nileshsurya

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Everything posted by nileshsurya

  1. hi thr all PLC ppl i am talking about RSLOGIX5000 software. does anybody have idea how to delete a particular program from a task(for eg:- say Maintask) the delete option is simply greyed out and i cannot use it it wud b of gr8 help if anybody tells me a solution waiting for reply from all u experts Regards NileshSURYA
  2. hi there, will anybody please tell me the procedure to convert an allen bradley plc3 program logic to plc5 program logic it will be very helpful for me thanks in advance nilesh
  3. I have a Micrologix 1100 PLC which I have configured as a MODBUS RTU Master to communicate with Modbus Compatible feeder protection relays daisy chained using an appropriate cable and 1763-NC01 cable. There are about 8 feeder protection relays from which I am reading 20 integers each by sending messages on channel 0 and the function code is "Read Holding Registers" also I am sending a "Write multiple coils" message for each relay to start and stop it over modbus. This means I am sending in total 8 Read and 8 Write messages (Total 16) to communicate with those Feeder Protection relays. As far as Modbus polling is considered I am having no problem in polling the feeder relays, in read as well as write operations and I am able to do them, but not in a satisfactory way. The problem I am facing is that each message errors intermittently and gets done once only after is errors for say about 3-4 times, this is happening with each and every message. Ie:- it errors for 3-4 times and then again gets done and the cycle continues.( I am incrementing two counters for each message to count how many times its DN and ER bits fire to judge the message successful completion rate) This results that the data I am receiving is not received in proper timing and is generally slow updating due to those errors. As I watched the Scan time of the PLC it is about 2 miliseconds. This is too small as regards to modbus polling. I hope this errors can be controlled or minimized if I am able to set the polling interval of the Modbus messages(the same as we do in prosoft modbus modules), but micrologix 1100 modbus message setup does not seem to have such setting ( it only has slave timeout option, which is not of much use in this case). I also tried to employ some timing mechanism to fire the messages ( like the messages are fired sequentially one after other based on a timer) but this also doesn't seem to work, in this scenario all the messages error and no message gets done. Could anyone suggest me a solution to this problem it would be very helpful for me. Can I use the SVC Instruction to solve the purpose, could anyone explain me what it does exactly. Configuring channel 0 as Modbus Master gives two options in the Protocol control section, 1) InterChar timeout (x1ms) and 2) Pretransmit delay (x1ms), I reduced the errors by increasing the value of the 2nd option till 500 ms, but then I could not eliminate the errors totally or minimize them to a satisfactory level. Please could anyone help me or suggest a solution as it is very necessary for me to optimize the system Thanx in advance Nilesh Surya
  4. PLC MCC Pics

    Dear all, I managed to click some pics of a PLC controlled Low Voltage MCC panel made out of Allen Bradley PLC and electrical components,so i thought to share it with all you people,This panel is a MCC panel with almost 85-90% of its components from Allen Bradley / Rockwell Automation leaving some accessories and some components everything is an AB/RA device. I hope u enjoy it and gain some useful knowledge i have uploaded these pics on Flickr Photo Sharing service and giving here the URL Please do give a visit at this link http://www.flickr.com/photos/plcarena/ Do tell your comments bout this,will be uploading more pics soon Regards and Take care Nilesh
  5. Dear Friends This week I came to know about something which can be useful to you all people as well,so i thought that i should share this information with all you people I experienced some problems with a 1756-L61/B series controller, the program from the CPU is vanishing without any reason,first thought was there is some problem with the power supply and grounding to the Controller,so i checked if some problems were with grounding of the panel and found them ok,i redownloaded the program in the controller, this time it ran for 10hrs and again the program vanished,now this is happening every 5 to 8 HRs now,now that we had rectified the power supply problems and checked the grounding for the panel thoroughly,my next doubt was that of faulty hardware,but why the fault was the question,so i just logged on to Rockwell KnowledgeBase and there found out the Product Service Advisory released by Rockwell in May - 2007, This can be found out by clicking the link below http://rockwellautomation.custhelp.com/cgi...amp;p_topview=1 and http://rockwellautomation.custhelp.com/cgi...amp;p_topview=1 Click on the links above to access the two technotes which describe this issue in more detail,you must be logged in the KnowledgeBase to access these pages If you are unable to click the links above then log in to Rockwell Knowledgebase and search for two technotes numbered 40149 and 39980 respectively There is one survey tool given for download in the second technote,download and install in and check whether the hardware(if you have) with you is affected and comes under the service advisory or not.This PSA applies for products manufactured within a specified time period only and for specific models and not for all products The problem described is module shutdown due to erroneous data,but the problem i faced was that of the program wiping away,may be you ppl are facing some other similar problems,so it is advisable to check your control hardware with the tool. May be this program wiping away is not concerned with this advisory so i have to wait till i replace the CPU with a new one. I checked my controller with the tool and found it to be affected,whereas other control hardware was showing ok,we are now going for a CPU replace. Regards Nilesh Suryarao
  6. 1746-io12

