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Showing results for tags 'now a software solution is available for your modbus (mb) needs in rockwell/allen-bradley control logix or compact logix (clgx) family processors instead of a traditional 3rd party hardware like prosoft mvi-56'.

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  1. hello everyone, I'm trying to connect PC with Micro830 with RS232 cable for transfer serial data. However, the PLC can not receive the character from PC. I used ARD function block to read the characters from PC.  there is no error and the output of ARD function block is 0 when I debug ladder programme. the serial communication state LED illuminated once I send a character from PC to PLC. the channel of input is 2 which is the embedded serial port. I use an adapter from USB to RS232. Email: jeremietang531@gmail.com      
  2. Hi, Could someone explain or direct me to better understand the RS Logix 5 comparison tool? I'm comparing multiple PLC codes and having a little bit of trouble understanding what the concept of "deletion", "insertion" etc are portraying. Since, some rungs are labelled 'deleted' and 'inserted' in the comparison, however,  the rung labelled deleted seems to exist in the actual code?
  3. Hello admin, Im new to PLC domain , i have one OMRON CP1E N30 with in built RS 232 port and ladder program to run in Homing and forward and reverse motion. I want to control the PLC from a computer using RS 232 communication. From what little i read from manual supplied for programming ,i came to know that there are two type of commands C mode as well as Fins commands. My doubt is whether these commands can read/write CIO memory addresses that are used to set and reset the motor enable/disable in ladder program through CX programmer software? for example: in my ladder program CIO memory address 30.00 is the motor enable/disable address so if i want to control externally from a PC to enable/disable the motor ,which commands should i use and is there a format to send these commands as well as the value. I am planning to build a GUI in Labview to cotrol the PLC via Serial RS 232 . How can i do it ? Thanks in advance.

  4. Mitsubishi iQ-R Series

    CementMatt posted a topic in Mitsubishi

    Hi Has anyone got any real life experience with the new Mitsubishi iQ-R series?  I have been assigned a major capital project to replace our old ageing DCS system.  Our current PLC backbone is about 40x Q2ASHCPU, 10x Q06UDEHCPU and about 2xA2SCPU all linked up via Melsecnet/10 network with communication links into the DCS system via Modbus RTU utilising the QJ71MB91 modbus card. Due to the nature of my companies process and the limitations on plant downtime it is estimated this project could take up to 5 years to complete, with this in mind I am wanting to install a system that will not be obsolete (or unsupported) in a few years, hence, I am very interested in the new iQ-R series with it being Mitsubishi's latest and greatest.  However, recent communications with my local Mitsi rep is not filling me with confidence that the iQ-R series is not as well supported/developed as the Q series.  A major requirement during the development stages of this project is the new ability of the new processors to be able to talk to the old DCS up until a point where the DCS nodes will be completed removed and replaced with a modern SCADA package.  Hence, the requirement of a Modbus Slave card for the iQ-R (i.e. a QJ71MB91 equivalent) which I am told is in development, but has no fixed timescales.  Previous experience with Mitsubishi developments of cards is normally years not months. Any information anyone can provide on their experience of the iQ-R series would be greatly appreciated and if anyone knows if a Modbus Slave card is in development that would be useful.  I realise i could utilise the Q series extension rack with a iQ-R processor but this is not the route i want to go down. Thanks for any help and apologises for the war and peace. Cheers Matt
  5. Hello everyone, we have two damaged analog cards for CompactLogix PLC ( 1769-OF8C  & 1769-IF8) that we are going to replace. my experience is with Siemens and Schneider PLC's  but for Allen Bradley, not so much so my question is : are there any requirements or specification other than the part-number that could prevent the cards from going in service directly ? as for the firmware, series and so on ?  and do i need to do any extra work after replacing the card ? thank you Best Regards
  6. Hello,    I have a Cognex insight 5100 camera connected to Allen Bradley L62 processor. The is working fine since the last year but sometimes the I/O module faults out with error code 16#0022. I looked online it look it needed a Ethernet cable change ( I did that but no results).  Then I looked at the firmware in the I/O module and firmware in the camera and I found a difference. The firmware in the camera is 4.06 and the firmware of I/O module in the PLC is 4.005. Can anyone help me resolve the communication issue ? I want to know how to downgrade the camera firmware or change the revision in the PLC ( which I cannot )    Thanks in Advance 
  7. Hello,    I have a Cognex insight 5100 camera connected to Allen Bradley L62 processor. The is working fine since the last year but sometimes the I/O module faults out with error code 16#0022. I looked online it look it needed a Ethernet cable change ( I did that but no results).  Then I looked at the firmware in the I/O module and firmware in the camera and I found a difference. The firmware in the camera is 4.06 and the firmware of I/O module in the PLC is 4.005. Can anyone help me resolve the communication issue ? I want to know how to downgrade the camera firmware or change the revision in the PLC ( which I cannot )    Thanks in Advance 
  8. I have a c-more HMI and an Allen-Bradley 1200, is it possible to set them up with two AB 1764-NET-IAC+ to have my computer monitoring the PLC at the same time, I have established communication from my computer to the PLC through the IAC, but I haven’t been able to integrate the HMI, is it even possible?. This is been setup for training purposes, any help would be appreciated.
  9. Good afternoon fellow members,I once again ask for your help to know if any of you have struggled with similar issues. For the past year and a half, Every 1-2 months we seem to be losing communication with one of our PLC's/racks. We have in the rack a 1756-EN2T card (revision 3.006) that will flash as if it is communicating and status OK (green LED), yet we will be unable to ping it and our operator interfaces go into error. We could also not open the web browser page of the EN2T card, nor connect to the PLC/rack through RSLogix5000. As this happened over the weekend, the local electrician was called and he tried cycling power to the rack and there was no change after it came back on (not sure how long he left power off to the rack though). The problem seemed to be fixed after we told him to pull the EN2T card out of its slot and then re-insert it.We verified the CIP cinnections for this card and it is around 98 to 101 CIP connections out of a max of 248, so not too high. the card's CPU usage is 24-29%, so no indication of problems there. EN2T Card is set to auto-negociate, just like all the other cards we use at all of our plants. Has anyone ever experienced a similar problem?Thank you in advance for all your help and knowledge-sharing!
  10. Hi everyone! I am currently using both Motion controller Q172DSCPU and Simple motion controller QD77MS for my application. I spent time for Advance synchronous control with Motion controller QD172DSCPU. However, I wonder that is there any solution to combine synchronous control and interpolation control? For example, I need controlling 4 axes consisting of 3 axes for helical interpolation and 1 axis for linear position control. The problem is that all 4 axes start and complete position at the same time. Does anybody have experience in this? please share your ideas. Thanks in advanced.  

