/* HSMS-SS Passive open example */
    HsmsSsCommunicatorConfig config = new HsmsSsCommunicatorConfig();
    config.protocol(HsmsSsProtocol.PASSIVE);
    config.socketAddress(new InetSocketAddress("127.0.0.1", 5000));
    config.sessionId(10);
    config.isEquip(true);
    config.timeout().t3(45.0F);
    config.timeout().t6( 5.0F);
    config.timeout().t7(10.0F);
    config.timeout().t8( 6.0F);
    config.gem().mdln("MDLN-A");
    config.gem().softrev("000001");

    SecsCommunicator passive = HsmsSsCommunicator.open(config);

    /* HSMS-SS Active open example */
    HsmsSsCommunicatorConfig config = new HsmsSsCommunicatorConfig();
    config.protocol(HsmsSsProtocol.ACTIVE);
    config.socketAddress(new InetSocketAddress("127.0.0.1", 5000));
    config.sessionId(10);
    config.isEquip(false);
    config.timeout().t3(45.0F);
    config.timeout().t5(10.0F);
    config.timeout().t6( 5.0F);
    config.timeout().t8( 6.0F);

    SecsCommunicator active = HsmsSsCommunicator.open(config);

    /* SECS-I (onTcpIp) open example */
    Secs1OnTcpIpConfig config = new Secs1OnTcpIpConfig();
    config.socketAddress(new InetSocketAddress("127.0.0.1", 10000));
    config.deviceId(10);
    config.isMaster(true);
    config.isEquip(true);
    config.timeout().t1( 1.0F);
    config.timeout().t2(15.0F);
    config.timeout().t3(45.0F);
    config.timeout().t4(45.0F);
    config.retry(3);

    SecsCommunicator secs1 = Secs1OnTcpIpCommunicator.open(config);

    /* example */
    Secs2 secs2 = Secs2.list(               /* <L                       */
        Secs2.binary((byte)0x81)            /*   <B  0x81>              */
        , Secs2.int2(1001)                  /*   <I2 1001>              */
        , Secs2.ascii("error message")      /*   <A  "error message">   */
    );                                      /* >.                       */

    /* Send S5F1 W. example */
    Optional<SecsMessage> reply = passive.send(
        5           /* Stream-Number   */
        , 1         /* Function-Number */
        , true      /* W-Bit           */
        , secs2     /* SECS-II         */
    );

    /* Add-Listener example */
    active.addSecsMessageReceiveListener((SecsMessage msg) -> {

        int strm     = msg.getStream();     /* Stream-Number   */
        int func     = msg.getFunction();   /* Function-Number */
        boolean wbit = msg.wbit();          /* W-Bit           */
        Secs2 secs2  = msg.secs2();         /* SECS-II         */
    });

    /* example Receive Message */
    S5F1 W
    <L [3]
        <B  [1] 0x81>           /* ALCD (0, 0) */
        <I2 [1] 1001>           /* ALID (1, 0) */
        <A "error message">     /* ALTX (2)    */
    >. 

    byte   alcd = msg.secs2().getByte(0, 0);
    int    alid = msg.secs2().getInt(1, 0);
    String altx = msg.secs2().getAscii(2);

    Secs2 reply = Secs2.binary((byte)0x0);  /* <B 0x0> */

    active.send(
        primaryMsg  /* Primary-Message */
        , 5         /* Stream-Number   */
        , 2         /* Function-Number */
        , false     /* W-Bit           */
        , reply     /* Reply-SECS-II   */
    );

    SmlMessageParser parser = SmlMessageParser.getInstance();

    /* Send S1F1 W. example */
    SmlMessage primarySml = parser.parse(
        "S1F1 W."
    );

    active.send(primarySml);

    /* Send S1F2. example */
    SmlMessage replySml = parser.parse(
        "S1F2           " +
        "<L             " +
        "   <A 'MDLN-A'>" +
        "   <A '000001'>" +
        ">.             "
    );

    passive.send(primarySecsMsg, replySml);

    /* example */
    COMMACK commack = active.gem().s1f13();
    OFLACK  oflack  = active.gem().s1f15();
    ONLACK  onlack  = acitve.gem().s1f17();

    passive.gem().s1f14(primaryMsg, COMMACK.OK);
    passive.gem().s1f16(primaryMsg);
    passive.gem().s1f18(primaryMsg, ONLACK.OK);

    passive.gem().s5f2(primaryMsg);
    passive.gem().s6f4(primaryMsg);
    passive.gem().s9f1(referenceMsg);