panic mode

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Posts posted by panic mode

  1. Posted

    Just go to any computer or electronic store (Radio Shack, Best Buy...) and ask for USB to RS232 converter. The one with single COM output is ca $30. You can see the one I use on link bellow http://datataker.com/products/uc_232a.html panic mode

  2. Posted · Edited by panic mode

    That shouldn't be a problem... You can use Compatibility Wizard to install anything you want (it comes with XP, just check Help if not sure how to use it). Wizard will ask you what program you wish to install (just navigate to your CD drive and select Setup.exe or whatever you have) and what version of Windows would work for your software (Win95, Win98, Win2000 or NT4 with service pack your choice). Hope this helps, panic mode

  3. Posted · Edited by panic mode

    What are you actually doing? Do you know how to setup connection? Can you browse in RSLinx and see the PV as active node? What driver you are using and what are the settings? Is there anything else connected? What version of RS Linx and PanelBuilder you have? Since you are using PIC, check the ends of the ribon cable comming out of the PIC box. They can easily get damaged. panic mode

  6. Posted

    An HSRV module is SLC servo card (1746-HSRV). I didn't use one in a long time but I sure remember that it worked perfectly. If you need repeatability and accurate positioning, you definitelly need feedback (encoder or resolver would be perfect). If you have drifts despite feedback, problem is definitelly in the feedback. I would check wiring (always first thing to do). Make sure that terminations are clean and shield covers everything but some 1.5-2" of the end of the cable. Just few months ago I was troubleshooting "drifting system" and problem was that shield was removed for good 10" of the cable end wired to high speed counter card. Another thing to check is power for encoder. It better solid connections. Some systems are not monitoring feedback power and short interruptions will not create fault but the feedback reading (and positioning based on it) would drift. Example is 1394 servo drive from AB. So check the encoder power from power supply to encoder point by point and take scredriver in your own hand (don't rely on second person like electrician). If still doesn't work, try to use separate power supply for encoder and consider use of noise filter on the power line (even UPS, at least as a test measure). Besides wiring, check the mechanical connections and eventual play. Don't forget to check the motor cable (must be shielded as well) and grounding. I hope this helps panic mode

  7. Posted

    Well. I didn't use an analog module on Control Logix yet (didn't need one so far), but I do a lot of analogs on our testing equipment. Normally I would use single ended and as current loop 4-20mA. Current loop is less suspected to noise, interference and loss due cable length. Also unless you use 0-20mA you can detect broken wire or disconnected transmitter. If you are working with small signals (mV range) or require great precision, differential setup would be better choice. panic mode

  8. Posted

    This is not a fair poll. Since the question is about *favourite PV* and dosn't include criterias like price etc. PV1000 is a clear winner. It would be nice to see what is the product of choice (or brand) and what would they like to see changed in the future version(s). I've been using numerous brands and I still prefer AB touchscreens over competition, so here is my review: Allen Bradley: Supperior documentation and Support (sorry for all Japanese brands). You can quickly get all manuals, cable pinouts etc. from AB website. Good connectivity that can be done in seconds so I can focus on programming. I also *LOVE* pass-through programming. The development time is shorter due better software. This means user friendly, Windows look and feel and SINGLE FILE projects, which is great for version maintenance. Also you don't have to go through long process of starting the software and navigating to the file and folder using tiny "Open" dialog box - just use explorer to find your file and doubleclick on it like you always do. You can make *your* buttons and indicators *ANY* way you like (try this with Japanese products). Attributes can be changed for ANY part of ANY state of ANY object, you can embed bitmaps if you really want to, to give ANY look to ANY objects without lenghty workarounds and dirty work like overlaying etc. Simplicity in editing of object properties (just highlite attributes you like and use copy and paste, you can paste in Excel and edit if you like). Don't take me wrong, PVs are my favourite screens but they are not perfect. For example development software (PanelBuilder32) I just praised is lacking one *most basic feature* = CROSSREFERENCE! (Hey AB, can't you move a finger and have this FINALLY done?). Aslo upon download, PVs tend to evaluate the project for ages before starting application. This part should be done in PC before downloading. Mitsubishi: Software is darn nightmare. So are the manuals. So is the online support. So is the delivery (if they don't have it in stock, and they usually don't you'll have to wait for 3-4 months till they make it). Technical support is not too bad but is usually veeery slow unless you are Japaneese or at least you speak Japanese. With online support they tried to catch-up with competition but the thing is still far cry from being fast, friendly and usefull. The search engine is too slow and extremly inaccurate. Provided keywords are usually generating huge hit-lists and there are absolutelly no manuals for recent products. Received products are often outdated although I had to wait for weeks (and sometimes months) and they came straight from Mitsubishi (manuals, software and firmware). Omron: Software is as bad as the Mitsubishi counterpart but much less expencive. The online/phone technical support is worse as well but my distributor has great support and our local Omron rep is very helpfull. Prices are very good delivery is good. Advantech: Something I liked on EZ Touch is large and still inexpencive screens, quick downloading, ability to work online (this is cool!!!). However do not try this feature unless you are aware of consequences - there is no abilty TO SAVE those changes on your PC (you don't have backup and you cannot download same program to second unit) and there is no option to UPLOAD from screen. Hence, always work offline and then download. panic mode

  9. Posted

    I was using NT20 on CQM1H. I used to swap cable from PLC to NT20 untill I got USB > COM converter (few bucks) and problem was resolved. I could have both plugged at the same time. Hope this helps, Panic Mode

  10. Posted

    By 'hertz' and 'count' they mean same thing, which is number of pulses per second. In your case 50 kcps = 50kHz or 10x higher for C200HAlpha than for CPM2A. panic mode

  11. Posted

    Maybe you just didn't try hard enough... I used www.google.com to search for "A0J2" and found reference to manual IB-66594-A. After that I went to www.meau.com and selected: - download, - all technical manuals, - industrial controls, - PLC-A and got number of matches. Quick search on the page for "A0J2" using Ctrl+F broght me to IB-66594-A manual which shows dimensions and pinouts for the A0J2-S91. The whole research lasted less than 3 minutes... Also, you could call tech support at 1-800-950-7781. Regards, panic mode

  12. Posted

    i'm not sure what could this be used for but this is simpe code that should do what you are asking for: ld x0 pls m0 ; create pulse ld m0 inc d0 ; and use it to increment counter ld>= d0 k12 mov k0 d0 ; ensure counter rollover ld= d0 k1 out y0 ; on first pulse turn y0 ON etc. ld= d0 k3 out y1 ld= d0 k5 out y2 ld= d0 k7 out y3 ld= d0 k9 out y4 ld= d0 k11 out y5 panic mode