tunnysting

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Posts posted by tunnysting

  1. Posted

    Hello all, It's been a while since my last post and this one might be a bit vague. I'm pretty new to Mitsubishi, we are still,using IEC developer from I think v6 to v7.04. There are limits to online edits regarding the CPU memory, can these be overcome with a memory card? Can this be used just for the edits then removed from the CPU? Thanks in advance.

  7. Posted

    Thanks again Groo, After several hours changing/testing/breaking I understand a lot more, I just have to improve on my German now!

  8. Posted

    Thanks Groo. This could be a silly question but what is the relevance of the #? I've searched online but can't seem to get a specific answer.

  9. Posted

    Hi All, I'm struggling to get to grips with a bit of code written in STL, can anyone give me a quick overview of what is actually being done in network 4 in the following pics. Thanks in advance. plc_2.bmp

  11. Posted

    Hello all, just starting out finding a little about Siemens by downloading S7 LITE and was wondering if there are any sample programs available for this software? Searched but can't seem to find any. Thanks for your help.

  12. Posted

    Thanks for replies all, Veganic, I'm not 100% positive how RCDs work, I know the theory of difference between currents in N and L but we have RCDs supplying three phase motors (mennekes plug sockets from RS http://uk.rs-online.com/web/search/searchB...&R=0491204) with obviously no neutral don't these monitor current flowing in the earth circuit? Again, sorry for my naivety. Thanks

  14. Posted

    Have you had any experience of current flowing in a grounded circuit? In my previous job we had 100s maybe 1000s of devices with screen grounded at both ends with no problems on any circuit. What about VFD cables are these to be grounded at one ond only too? In what instance would a screen become a current carrying conductor unless under fault conditions? Wouldn't a screen carring current trip the RCD? Sorry if i sound naive. Thanks for reply.

  16. Posted

    Alright all, I've been lucky enough to get a new role in an engineering company working more with plcs. The only problem is I've never had any telemec experience having worked mainly with Rockwell and Siemens. I was just wondering if there are any pitfalls I should look out for. Is the code totally different? I've heard that there is some free software too is this the full package? Thanks in advance.

  18. Posted

    Cheers Bob, I have all the relevant software, the problem I have is that in controllogix I go online to the devicenet network via the network tree and select the devicenet card. On the SLC controlled machine we have inherited I can't get to see the specific cards in network tree just the processor (using RS 232 to go online). Do I have to connect to the network with a special card? Is the devicenet file used in a different way with SLCs? Thanks in advance.

  22. Posted · Edited by tunnysting

    Alright all, not sure if this is the right forum but I'll give it a shot. I've had some success displaying data from a logix 5000 on an excel spreadsheet. I would like to make this data look more user friendly in the form of a web page but I don't know where to start. Is there any software that I need to use? Can I still pull data straight from the PLC and display it? Any help appreciated. Cheers.