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  • Hi,

    I have a one question. I use the modbus serial for comunication. It is script:

    #include <ModbusSlave.h>
    /* First step MBS: create an instance /
    ModbusSlave mbs;
    /
    slave registers */
    enum {

    MB_CTRL, /* Led control on, off or blink /
    MB_TIME, /
    blink time in milliseconds /
    MB_CNT, /
    count the number of blinks /
    MB_REGS /
    total number of registers on slave */

    };

    int regs[MB_REGS];
    int ledPin = 13;

    void setup()
    {

    /* the Modbus slave configuration parameters /
    const unsigned char SLAVE = 1;
    const long BAUD = 9600;
    const char PARITY = 'n';
    const char TXENPIN = 1;
    /
    Second step MBS: configure */
    mbs.configure(SLAVE,BAUD,PARITY,TXENPIN);
    pinMode(ledPin, OUTPUT);

    }

    void loop()

    {

    /* Third and las step MBS: update in loop*/

    mbs.update(regs, MB_REGS);

    if(regs[MB_CTRL]==1)

    {

    digitalWrite(ledPin,1);

    }

    else{

    digitalWrite(ledPin,0);

    }

    }


    But i want a blink effect in led and i modified the script:

    if(regs[MB_CTRL]==1)
    {
    digitalWrite(ledPin,1);
    delay(3000);
    digitalWrite(ledPin,0);
    delay(3000);
    }
    else{
    digitalWrite(ledPin,0);
    }
    }

    Well, when i set the bit 1, the led blink but it don't enter in the else.

    Anyone had the same problem with supervisory and script?

    tank's

    *sorry, my english is very weak.


  • Your question isn't really related to this forum. This is about Modbus4J, the Java library.


  • Sorry.
    Where I could enter this topic?

    tank's


  • Honestly, i have no idea.