T J SHARON

MrPLC Member
 View profile  See their activity

  • Content count

    52

  • Joined

  • Last visited

Posts posted by T J SHARON

  1. Posted · Edited by T J SHARON

    hi all, 

    I am using SCU32 ( unit1, port2, 2wire and termination OFF)  to get the RS485 data strings from the compass with setting 19200bps, 8 databit, 1 stop bit &  No parity.

    I can send the TX string ( 01 03 00 01 00 03 54 0B)  from D100 memory and  write the Rx data to D2000 (01 03 06 xx xx yy yy zz zz CC CC).

    But the whenever the there is no RX data, The TXdata bounce back to RX. (refer to video, d100 is TX, D2000 is RX).

    I also tried wth SCU32 termination resistance ON. Same thing.

    I am not sure what is missing. Should i use different logical Port for TX and RX ? 

     

    EDITED:

    Just tried another scenarios

     1) removed the connector and tried , D2000 - was written the TX values

     2) Disable the RX  changing  LD from P_On to P_Off. D2000 - was written to #0000 0000 0000 0000 

    I am not sure what is  happening., Open connection also TX data bounce back to RX

     

    Appreciate all help

    Thanks a lot 

    WIRING.PNG

    video1.mp4

    prg1.PNG

    prg2.PNG

    scu-settings.png

  4. Posted

    hi Dan, 

    1) those are button switches in the control console.The reason added a switch to prevent someone accidently using potentiometer. 

    2) these are voltage signals.

    3) Pure voltage from PSU to the ADunit via push button and potentiometer 

    4) Currently i don't have have any screens. Just copied from the manual for future use.   but fluctuation reduced after i connected A5 & B5 to 0V.

    5) the values should be &0-4000 UINT. high count is only on open circuit condition. The values are accurate and stable at closed circuit.

    capture.png

    Capture1.PNG

  7. Posted · Edited by T J SHARON

    HI, 

    I still didnt manage to get it done. 

    The values are fluctuating ( like 6555**, FFF** etc) during open circuit and potentiometer is low resistance.

    And values remains 0 during open circuit and potentiometer at high resistance(no fluctuation).

     

    My 8 AD channels are sharing  power suppply.

    DO i need connect anything to AG terminals.

    Appreciate all  help and suggestions.

     

    thanks

     

     

    capture.png

  8. Posted · Edited by T J SHARON

    Hi, 

    Thanks a lot for the suggestions.

    1)For the ADs i used IO table to setup changed CH1-8 to enable and 0-10V in (All  voltage/current hardware dip switch set to  off). I am not sure whether any open circuit static V or anything like that. ( wiring attached, Blue color cable to 0V. A5 & B5 are NC).

    2) For the data writing issue, i checked the CPU1 side D100, very stable and no issue.  But  at CPU2 side, i can see the data fluctuation in D2000 . Seems like Before transferring is ok and d2000 is overwriting only after receiving.

    scu32_TEST.cxp

     

    capture.png

    Capture1.PNG

  9. Posted

    Hi, 

    I manged to establish the communication after adding a end code.

    Is there any problem if i use 'FF' as start code and FE as end code.?

    I can receive the data now.  but i have 2 issue now.

    1. After uploading program, need to power cycle the receiving SCU32 , then only 1534.06 works. Is it common or i miss something like restart bits? ( program remains same as previous posts)
    2. i am transmitting D100-108(D100 is DI, D101-d108 are AD) data to receiver's D2000-2008 memory (18bytes).  My analogue input  in TX side fluctuates from 0000 to 655XX if not powered, so the Received data in d2001 -d2008 follow that fluctuations. During this time some bits in  d2000  also activating, seems somthing is overriding my data.  is there any chance that d2001 data can override d2000?

    THANKS A LOT 

    T J SHARON

  10. Posted · Edited by T J SHARON

    thanks  a lot for the reply. 

    To have a better understanding, i am adding up some more info below.

    Surface rack - CPU1 ( CJ2M CPU13) + SCU32 (unit0 port1, 4 wire & terminating resistance on) 

    MCP RACK - CPU2 - CPU2 ( CJ2M CPU13) + SCU32 (unit1 port1,4 wire & terminating resistance on)

    Connection via 2m twister pair

    Wiring, setting and program as shown  in pic.

     

    SURFACE-NewProgram1-TXDU.pdf

    capture.png

    MCP1.PNG

    MCP2.png

    MCP3.PNG

    SURFACE_1.PNG

    SURFACE_2.png

    scu32_TEST.cxp

  11. Posted · Edited by T J SHARON

    hi , 

    i have some issue, I tried communication between two SCU32s. But the RXDU is not updating constantly.

    I have used the below ladder diagram. Is it correct? ( the note says NO of  A202.03  AND NC of n+9 .06, but ladder is different?) No i am confused.

    Also what is logical port  ( "3"in the control word#31120001 ) and what is the purpose.?

    Capture1.PNG

  22. Posted

    I  am using 2CPUs.  CPU1 is physically connected to ID231 , and CPU2 is connected OD232. I tried to connect them via serial comm ( CPU1 as master and CPU2 as slave) and connect laptop to CPU1 for programming. when I went online, CPU1 detects ID231 ( 0000) which is correct, but CPU2 detect also ID231 (0000) . i tried to  change manually the slot , but shown error while uploading.

    I connected laptop  to CPU2 and tried to get i/o info online,  then OD232 detected.

    Any idea why OD232 wasn't detected while  connecting CXONE to CPU1 and two CPUs are serially linked.

     

     

     

  24. Posted

    Hi all,

    My serial cable as attached pic.

    I used this program  as below. 

    But when i use simulator i can see hexa output in 3100 & 0000. But when i go online, i cant see the output on 3100.

    My objective of this project is to give some inputs in cpu and get the output from cpu2.?

    wiring.PNG

    prgm1.PNG

    prgm2.PNG