    hi thr even i had got the same problem some time back,i had a SLC 5/05 system in hot backup config with flex io's as remote I/O, i had a doubt with the 1747-BSN module for whose slot the same error was coming,so i replaced the BSN with other BSN but still that error was coming,i scratched my head for about 3 days but could not find a solution. then one day i realized that the logical rack configuration in the BSN module dialog box was not done properly,so i corrected that config and redownloaded the program,it got corrected this way can you give more details of the system you are talking about,like system configuration,PLC logic program etc Regards Nilesh Suryarao
  7. Dear all PLC ppl, I have a SCADA terminal with RSView32 7.20 Runtime 300 license and RSLinx professional license loaded, it is facing very strange problem, when i start the SCADA the computer becomes very slow and the Startup graphic page comes up after 2-3 minutes,in between this time if i try to do some other operation on the PC then the PC hangs,if i dont do any operation and allow the SCADA to start then it starts but after a time delay as i have mentioned above,if i click again on some link then another 2-3 minutes the SCADA hangs. some more symptoms are a) i cannot see the value of system\user tag if i try to display it as a string b) no alarms are logged and displayed on the SCADA There is one issue of RSView32 not displaying system\user tag when it is run under a non-admin account under win XP,but i have made it sure that i am running the SCADA under admin account in win XP if i make some blank SCADA project then the same things happen as mentioned above,if i take the copy of SCADA on other machine then it works fine. so i am very sure it is some windows setting problem which i am not able to figure out, i have tried disabling the windows firewall and also i tried creating some other admin user account and running the SCADA from that account, i also tried uninstalling rsview32 and rslinx and then reinstalling it,but the result is same always. has anyone come across the same problem or does anybody has any idea what the possible solution will be,i would be very greatful if anybody helps me out Thanks in advance Nilesh Suryarao
  8. 1756-ENBT A Ethernet Card

    go to http://support.rockwellautomation.com/ControlFlash/ , download the desired firmware file which comes with a software called ControlFlash, you need to first register with the website to get to that page you have to update a 1756-enbt card which is a CLX series card. Empty a Chassis and place the two ENBT cards in the rack and remove all the other modules including the Processor,SRM modules if any. I am assuming that there is an IP address configured in both the ENBT cards,if there is no IP address configured then use the BOOTP Server to assign an IP address first, make sure you disable the "Obtain IP address from the BOOTP server" option in the module properties in RSLinx after you have assigned an IP address to both your modules. for eg i am assuming here now tht ur two modules have IP addresses as 192.168.0.10 and 192.168.0.20,just for explaination purpose Install the file downloaded from the rockwell website,it will install a utility called as Controlflash,open control flash and then follow the procedure given there. You can do like first select the 192.168.0.10 and browse through it to reach the 192.168.0.20 module and set it as target to update the firmware then you when this procedure finishes you can do the reverse thing like select the 192.168.0.20 and browse through it to reach the 192.168.0.10 and set it as target to update the firmware ***or one more method is that you place one ENBT module at a time in the rack and place one controller in the rack,connect to the serial port of the controller by using a CP3 cable,then reach to that module by bridging it through your controller,in this way you can update the firmware by the serial port,my suggestion is that you try to avoid this method as far as possible because updating through serial port is very slow and will make your updation procedure about 10 times slow thus increasing the risks involved in flashing the module,use this as a last resort to update your module**** ***always try to update the firmware throught the fastest possible communication network available with you*** but there are some things which have to be taken care while updating the firmware of any hardware 1) Make sure there is no power loss while performing firmware upgrade(using a UPS is a good thought) 2) Make sure there is no communication loss while performing a firmware upgrade (also there are more considerations but right now not in the scope of this discussion) If any of the above things happen then you could end up in bricking up your module and making it useless so take care of these simple things and HAPPY FLASHING Regards Nilesh Suryarao
  9. no other third party software installed,only software installed is rsv32 and rslinx the activation files here are of the new net based activation system based upon the factory talk activation concept,so no chance of rocksoft.ini interfering with the performance of rsv32 thnx for help dude still trying,will try till tomorrow after tht reinstall the OS Regards Nilesh Suryarao
  10. Reinstalling the OS is one thing which will make it work and i have kept it as the last resort,i think the root cause of the problem should be found out and i am gonna give it a try till my customer does not have any urgency, after that will reinstall the OS if i cannot find out the root cause. Regards Nilesh Suryarao
  11. VersaView/200R computer

