nileshsurya

i have heard tht there is an AUTO -I/O testing standard code for AUTO I/O testing for the PLC -5 platform does anybody have that or some documentation regarding that it would be of gr8 help thnx in advance Regards NileshSURYA

hi thr all plc ppl i want to design a system(infact 2 systems) where I/O redundancy is desired one is PLC -5 based(with 1771-series i/o's) and another is CLX based (CPU is L55) and with FLEX i/O's. i want to do something called as ONLINE AUTO -I/O testing software in the PLC logic does anybody has an Idea as to how to approach on this point in the PLC-5 as well as CLX system. if anybody has done this before and has a sample PLC ladder code or even some documentation regarding to that. it will be very thankful if i get help from all u guys also i would like to know if there is any method by which the same can be achieved without writing special ladder code(ie:through the use of some special hardware or so) waiting for reply from all u PLC guys Thnx in Advance Regards NileshSURYA

this post is just to revive this topic

hi thr all plc ppl i want to write a seqeunce of events(SOE ) logic in a CLX based system will anybody guide me as to how to approach it does anybody have a sample code to achieve this task it would be of great help thanks in advance waiting for reply Regards Nileshsurya

you need to increase the number of unconnected buffers which is by default 10 in a CLX CPU. you can increase this number upto 40 this is done by sending a generic CIP MSG to the CPU itself see the above technote also you cannot do produce-consume tags over etherNET/IP in a redundant system.so you have to use messaging only regards Nilesh"SURYA

hi thr all plc ppl i would also like to know whether i can use the NET-ENI module with th serial port of a ML1100 to convert it to ethernet actually i am lookin to achieve a redundant etherNET connection from a ML1100 ie:- one through its inbuilt ethernet port and other through the NET-ENI converted port. could anybody tell whether its possible also i would like to know that if this can be accomplished then whether messaging can be done through this NET-ENI converted ethernet port waiting for reply Regards Nileshsurya

hi thr all PLC ppl i have a controllogix hot standby system,and there are FLEX I/O's on controlNET using 1794-ACNR's there are some 4-5 racks i want to communicate this system to a DCS over MODBUS,with the CLX system acting as slave and the DCS acting as MASTER, i have idea that (maybe) the 1794-MVI module can be used to accomplish this task,but i dont know anything beyond that. can anybody guide me more in this topic,as to how to start off with this also it will be very helpful if anybody provides me some sample code or gives me links to some sample code waiting eagerly for reply thanks in advance Regards NileshSURYA PLC ENGINEER AA

hi thr all PLC experts recently i have been asked to provide a solution to the following desired system we have about 100 micrologix PLC's spread all over a city doing some individual processes(basically all are used for same application,say X) now my job is to gather data from all these PLC's to one central location on SCADA or some other interface daily. we can assume that the city has a radius of about 50-60 kms. i would like to ask you ppl wht will be the best scheme possible to make this thing work. i have one question in mind whether to go wireless or rely upon Public wired telephone network. also i would like to point out tht the data from these micrologix plc's is not much critical and is needed just for about 3-4 times a day. just for analysis purpose.so it should be a cost effective solution,without burining hole in my clients pocket i would also like to know about the details of these scheme, ie:-the part /catalog numbers for the devices required in this scheme whether AB has all the things required to acheive this purpose or will i need some third party devices to accomplish this. it will be very helpful to me if you guys provide me with your valuable comments and suggestions i am waiting for them Regards NileshSURYA AB PLC Programmer hi thr i would like to add that the micrologix PLC's can be ML1200 or the newly introduced ML1100 thanx NileshSURYA AB PLC PROGRAMMER

hi snerkel your idea is indeed very effective,but here i have a condition tht i should only use ML1200 or ML1100 series PLC's from AB regards NileshSURYA

helo paul it ur gettin error 686 on a panelview , then u should check for the following 1)make sure the baud rate matches,and all the other serial port settings match 2) check whether you have specified the correct node address in your panelview application, also the node name should be same as the name of your PLC/SLC/micrologix controller.if using point to point make the networking disabled. 3)make sure you have a correct cable and verify that the cable is working.(pinout for checking a cable can be found out in the PV300 micro manual ) if all these things are verified and found out to be ok then i dont think you will again get tht error unless your PV300 micro is faulty take a look at it Regards NileshSURYA Anita Automations

