johnny61

MrPLC Member
  • Content count

    29
  • Joined

  • Last visited

Community Reputation

0 Neutral

About johnny61

  • Rank
    Sparky

Profile Information

  • Country Singapore
  1. need help on 2 ladder diagram

    hi, thanks for the guide.I just manage to get it works thanks to TWControls.
  2. need help on 2 ladder diagram

    thanks for all the guide,advice and spending the time for helping me.
  3. need help on 2 ladder diagram

    my lecturer just told me that I can use the B3 function for my ladder diagram.I am very sorry that I is my mistake for causing the problem.How abou the Q3©ladder diagram?I have problem with the timer relay part.
  4. need help on 2 ladder diagram

    Since I am using the trial version of the PLC software so I can not use the XIO function.I will temporarily replace it with normally close relay. 2QC.doc
  5. need help on 2 ladder diagram

    hopefully this is correct.I still need to use the NEQ fuction ? 2QC.doc
  6. need help on 2 ladder diagram

    is the the way? 2QC.doc
  7. need help on 2 ladder diagram

    Here is the new ladder diagram.So now I have to replace the output for Y0,Y1 and Y2 with the OTL and OTU? 2QC.doc
  8. need help on 2 ladder diagram

    can you please guide me on using the b3 function,I would like to know how to use it. From what I found out that in plc: "Individual data bits can be accessed in the bit memory. These can be very useful when keeping track of internal states that do not directly relate to an output or input. The bit memory can be accessed with individual bits or with integer words" What I don't understand is how can I use the bit function it in application?Do I have to use instruction such as 'BSR' 'NEQ' such as the one used in the 'tank program' 'OSR' in order to use the bit function.
  9. need help on 2 ladder diagram

    thanks for the Q2c guide.I would like to know about the the Q3c ladder diagram which is about the automatic door control system.
  10. need help on 2 ladder diagram

    how about the q3c ladder diagram?The question never mention about the instruction so I can use any step or instruction to solve it.
  11. need help on 2 ladder diagram

    I did look at the panic modes example whch he use the B3:0 function.My friend said that we can only use the normal instruction such as timer,counter and relay to solve the problem.I will double check again with my lecturer this weekend.how about the Q3c ladder diagram?I think I miss the timer relay part?
  12. need help on 2 ladder diagram

    note:I forget to change the preset tiem for both timer to 6000 and 1800. Q2cupdate2.doc
  13. need help on 2 ladder diagram

    thanks for everyone help.Acually ,I am taking a part time PLC program.I just learn about PLC for 3 weeks and I can understand the basic instruction in PLC such as counter,timer.
  14. need help on 2 ladder diagram

    I am sorry that I forget to add description on my ladder diagram.I will add it.