    Hello GlennLee there is one method in the new factorytalk view studio to convert the *.mer runtime file to .med, please see the attached PDF document for more details and check whether it is useful to you or not,also notify me if u get successful in doing tht best of luck Regards Nilesh Suryarao mer_to_med_conversion.pdf
  12. RS 5000 Version Control

    just found out a good topic which is worth discussing in this thread its located in the Rockwell Automation Knowledge base titled "Using a 1784-CF64 Card with Logix Controllers to Load Applications and Firmware." Its ID is 34534 and prev TN# is G149027134 Take a look at it people if possible Regards Nilesh Surya
  13. RS 5000 Version Control

    One rule of the Logix Platform is that for PLC processors you have to use the same version of the software and the firmware,for eg if you have V13 firmware loaded in your Logix CPU then you should program it in RSLogix 5K V13 ,if firmware 15 then software RSLogix 5K V15 and so on You can upgrade the firmware with a utility called as ControlFlash from Rockwell which is downloadable from the Rockwell/Allen-Bradley website. Look for a processor/module specific download file and you are all set to upgrade the firmware of the CPU,but there are some precautions to be taken while performing a Firmware upgrade, the first and foremost precaution is that there should not be a power failure while doing a firmware upgrade,next precaution is that there should not be a communication failure while doing the upgrade or you may end up "BRICKING" your controller . I generally prefer to do a firmware upgrade with a UPS supply and through EtherNET as it is a fast procedure and generally gets completed within 2-3 minutes with less chances of failure,the upgradation of the PLC firmware through onboard serial ports found on CLX,FLX and CPLX should be avoided as the data transfer is very slow and may take sometimes upto half an hour which may increase the frustration in you and also there are more chances of the PLC getting Bricked( If ever you upgrade through the serial port then make sure your laptop/desktop doesn't go into Sleep mode as in some computers the serial port is shutoff when the computer goes into sleep mode which may trigger a communication failure) CompactLogix is nowadays a part of the Compact Machine solutions newly introduced by Rockwell and the version 16 includes many enhancements like AOI's , Drive faceplates etc which speed up your programming and minimize use of other extra softwares. So wish you a very happy Flashing Regards Nilesh Surya
  14. RSView32 Communication with UIC

    u mean that dropdown menu in channel editor? ya im selecting the same driver in the channel dropdown menu the one which i have configured in rslinx for SLC communication
  15. hello thr all PLC ppl i have a SLC 5/02 system to which i am communicating my PC via a 1747-UIC USB interface converter(as my PC has no COM port). I am able to go online to the SLC in RSLogix500 by using the UIC and it is operating normally,no problems with that point. But when i try to communicate my RSView32 SCADA which is on the same Computer i dont get any values of the SLC in the RSView32. I have properly made the Channel configuration and then Node configuration in RSView32. I use the direct driver for communication in the node editor of RSView32. I finish my configuration and then Run the SCADA to find that i am not getting any values in the SCADA. One of the common mistake that ppl make that they run RSLinx Lite which runs ur PLC program but not SCADA. But in my case i have RSLinx Gateway,so i think thats not the problem. I have RSLinx Classic Gateway ver 2.5. When i observed it carefully then i noticed that when i run the SCADA while loading any new graphic screen it shows momentarily the Animation on the graphics and then again greys out(the same what happens whn no communication is there). Then i configured a Local OPC topic for the SLC and tried to communicate it then also its showing the same results. i would be very helpful if anybody helps me out of this problem,it has become very urgent now thanks in advance Regards Nilesh
  16. RSView32 Communication with UIC

    i have already enabled the node
  17. RSView32 Communication with UIC

    yes i make it sure that i select the SLC by browsing it from the browse utility which is there in the node editor utility in the RSView32
  18. hello thr all plc experts i wanted to ask one question where can i get the source protection tool for rslogix version 16, actually i have some AOI's whose source i want to protect. cud anybody plz tell me where can i get it. it well be of very gr8 help thnx in advance Regards NileshSURYA
  19. can u give me the url for tht download of source protection tool, plz its urgent i will be very thnkful
  20. ya TWControls you are very much correct but if anybody has the same he can give it to me,im sure thr r no license or activation issues as this is a bundled software working with a valid activation which i have, so i think it wont be a problem in sharing tht well im waiting for a positive reply ASAP as its very urgent thnx in advance Regards Nileshsurya
  21. communication

