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In my last plant, we used 100% Rockwell Allen Bradley PLC's. I was very familiar with replacing a SLC series with a 5000 series, a no brainer. Now I work in a foundry with 100% Mitsubishi A-series PLC's with a weird gateway coaxial loop communications that is way beyond it's service life. There is little no no support, and I have been tasked with updating it to something Ethernet based, and reliable. I would like to stick with Mitsubishi, for no other reason than to convert the code from the A series to the new series using my existing GX developer software. This is a running factory, no time to demo the old controls and spend weeks re-inventing the wheel with new Rockwell/Seimans/ect PLC's; plus I already have the software Despite a rather long learning curve, I've been getting comfortable using it. My question is: If you had to choose today what series to convert an entire plant, which would you go with, and why? Please keep in mind this is a foundry, its hot, dirty and nothing really needs to be high speed, or math intensive. I would like something easy to install, easy to expand, easy to use Mitsubishi HMI's and something the electricians can wire and repair (prefer screw terminals not spring terminals).

Hi, I am trying to connect a CP1L-E to a NB7W-TW01B via a 5 port Ethernet switch. I have communication from the laptop to the PLC and from the Laptop to the HMI. but it seems like the HMI and PLC aren't communicating with each other. The HMI will not control the PLC. I've tried everything I know to do with the communication settings and it still will not work. If anyone has any suggestions they would be much appreciated! thanks

Hello A-B Guru's, I have a small station with a Micrologix 1000 controller in it. Keep getting a "Major Halt Error S:1/13, Invalid STI interrupt set point. Refer to S:30." It is a very simple program, not using the STI instruction. Have a filter on the processor power. Nothing crazy going on, on the station, no big coils, etc. What can I do to prevent this fault from occurring? Can I add a line of code to always unlatch S:30? What should I do? Please help.

fx2n-48mr-001 problem. Prog E flashes.Run and BAT. V no light only the Power LED lits..any idea of this error code . what's the possible solution. .tnx

I am trying to set up communications between a Mitsubishi master profibus module and a Mentor dc drive using an SM Profibus DP-V1 module.. I am using GX configurator DP to set up the communications using the SM Profibus DP-V1 GSD file, but no matter what configuration I used on the master and slave setup i still have an alarm on the QJ71PB92V stating that the SM Profibus DP-V1 is transmitting a diagnostic message and the comms is shutting down. When I interrogate the SM Profibus DP-V1 I cant find any errors or messages. ANY IDEAS ON THE CORRECT SETUP?

Hi, again. (I'm getting good support!) Every time I write to PLC it is switched out of run mode. I use Remote Operation to try to switch back to run mode but I get blinking P.RUN indication and blinking RUN light on PLC. I have to cycle the power to get back to run mode. Can I switch to run remotely?

Hello, I am using R88D-KN08H-ML2 servo drive with R88M-K75030T-S motor. PLC is CJ2M-CPU35, with NCF71 position control unit. There are total of 6 axis and the one in question with above combination is giving me trouble, rest 5 work OK. I get Overload trip error even at 200% of torque. The motor doesn't move at all. After disconnecting motor power cable, it is possible to move the assembly by hand so nothing sems to be jammed or binding. Tried Auto-Tune, ended with successful completion (at least no errors etc). But scenario didn't change. Motor doesn't have brake, as per model number as well as physically no brake cable on motor. Since all other axes are moving, with similar setting, not sure what is going on here! Any parameters I can change? Any other way to check?

Hello: I am new to Connected Component Workbench and Ladder Logic. I am using a ladder with 2 direct contacts on the first rung in series - the first is a N/O switch and the second is a N/C switch how do I make the second direct contact represent a N/C switch. So that someone else looking at my program would know right off the second switch is a N/C switch. Thanks My program functions as it should but the ladder diagram looks like two N/O switches in series.

https://plus.google.com/u/0/collection/oCtiX To be continued...

