedical data for researching the efficacy of acupuncture treatment.
Other:
*Attended National Instruments Labview training courses, and regularly attend local Labview Users Group meetings as a long standing member.
*Member IEEE
*13 years experience with Labview
*15 years experience with vacuum chamber, mass spectrometer, and related technologies
*20 years experience with PLC's and automated systems
*Attended Autocad training course.
*Willing to travel

Will also consider contract, part time, or consultant work.

Data plc labview

First off thank you for anyone that reads this, I am very new at LabVIEW, and I think this maybe a trival question but I am not sure.
I am building a test bench to measure the torque vs angle of clutch disc to find the hystersis. I am confedient that my program is fine to record the data. I am usin a servo motor to apply the torque and when the torque gets to high I want the plc to shut off the servo motor. I want LabVIEW for the data acqusition but the plc for the control. I have no experience with modbus. I was wondering if i could share the output from the torque transducer with both the plc and LabVIEW or would this weaken my signal and affect my data? The torque transducer is a mv/v output, the tourque transducer is TRS-20K from transducer techniques. I will be using a PLC from automation direct, and a NI-9237.
http://www.transducertechniques.com/trs-torque-sensor.aspx
Thansk for your time
Solved!
Go to Solution.

Hello Carl,
It sounds like all you need to do is send an on/off signal to a PLC. Any communication (modbus, OPC, DataSocket, EPICS) that occurs between the host PC and a PLC is non-deterministic. These will all result in some form of varying delay.
The USB-DAQ will be able to output a signal from your computer to your PLC. If you program the PLC to record the signal from the DAQ to control your transducer, this should work. There will be a delay between when you send the output signal to the DAQ and the PLC reacts. This delay will not be deterministic. It will vary depending on your current operating system usage. With that being said you should be able to get a response within 100ms.
How fast are you looking to control this PLC? Do you need the control to have a deterministic/consistent delay? Are you doing closed loop control testing?
Hypothetically, if your computer crashed while the DAQ is in applying torque, you would still be applying torque until you reset the device. If you continually torque, will this damage any of your setup? If so, I would recommend implementing some kind of watch dog timer on the PLC which can be reset by the DAQ.
If you are looking for a deterministic solution, I would recommend using a cRIO with LabVIEW Real-time.
Regards,
Thomas C.
Applications Engineer
National Instruments

Force in labview the variables of a PLC

Hi,
I want to make a simulation in labview. I have a PLC connected to labview through OPC. I have a lamp and a switch in the front panel in labview and I want to click the switch to force the input in the PLC and the PLC, due to the program that it have inside, will activate the output that will turn on the lamp, in Labview again. This first simulation is very simple but then I want to make a more complex simulation. I have the simulation on the computer but the PLC as a hardware. I know that I can force the variable with the Step 7 MicroWin but I would like to know if I can force the variables in the PLC through Labview.
Thanks,
Maiki

I think you ve to use the Shared variables to send the PLV variables to LV, using the Shared Variable Engine & I/O Server communication meant for OPC in LV.
Do you have the LV DSC module?
- Partha
LabVIEW - Wires that catch bugs!

Plc PROGRAMMING +LabView programing

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