    helo thr to communicate a CLX system with WW INOTUCH via RSLINX it is required to create an OPC topic in the RSLINX . go to OPC/DDE in RSLINX--> one browser will come up in that browser create a new OPC topic and make sure this new topic points to your CLX PLC. apply the changes done. then in WW INOTUCH create an access name as following:- node name = keep blank -- if you are using RSLINX on a local machine(this is recommended) or the name of the machine where RSLINX GATEWAY is installed application name = RSLINX topic name = the name of the OPC topic which you created in RSLINX the above explanation was for a standalone CLX PLC to communicate with INTOUCH if you are having a Redundant CLX PLC system then you will require the CONTROLLOGIX redundancy alias topic switcher , which is a small software which comes bundled with the firmware CD in your RSLOGIX bundle follow the same procedure for the redundant system but here you will create two OPC topics, one each for one CLX system. say you have created topics PLC_A and PLC_B. now go to OPC/DDE ----> ALIAS TOPICS in RSLINX and configure a new alias topic say PLC_SYSTEM add the two topics you have just created to the alias topic and make sure the check box "switch on command" is checked ,all other checkboxes(there are two more--i cant remember them) must be unchecked. now install the CLX redundancy alias topic switcher software as i told earlier open the Switcher software and here configure the three parameters as required one is the name of the alias topic(PLC_SYSTEM), second and third are the two OPC topics(PLC_A and PLC_B). make sure you activate the alias topic switcher ,there is one button to do this now in wonderware again you will do the same thing node name = keep blank -- if you are using RSLINX on a local machine(this is recommended) or the name of the machine where RSLINX GATEWAY is installed application name = RSLINX topic name = the name of the ALIAS topic which you created in RSLINX after this make sure you use this access name for all your tags and set the addresses properly for your tags do this and you are done NileshSURYA Sr. Project Engineer AB PLC PROGRAMMER nileshsuryarao@rediffmail.com Location :- MUMBAI
  22. quadruple redundancy in Controllogix

    hello thr all plc ppl well nothing is foolproof in this world if two processors can fail at same time then why not four plus there are some other issues also i would like to thank all you ppl for giving valuable comments to this post and help me(infact all viewing this post) in gaining knowledge hope this continues regards NILESHSURYA AB PLC PROGRAMMER
  23. hi thr all plc ppl i have one question consider the following system configuration:- i have two separate controllogix hot redundant systems on a single controlnet network(say these systems are A and B). i also have about ten I/O racks on the same controlnet. five of these I/O racks are controlled by "A" and five of these I/O racks are Controlled by "B". now i want follwing to happen: when both A and B are healthy then the control should be normal as specified above. But when A fails(i'm talking that when both primary and redundant of "A" fail) then i want that the control of the I/O racks controlled by "A" should pass on to "B" and now B should be the owner of all the ten racks, it would be better if the same works for vice-versa conditions also. u can say tht im talking about quadruple redundancy (4-CPU's redundant to each other) i have one possible solution in mind,plz listen this and give me any valuable comments and suggestions. suppose i declare these I/O racks for multiple owners. now when both A and B are working healthily the output status of the outputs should be updated from A to B continuously over controlnet CIP messaging. now when the controller goes into fault i will write the fault handler in A to send a system faulted bit or value to the controller B. now based upon this bit/value the controller B now stops updating the output status by the data coming from(CIP messaging) A and it now actively controls the output status on its own by running the process logic which is in its own memory. is this possible to do. and if it is possible so how do we approach further.we can have a nice debate on this topic . Are there any shortcomings in this system. i want suggestions and comments from all u plc experts. eagerly waiting for comments. thanks in advance Regards Nilesh Suryarao AB PLC Programmer
  24. quadruple redundancy in Controllogix

    ya contr_conn, i understand tht this does nt make any sense but the client is demanding this as one of the requirement. he is asking tht it would be better if we provide this system.thts why i thought why not explore this possibility but i would still like to know more about software redundancy used earlier (just 4 info) .where do i approach?? regards NILESHSURYA AB PLC PROGRAMMER
  25. quadruple redundancy in Controllogix

    hello TWCONTROLS I need this system coz its the requirement from my client, he has said tht ABB System can offer him the same thing so i thought why couldnt AB CLX give him the same. this way the topic was raised. actually i dont know anything bout (OLD) software redundancy using SSV/GSV and software switching, can anybody point some examples or give more info bout the same. it will be very helpful regards NILESHSURYA AB PLC PROGRAMMER