  11. Beckhoff Control panel testing?

    acuralegendz posted a topic in Other PLCs

    I am a technician at a large repair facility and we often have Beckhoff control panel displays come in for repair. I'm having trouble using Twincat to set up the buttons on a CPxx to test the buttons and assignable leds. We have a PC running windows XP with the twincat software, a CP9035 pci card to connect the CP to the pc, i can see the PC's display on the CP and also recognize the CP in twincat, just unsure how to map testable functions to the keys on the CP. Hope this all makes sense. Hopefully there is a Twincat guru out there that knows how to do this. Thank you!!

  12. i need help

    Dillon's stickers posted a topic in Allen Bradley / Rockwell Automation

    I need help programming an allen bradley 2711R-T7T touchscreen. I'm using a micro 850 PLC and I cant figure out how to use the momentary PB on the screen to make the light on the screen turn on. I can turn the light on with the PB that is on the panel door but not the one on the actual screen. Any tips or suggestions would be greatly appreciated.

  13. Ground Loop

    AKesh posted a topic in Control Panel Building

    Hello everyone, I have a quick question regarding Din rails, chassis ground and ground loops. Here is where I am getting confused. I connect my back panel to earth ground which, connects my control panel chassis to earth ground. I screw din rails on my back panel. Question #1: logically, my din rails are now connected to earth ground through the screws connecting to din rails to the back panel. Am I wrong here? As I have seen in many control panels, I connect a ground terminal block to my din rail and connect it to earth ground (the terminal block couples with the din rail through metal clamps). I now use that ground terminal block as a single point source to ground all my other components in the control panel (I connect my ground terminal block to earth ground using a wire).. *** the ten thousand dollar question is Didnt I just create a ground loop between my ground terminal block mounted on the din rail and my back panel chassis ground. For one reason or another the two different location might be at slightly different potentials causing current to flow. Where is my logic off here???? Thank you

  14. Rockwell ORI

    singgihedu posted a topic in Allen Bradley / Rockwell Automation

    Dear All, My friend has software disk rockwell original. I want install rockwell ori to my PC, and i have isntalled it again, but it can not work ( OS PC Win7 pro ) Any can help me ?  #how step install ? any some folder in disk : DriverExecutive, FTgateway, RS Emulate5000,  RSlinkEnterprise, RSlinklite, RSlogix, RS network   Thanks before edu
  15. Hi, I'm a long time lurker and would like to start by saying thanks for all the help over the years, much appreciated!  This is my first post, please be gentle. I'm working through a large project with an L83 (V28) including 75 EIP nodes & 5 servos.  We have a need for quick real-time response of 2 cameras during a quick servo move (taking several pictures).  I've broken my program up into a few event driven tasks (allowing me to chose the execution time interval (5 to 8 ms for more important tasks and 20 ms for less important tasks, etc.)), along with these I have 2 periodic tasks: 1 for my HMIs & faults running every 30ms and 1 for this quick real-time response camera situation running at .5ms which contains my camera and servo logic.  Everything is running well and seems responsive and repeatable enough, but I am now adding the second half of the logic which will essentially double everything (2 up system).  This has made me consider the best structure approach: Is it better to have a few larger routines within a few larger tasks or better to have more smaller tasks containing an abundance of smaller routines or some other different mix? Thanks, JD43    