hi there all PLC experts im having a slc 5/3 cpu in a 4-slot chassis with 1747-bsn in slot-1(obviously its a hot backup system) my one PLC is running fine as primary but when i switch on the partner rack the CPU in partner rack goes into fault as soon as it is powered up.when i go online it gives error as 159H (some time out error) when i change the slot of the BSN from slot-1 to slot-2 the same thing happens but this time the error is 269H what can b the problem and its possible solution.its very urgent Waiting eagerly for reply from all u experts its veeeeery urgent thanx in Advance Regards NileshSURYA

hi TWcontrols tried wht u said just now works fine thnx for ur solution but why such a tedious procedure,isnt thr any other simpler alternative Regards NileshSURYA

hi there all PLC ppl i want to write a circular buffer logic in a CLX L-63 cpu. the basic concept is as follows there will be a buffer of 10 similar elements in the CLX processor these 10 buffers will serve the purpose of communicating data to different instances of HMI so when a request to read/write data comes from a HMI the data is loaded in the first element of the buffer and the buffer index is incremented by one. the increment is made to make the buffer ready if another instance of HMI demands the same or similar data.when this is done the buffer index is again incremented by one and this continues in a circular fashion i hope you all understand my point i will throw more light on this in tomorrows post but right now it wud b of gr8 help if anybody tells me how to approach to do this logic it is very important and urgent for me to get this logic done in a very short span of time, so i need help from all u PLC experts very urgently waiting for reply,which will be of gr8 help 2 me thanx in advance Regards Nilesh Surya AB PLC Programmer

i require the buffer because the buffer is required to give the data of some 150+ relays to the HMI through a common tag(which is naturally this buffer) as and when required dynamically. i hope u r getting my point sir so if HMI # 1 requests data of smart relay # 1 then it is supplied in bufer number 1 and the index is incremented. now if HMI # 2 requests data of SMART RELAY # 2 then it is given in buffer # 2 and so on hope ur gettin it sir regards Nilesh Surya

hi thr all plc ppl i have a ControlLOGIX L63 processor with 8mb ram i want to use the rs232 port on the CPU for modbus communications to DCS. i would like to know what all things are to be done to do this. is it necessary to write any special logic in the PLC to perform this function also can sumbudy tell me how modbus data is mapped in controllogix processor what ladder exactly has to be written for this purpose if anybody has some nice tutorial on this or can tell me the URL of the tutorial,then it would be of gr8 help also i would like to know how to program a msg instruction to pass on the data from one CLX processor to another via ENBT module (EtherNET / IP ) it would be of gr8 help if anybody can tell me this Thanx in advance Regards NileshSURYA

hi thr contr_conn iam getting that lot of minor errors when the program modbusslave.acd is run getting a lot of minor errors will force my cpu into halt the periodic task in my modbus program executes every 9ms if i increase that period more than that of my continouous task execution period then will i still get those minor errors? is there any alternative ladder code to accomplish this task,it wud b of gr8 help,if u suggest me to it i need some help and comments regarding this,it will be of very much help and i will be very gr8 ful to you.i will request you to try that modbusslave.acd file from your side if it is possible for you. it will be of gr8 help. eagerly waiting for ur reply and valuable comments regards NileshSURYA

hi thr Contr_Conn i have tried the modbus slave program given in the samples folder of rslogix5k i have included it as a periodic task in my program with the interval of 9 ms i tested the same modbus communication with modbus simulator (modscan32) i faced some problems of modbus query received an invalid response,modbus message timeout etc etc but in my controlLOGIX, a lot of minor faults are logged due to this periodic task (for eg :- in some 5 minutes the number of minor faults can go upto 50000, as seen in the project properties) the minor error is an arithmatic overflow i would like to ask whether these minor errors (though they not take the CLX into fault mode) can hamper the performance in long run(say several years) can i force off/or unconditionally unlatch the arithmetic overflow bit will this cause any further problem it would be of gr8 help if anybody tests the same program at your own side and let me know the observations,comments and suggestions made by you (the program can be found in the RSLOGIX5k samples folder as a file modbusslave.acd) waiting eagerly for reply thnx in advance regards NileshSURYA