Dear experts, I used this forum for help analyzing our PLC setup in the warehouse in 2013 and feedback from the experts here was very helpful. I would like to offer an engagement as freelancer on our project since we need to cut-out a system which runs out of maintenance in Dec 2016. Please see attachment for details and very happy to receive any questions. I hope this is not against the forum rules as I couldn't find a suitable forum "job offers". Kind regards, Gunter Senior PLC Engineer Japan.pdf

Hi all and nice to meet you here! I hope that someone with experience helps me and I hope in future to offer also my help to someone. I am having problem with a Mitsubishi plc with A2N (S1) cpu installed on a machinery. The machinery stayed 20 days switched off and with battery empty as I realised when switched on and the problems come out. I changed the battery but the problem didnt resolved. The plc gave error with stable error led and flashing run led on the cpu. Also an error led stable on a (double role) module of printer and ram. I have to say that I have never used GX developer environment before and it is my first contact with Mitsubishi plcs. Reading some manuals (found on the internet) and by using GX developer I read from plc the faults. Register D9008 was set at 12 error meaning MISSING END INS. I Followed the described flow charts from a2n manual for reseting faults but the situation was the same always as described above. I tried to read the program from plc and succeded to read it. It is a lader with about 6000 lines. Anyway I have no previous experience of the GX development environment but I tried to put the missing END in the program as sugested also by the flow chart in the manual. At this point I have to say that it was automatically added from gx developer as I can remeber from an appeared message. I verified also many times the program on gx developer with the plc and the only difference was that missing END at the last line of ladder program. Anyway I tried to write back to plc the program with correct end but it was not possible. I tried several times. The error mesages took with Gx developer was the following : "THE SAME T/C COIL EXISTS IN PROGRAM (MAIN) AND/OR PROGRAM (MAIN-SFC). THE VALUES ARE SET TO BE THE SAME AS IN THE FIRST FOUND T/C COILFROM THE TOP OF PROGRAM" "THERE IS A DEVICE IN THE PROGRAM (MAIN) THAT IS OUTSIDE OF THE RANGE. CHECK THE PROGRAM AND CORRECT THE DEVICE THAT IS OUTSIDE THE RANGE." Anyway I decided to delete the plc memory. After that the run was stop blinking and the error led went off. Only the error on the printer-ram module was on (This module was changed with a know functioning one witout any variation on behaviour). I thought that problem has gone now that the cpu is empty. I tried again to write the program to the plc but again i take the above mentioned messages. Now I have an empty plc and a program on the Gx developer that cannot be written to plc!!!!!!!!!!!!!!!!!!!!!!!!! I am desperate!!! I do not know how to proceed. I am not knowing the mitsubishi development environment. Other than Gx developer I tried to install the GX simulation but it not works to my computer. At this point I dont know even if the ladder program is somehow corrupted after the described above messages. I can sent the code (GX developer project) and any other information to someone expert, if necessary, to have an opinion. Please help!!! Let me know how to proceed!! I have to write back the code to plc !!!!! Thank you all in advance!! Now i realised that there is SFC that is my problem. Could someone help please? Big part of ladder is in yellow color. How can i proceed?

Hey guys, so for a while I've been wanting to get a little PLC for home that I can play with and just have some fun with. I don't know exactly what I will do with it, I mean I live in a 1 bedroom apartment in Minneapolis, so I don't exactly have a large workshop to set up projects, but maybe some home automation type stuff. I'll probably set up a little test board with din rail and terminals and just mess around with it when I get bored. Anyways... so I wasn't sure what to get. I've always liked Allen Bradley, but the licenses are so expensive, obviously. But now with my current job I have to take my laptop home in case someone needs support on one of our machines, so I have RSLogix5, 500 and 5000 software/licenses installed on my laptop, so I can just use that. So I was looking at my options. I was thinking about getting an Aurduino or Raspberry Pi, but I kind of wanted to stay with Allen Bradley since that is what I use at work, and I may as well learn as much as I can about that. Well anyways, 2 nights ago I had a few too many drinks after work and I was browsing eBay for used PLCs and I bid on/won a MicroLogix1000. It seemed like a good idea at the time, it says its fully functional, it has free shipping is only $85, and since I already have the software... So what are your guys' thoughts on the MicroLogix1000? To be specific, the one I bought was the: 1761-L32BWA MICROLOGIX-1000 Besides the software and the computer cable, is there anything else I will need? I don't need expansion cards with this, unless I want, because it has i/o built into the controller, correct? I will just need a 120VAC and 24VDC power supply? Thanks!

I am trying to find a way to do a "batch monitor of Global Labels" in Mitsubishi GX Works2 Software. I can monitor Device/Buffer Memory Batch but can't find a way to monitor all Global Label's status online? Can anybody help me on this?