  16. delta hmi communication speed

    Unobtainium posted a topic in HMI & SCADA

    Hello, i have DOP-07s411 delta hmi and i want to interface it with microcontroller using modbus (RTU) protocol over RS485( 8 bit data,1 stop bit, parity none,19200 baud rate). i have good speed of communication if i do not use macros. But as i place background macro(background macro is only 4 lines ) it slow down and  updates the display at every 3 seconds. i cant able to figure out what is the problem. I want to update display of  HMI very fast.Please help me to troubleshoot the problem.
  17. Hello, I am hoping I can get some assistance configuring an Allen Bradley PanelView C600 (2711C-T6C). All a long I have been able to communicate with the HMI using Ethernet protocol, but after I switched communication settings to what my Professor recommended by using the Panelview software, the Ethernet connection seems to have stopped working. The HMI has now been reset to the factory settings (by pressing ctrl + shift during start up then selecting F1 when prompt appears asking if the user desires to return to factory condition of terminal). Once the terminal resets I am able to eventually get to the configuration screen. When in the communication settings Protocol says "*", Status says "Unavailable", I've changed the device name to "plc" and the Node Address says "0". When I click on the "Ethernet" option the IP mode says "DHCP" then the IP Address, Mask and Gateway all read "0.0.0.0". I get into CMD/DOS PROMPT on my laptop while the terminal is connected to my laptop via an Ethernet cable and type in "ipconfig" to see if my laptop is communicating with the terminal but it is not. The lights where the terminals are located are also not blinking. After plugging in several different Ethernet chords from the terminal to my laptop I am convinced the issue is not the cable. I've tried resetting the terminal several times as well and I'm having no luck. Can anyone assist me with regaining Ethernet communication with the terminal or some work-arounds? I see there is an option to use the USB but it looks like AB no longer provides the drivers on the website. If it helps, the manuals I am using are 2711C-UM001 and 2711C-QS001.
  18. Hello  I try to connect my load cell via RS232 serial port 2 to PLC (PC1L-EM) but it dose not work could you please let me know what is my mistake  Thanks in advance Ebby Untitled.cxp
  19. Hi,  I'm trying to test the serial communications with my Micro820. I acquired a 2080-SERIALISOL so I could have "someone" to talk to. I want to use RS485, so I figured that I'd have to connect: Modbus pin 1 (D+) to serialisol pin A1 (+485) Modbus pin 2 (D-) to serialisol pin B4 (-485) Modbus pin 3 (GND) to serialisol pin A2 (GND) Now when it comes to CCW, the thing gets a little harder. I know I need to use the MSG_MODBUS block (in fact I need 2, one for the modbus and another one for the serialisol), and I guess I specify the interface I'm using on the TargetCfg field (data type MODBUSTARPARA). But how do I figure out that the Addr (UDINT) and Node (USINT) values are for my Modbus and Serialisol? Or am I doing it wrong? Does anybody know of any place where I can get some more guidance or even a funcional ladder program? Thank you in advance
  20. Dear All   Sorry for my English I have Siemens CM1241 (picture attach) and need to communicate with Intellisys XE 90 via Modbus RTU, period. The problem is, form XE 90 the connector is Phoenix Contact 2-Position Screw Plug Connectors MC 1,5/ 2-ST-3,81 1803578,or in other word, only 2 contacts form P9 COM1 = L1 , L2 (picture attach). How we connect it to DB9 Female in CM1241? What signal go to what Pin? How about the Ground? Do I need Resistor?   Thanks for all your supports   Best Regards

  21. RTU Modbus CJ2M CPU34, SCU31-V1,

    kingkumak posted a topic in Omron

    Hello everyone. In my project I have to communicate Omron CJ2M-CPU34 PLC with TRANE chiller via Modbus RTU protocol. Unfortunately, I never use this protocol and I have no idea where should I start. I'm looking for examples and advices. If someone has experience in this topic please help me. I attach TRANE chiller documentation. Especially I want to use function 5,6 and 4.  CGAX-CXAX_Protocole_Datalists.xlsx CG-SVU007C-GB_0915.pdf
  22. HI guys, does anyone here knows the data logging format for plc AB 1766? I had looked into manual but I cant find it,may be i'm miss look it.
  23. I am currently working on a fwd rev motor control routine, we have all of the circuit wired up and verified the physical circuit is working as intended when manually jumped. But will not turn the outputs on...  I triple checked my logic and it all seems right, all inputs are true all the way to the output on both the fwd and rev rungs. But still the outputs won't go true. if I toggle an output bit it does show up on the dc out card, I haven't tried forcing anything.  No errors or warnings, fuses are fine. our teacher does not help as much as we'd like and we have troubleshot just about everything we can think of with our experience.    Any input would be appreciated, thanks.
  24. Hello guys, Newbie on this site. I am looking for a run time free Allen Bradley .NET driver. Basically a library (.dll) that implements communication protocols to Allen Bradley PLC's ( CIP, Ethernet/IP, etc.). Can someone point me in the right direction please ?.
  25. I have just started programming PLC's and the first thing I have came up against is a 4-20ma signal to a analog card for a Turbidity meter. The problem I am having is the reading is very erratic. Is there any way to get it from jumping around so much?