Veganic

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Posts posted by Veganic

  1. Posted

    What settings have you used?

    Type K or J thermocouple?

    Are you reading from buffer memory 5 to 8 or 9 to 12?

    Can you post some code?

     

    From the manual:

    Buffer Memory BFMs #9 to #12 and #17 to #20: Present temperature

    These BFMs store the present value of the input data. This value is stored in units of 0.1°C or 0.1°F,

    but the resolution is only 0.4°C or 0.72°F for Type K and 0.3°C or 0.54°F for Type J

     

    The manual for this one is actuall quite good.

  4. Posted

    18 hours ago, Crossbow said:

    I've worked with several safety controllers in my career.  Some involve networks and some don't.  Can't say one is any better than the other, except from the standpoint of the time to install, and cost of wire and conduit.

    Thanks.  Yes, I have seen distributed systems with remote intelligent units (ie networked), some that seem to be a ring configuration and some that seem to be star.

    All with pluses and minuses. 

     

  6. Posted

    Does anyone have any experience with programmable or networked safety circuits. Does anything stand out as better than the rest?

    I have some experience with a couple of options but don't want to muddy the waters by giving my opinions first.

     

  7. Posted

    I have the same issue.

     

    Trying to change the background colour on a GT2103 without having to change screen.

    Currently I just have copies of the same screen with different background colours and switch screens in the PLC as required.

     

  19. Posted

    Hello all,

     

    I'm using 

    I'm using QJC24SerialInverter_GW2_V100 library with GX works 2.

    When I use the function blocks for channel 2 all is well.

    When I use the function blocks for channel 1 I get an error which points to the following datatype in function block QJC24NoProtocolCh1_FR : CSET_C24_FR.

    I am assuming that this is a user defined datatype that should be in the library but I an at a loss to work out how to make it work.

     

    Has anyone successfully compiled this channel 1 function blocks?  How?

     

    Thanks.

  22. Posted

    I don't know if you have all finished with this thread but I'll add this. Both options are va5lid depending on other measures. You are arguing about the difference between SELV and PELV power supplies. The requirements for SELV are quite demanding in separation vof circuits. PELV poses risks of equipment damage. In ISO60204 I cannot find reference to SELV , only to PELV (possibly supplied by a SELV power supply). So does everyone using SELV used strict seperation of "high" voltage and control wiring? Everyone who doesn't is connecting one leg of the supply output to ground? Good, we can all be friends again. But please comments are welcome / abuse accepted. (The 60204 standard and use of SELV is the part I need to clarify.) Apologies if this has lots of typos. I'm on my phone as my antivirus is blocking this site.