hi thr all plc ppl i am very curious to ask one question which seems stupid at first the question is can a program which is currently residing in the PLC RAM be written into the EEPROM module of the same without using RSLOGIX software can i use a HMI such as PANELVIEW or SCADA RSView32 to perform this function is there any such method to accomplish this waiting desperately for answer is it possible,it will solve many problems Thanx in advance Regards NileshSURYA

just to revive this topic,im replying it does anybody has an answer to the query posted by me it wud b of gr8 help if anybody provides a ray of light in this matter,as it would solve my lot of problems regards Thanks in advance NileshSURYA

hi thr u all plc ppl i have two PLC 5/40 cpu's in hotbackup configuration on a DH+ network with BCM modules. the engineering station for those PLC's is a computer with a KT card and 6200 series software .. now sometimes while going online i get a error message something like HPLC is disconnected or shutdown and in the whoactive window i get ????? against the name of the CPU. when i cycle power the CPU the error goes but again it comes after sometime this error message i get sometimes only and not everytime can anybody guide me as to what could be the problem it will be of gr8 help if sumbudy replies soon thnx in advance Regards NileshSURYA

hi thr u all plc people after surfing the net for a long time i came to know bout some things there is one opc server called kepserver which can connect to various plc's like GE,AB,MITSUBISHI and many more now wht i ask is that can i use this KEPSERVER to communicate GE fanuc 90/30 series plc with my RSVIEW32 (ver 7.1 CPR 6). can i use the opc browser feature in RSVIEW32 and declare the KEPSERVER as LOCAL or REMOTE. i wud also like to ask whether if i will require RSLINX for this purpose or not any suggestions and comments from all u ppl will be of gr8 help looking forward for reply Reagrds NileshSURYA

hi thr all ppl one different question i have to ask to you all i have a GE logicmaster 90-30 series PLC with ethernet now i ask i that whether i can make it communicate with RSview32 through RSLinx(some kind of OPC,DDE,ODBC connectivity) i dont know anything bout GE plc's ,but i think that it can be done via OPC or some sort looking for reply from all you guys plz help me out Thanx in advance NileshSURYA

hi thr all ppl does anybody have the internal pinout configuration and other details for 1794-CE1/CE3 cable which is used to connect the LOCAL and LOCAL2 racks in flexlogix system it would be of gr8 help if anybody gives it,as i need it very much Thanx in advance NileshSURYA

hello thr all PLC PPL i have a plc-5/25 system with 13k of RAM (currently its running a program which is somewhere like 4.9k RAM) the PLC also has an 16K EEPROM module to load the program at powerup. now i have came across a very erratic problem i have updated the program in the PLC and when i try it to burn to the EEPROM i get the error Program too big or memory protection enabled. it does not allow the EEPROM to be updated now when i cycle power the processor,it again loads the old program from the EEPROM and all my changes are lost. so i have to download all the program again. this i have to do it every time now i ask is that whether the EEPROM module is defective.but then i think if it would have been defective then how come it would have loaded the old program to the PLC RAM at power-up. i have also seen in the processor status that memory protection is disabled i am thinkin of changing the module but then i would like to know from u ppl that whether some other reason can be there?? plz help me as i need a solution to it urgently Regards Thanx in advance NileshSURYA

hi thr u all PLC experts recently i have come across a project in which my client demands tht all the PLC programming be done in FBD the system is a FLEXLOGIX processor with 512k memory , local and local2 racks with some 322 DI/DO and some 25 AI/AO. we have done the programming in ladder and the total memory usage is some where around 224 kb which is some half of the total program memory of 448kb alloted as program memory in the flex CPU. now when we use FBD as programming language then the memory usage is a whopping 390 kb and yet a section of some 50 I/O's is yet to be programmed. now this is a great problem for us as we want the memory to be utilized only 50-60% even if FBD is to be used so i would like to know all the possible tips and suggestions from all ppl in reference to FBD programming as to how tht i can minimize the program size while using FBD. i would also like to know whether RSLOGIX 5K has a facility so that user-defined(or custom)FBD's can be developed. i am in a great problem so i would like to know tips and suggestions as soon as possible waitin for reply from u guys REGARDS NileshSurya