Hi, I am looking at options for integrating MATLAB/Simulink with Q-series PLC (Q04UDE) for hardware-in-the-loop simulations. I would like to have a Simulink model send speed/torque setpoints to the PLC and have measured values feedback from the PLC to the model. I know this can be done via OPC but I think the update rate may too slow for our purposes (I would ideally like to have <100ms update rate). Also, I saw Simulink have a toolbox for converting their models to PLC code, but they don't seem to support Mitsubishi PLCs. Anyone have any ideas on how this can be done? Thanks, Darren

Dear Sirs/Madams, I am studying to connect between GOT1565 and Microcomputer/PC via RS232 However, I only see the documentation for GT-A900 and GT-F900 So, I'm wan to ask you: Can GT1565 connect with Microcomputer/PC via RS232? Who did it? can you help me? Thanks so much!

Dear Experts; I have already install a 10 slot chassis in a system. Now for the further process i need to add 5 slot expansion chassis for further I/O modules. I have now 5 slot expansion chassis part number IC693CHS398. But when i configure the hardware by using LM90 software i have not seen the option of expansion chassis. Image are attached. Please guide me how i install or cofigure the expansion chassis ? Regards

Hi All, I have problem about programming serial module Mitsubishi PLC using QJ71C24N. If I unconnect the cable from the module and connect again it show SIO error and the communication become lost or not sending data again. so i have to restart the PLC to make it normal again. Any other solution for solve this error without restart the PLC? Thanks Husanto

Hi all, Im trying to figure out how to create non-volatile memory tags in GX Works 2 (using a FX3U controller), so that the values stored in the D registers won't keep zeroing out every time the controller powers down. Does anyone have any helpful tips on how this is done? Thanks

I need to replace existing encoder with quadrature output which is failing. We need to have minimum measuring distance of 60 inches. The encoder installed by manufacturer is Temposonics R-series RHS0650UMSO1Q1AC10 The resolution can be lower than the current encoder, probably 500 counts/inch or higher would be OK. Do you have any product that can be used? I was thinking about string encoder but I am open to suggestions.

Hello! I need to count the number of pulses SM410. Use instructions Counter_M has no effect. How to count the number of pulses(100 mc)? My soft:GX Works2. My plc is L-series(L02SCPU). In FX series It works well.

Hi all! I need advice. I have Mitsubishi Q02UCPU with profibus module QJ71PB92V. I try to connect communication module from Balluff BNI PBS-507-000-Z011 via Profubus without success. Everytime I connect module, I see diagnostic alarm "The parameter transmitted by the master is incorrect". All settings were made by default. QJ71PB92V has 0 adress and Balluff BNI PBS-507-000-Z01 has 11. I connected this module to the Siemens CPU-315 and it is work correct. From this forum I see it is common error. What will be the next step to check or solve the problem? I am not profficient in Profibus networks, so I will be appreciate for any help!

Hi I have a scenario where I need to setup communication between a Mitsubishi L-series PLC to Schneider Modicon M580. I need to use the onboard ethernet port of the L-series PLC. The protocol I need to use, is Ethernet IP. (socket communication). Can someone please assist?

Can anyone help with a carwash program? I am currently a student and having a very hard time getting this to work. I am using GX2 software. Any help would be greatly appreciated. Jeff

Ken Roach already answered this question for MicroLogix 1200, I'm trying to find the same answer for MicroLogix 1000. DF1 half-duplex communication gets dropped with MicroLogix 1000 slaves. I monitored the data, and found the slaves stop sending ACK, and the master stops sending ENQ. Slaves still send valid responses, but these responses are ignored by master because the ACK is not present. Power cycle solves the problem, but that's a hassle to drive out to remote sites. Power cycle to master sometimes solves the problem, but not always. Messages are initiated by the master, not by the slaves. Rockwell support said the only solution is to cycle power. Ken's approach was to monitor CS0:17, if it changes issue an ACL command. See previous topic: http://forums.mrplc.com/index.php?showtopic=22686 Thank you!

Dear experts, I have been trying to flash parameter to QD75MH1 module from PLC. Every time I monitor the servo via GX-configurator QP, I find 0 error, 0 warning but in the history tab it shows "start not possible(108)". But when I did it by flashing the parameter by GX-Configurator QP(Specially invalidating forced stop option" it works fine and servo motor jogs. can anyone help me to write the forced stop value from PLC program?