drozdu

MrPLC Member
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About drozdu

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  • Birthday 04/26/84

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  • Country Poland
  1. TS Adapter short circuit

    That's how I connected it, so there shouldn't be potential difference :/ Besides - does laptop computers have any grounding? I mean, the AC adapter is grounded, but laptop itself is isolated from AC power line (there is only DC line going from AC adapter to laptop - correct me if I am wrong).
  2. TS Adapter short circuit

    Hello, Yesterday I was working with Siemens TS Adapter V5.2 for direct connection PC <-> PLC. I don't have a COM port in my laptop, therefore I was using PCMCIA to RS232 adapter. The TS adapter was connected to PLC (ES200S / IM151-7 CPU - there was profibus cable going from PLC to touch panel, so adapter was actually connected to profibus plug). When I was trying to connect the RS232 cable to COM port on my PCMCIA card I touched (by accident) pin no 5 with plug housing (cable was shielded). There was a short circuit with flash, smoke and so on. TS adapter was seriously damaged, the inner side of adapter was burned in places where it was touching MPI and COM cable shield, some parts on PCB were burned too. Does anyone have idea why the short circuit current was so large? (Just don't tell me: Because resistance was low ;) ) I enclose the circuit diagram of TS adapter, which I have found in siemens manuals. Best regards, Bartek
  3. Strange situation in PLC Q02

    Ok, problem was solved :) Set and reset instruction was executed at the same time for M2500 and that was the cause the problem. Thanks for help!! Regards, Bartek
  4. Strange situation in PLC Q02

    M1 is for some kind of use/pass operation. When M1 is off machine is in the pass mode. M5162 is required in both kinds of operation, that's why in the first line M1 is normally open and in the last line it is normally closed. Condition for turning on M5162 (in pass mode) are like this: (B981 is on) AND (M1 is off) AND (L1071 is on) AND ((M2500 is off) OR (T205 is on) OR (M2501 is off)) According to the device state displayed in GX Developer, all conditions are met, but M5162 is still off
  5. Strange situation in PLC Q02

    Hello, Recently I came across a strange problem, in attachment file I enclose the screenshot from GX Developer. Does anyone have any idea why B980 is turned on and M5162 is not ?? M2500 and M2501 are turned on and off by SET/RESET commands. Perhaps this might be the reason of the problem, but I'm not sure. Best regards, Drozdu
  6. Hello, I'm desperately seeking PL7-2 program (for TSX 17-20 PLC) All the versions I could find in the internet are not working If anyone could send me this software I would be very very grateful. I would also appreciate any manuals concerning the program. My mail address is drozdoo(at)wp.pl BTW. I actually succeeded in installing one version, but then, after the program had been started, I got the error "NOT ALLOWED (insuff. rights)". Any idea what does in mean?? Thanks in advance! Bartek
  7. S7-300 & Lenze Servo

    Thanks for help, JesperMP. I've managed to get it moving Regards
  8. S7-300 & Lenze Servo

    First of all I'd like to say hello to everyone, as this is my first post on this forum ;) I need to connect S7-300 PLC with CPU 313C-2DP with Lenze EVS9322-EP Servo. Connection has to be established on Profibus-DP network. The problem is that I have never worked with Profibus network (actually I'm a student, I have only some basic knowledge about PLC programming) and I completely don't know what should I start with. I think I need some programming manual for S7-300. Unfortunately I haven't found anything on Siemens support page (perhaps I haven't searched good enough ). I would be very grateful for any help (i.e. web address for programing manuals, etc.) drozdu PS.1 In my university I'm going to attend the course "Industrial computer networks"... PS.2 ...It starts in october