slcman

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Posts posted by slcman

  5. Posted

    Hi all, I have intermittent problem with a ladder. I suppose I lost one shot bit in continuous task if two periodictask are called. My program have 1 continuous task and 2 sched. task (3ms and 500ms). The bigger one (500ms) have a hudge amount of math and scan time raise around 16ms when this task is executed. I leave a screen shot in my message, eject_cnt is incremented slowly. I was online and check auto_eject & auto_eject_osr bit. Both was off, when auto_eject turn on, machine didn't eject. I stop the machine (eject_cnt cannot be increment) and safe the ladder. The ejection never occur because auto_eject_osr bit NEVER go on. Also eject_cnt never reset. I make some check: - I didn't use osr[0].5 , auto_eject, auto_eject_osr twice in the program - All ladder is alway scan (not condition before jsr instruction) Any idea???

  6. Posted

    I'll check for SFB20, but something is strange; fault light is OFF! It's the reason why I didn't check for a fault and start to look for STOP instruction. thanks I'll check and leave the result

  8. Posted

    I suppose a hudge program in a S7-300 use stop command. How I can search a instruction in ladder with step 7? I would like to check the condition for stop the program. Thanks

  13. Posted

    It's look like a code problem. Maybe your move command is in a subroutine....did you call this subroutine? You can place a dummy coil for check if your rung is scanned: bst mov 9 N13:0 nxb ote b3:31/0 bnd *I suppose B3:31/0 is not used! If is used, use another coil. Like Leadcommander says, write 0 after the change. Here is a good rung to do that: EQU N13:0 N10:13 MOV 0 N713:0 [if you control tag = status tag, clear control tag] For more details we'll need your code.... godd luck

  16. Posted

    Mickey made a good job, but I just want to remind you if you didn't see plc in RSlink (rswho browser) maybe the baud rate if 9600. By default PIC driver install a 19200 baud rate comm. If you didn't have a native serial port, I can sugest to you a PCMCIA or ExpressCard with a serial port. It's work well. http://www.quatech.com/products/mobile_connectivity.php if you want to see it! TIP TO ALL -> 1747-UIC don't work at 9600 baud! I had this problem with a SLC fix unit with a HMI connected at 9600 baud. I had to use my old (and big) PIC module. Good luck!

  20. Posted

    Hi all, I have a plc (SLC 500 fixed unit) with bit S:1/14 set. This means Deny futur access, so I can't see the program because he's protected. For see it I need a offline copy. I respect that I don't want to found a way to see the ladder but I want to do a backup in case of defective plc....I can go online and upload but I can't save the project. When I'm online, notting appear in ladder windows. It is a way to save the project for redownload it in case of broken plc! thanks

  21. Posted

    I made a similar project with a 1762-IF4 analog input and E82-20 50 curent transducer to 4-20mA. Info available on this links: http://www.gavazzionline.com/pdf/E822050.pdf Another way is to use a allen bradley devicenet overload, it give you more info like curent for each phase, warning set point, trip curent, ect... But I think you can't use it with micrologix plateform.

  23. Posted

    Hi, I want to log a historic. The most recent event # was stored in n7:0, if a new event occur I want to put N7:0 in N7:1 and write the new event in n7:0. I want to log around 10 event (n7:0 to n7:9) So, I need a instruction similar to BSL put at world level. Any idea??? Thanks

  24. Posted

    Hi everyone, my problem is simple: I lost my activation disk, but my license is in my hard disk. So I lost a empty licence disk. But now I what to transfert my licence to my brand new laptop. I tried to do it with a normal 1.44disk but automation licence manager prompt a error message. My question: can I use normal 1.44 m disk for transfert my licence? I didn't any option in automation licence manager for create a disk for transfert licence. Thanks

  25. Posted

    You cannot do this with RS5000. Omron can do something you'll like: when you hit space bar when you are on a contact, software bring you to the coil (if coil exist), then if you hit space bar again, software bring you back to the original position. It's faster a little bit. But for RS5000, you must open a cross ref window. I resize my window for see crossref and ladder. But I need to crossref tag by tag.