IEC104开发-2 lib60870-IEC 60870-5-101 / 104 协议对总查询的处理

1、描述

服务器端使用InterrogationHandler回调函数来处理Interrogation请求。根据QOI（询问限定符）的值，返回不同的信息对象。对于一个简单的系统，仅处理 总查询 请求就足够了（QOI = 20）。QOI值21-36用于询问组（1-16）。由从属实施者将信息对象分配给询问组。

服务器用ACT_CON响应响应来自客户端的ACTIVATION请求，然后是ASDU，其中ASDU包含代表站质询或COT的信息对象，其中CS101_COT_INTERROGATED_BY_STATION代表相应的质询组（例如，质询组1的CS101_COT_INTERROGATED_BY_GROUP_1）。发送完所有信息对象后，服务器必须发送初始查询命令消息，其中COT = CS101_COT_ACTIVATION_TERMINATION，以指示查询数据的传输已完成。

static bool
interrogationHandler(void* parameter, IMasterConnection connection, CS101_ASDU asdu, uint8_t qoi)
{
    printf("Received interrogation for group %i\n", qoi);
 
    if (qoi == 20) { /* only handle station interrogation */
 
        /*! 1、响应client的 CS101_COT_ACTIVATION 请求 */
        CS101_AppLayerParameters alParams = IMasterConnection_getApplicationLayerParameters(connection);
        IMasterConnection_sendACT_CON(connection, asdu, false);
 
        /* The CS101 specification only allows information objects without timestamp in GI responses */
        /*! 2、发送ASDU, 其中COT设置为CS101_COT_INTERROGATED_BY_STATION，从站总召 */
        /*!  以下用M_ME_NB_1（MeasuredValueScaled_create），创建三个点对数据，分别为（100，-1）,(101,23),(102,2300) */
        CS101_ASDU newAsdu = CS101_ASDU_create(alParams, false, CS101_COT_INTERROGATED_BY_STATION, 0, 1, false, false);
        InformationObject io = (InformationObject) MeasuredValueScaled_create(NULL, 100, -1, IEC60870_QUALITY_GOOD);
        CS101_ASDU_addInformationObject(newAsdu, io);
        CS101_ASDU_addInformationObject(newAsdu, (InformationObject)
            MeasuredValueScaled_create((MeasuredValueScaled) io, 101, 23, IEC60870_QUALITY_GOOD));
        CS101_ASDU_addInformationObject(newAsdu, (InformationObject)
            MeasuredValueScaled_create((MeasuredValueScaled) io, 102, 2300, IEC60870_QUALITY_GOOD));
        /*! 发送 三个M_ME_NB_1数据 */
        InformationObject_destroy(io);
        IMasterConnection_sendASDU(connection, newAsdu);
        CS101_ASDU_destroy(newAsdu);
        
        /*!  以下用M_SP_NA_1（SinglePointInformation_create），创建2个数据，分别为（104，true）,(104,false) */
        newAsdu = CS101_ASDU_create(alParams, false, CS101_COT_INTERROGATED_BY_STATION,
                    0, 1, false, false);
        io = (InformationObject) SinglePointInformation_create(NULL, 104, true, IEC60870_QUALITY_GOOD);
        CS101_ASDU_addInformationObject(newAsdu, io);
        CS101_ASDU_addInformationObject(newAsdu, (InformationObject) SinglePointInformation_create((SinglePointInformation) io, 105, false, IEC60870_QUALITY_GOOD));
        /*! 发送两个M_SP_NA_1数据 */        
        InformationObject_destroy(io);
        IMasterConnection_sendASDU(connection, newAsdu);
        CS101_ASDU_destroy(newAsdu);
 
        /*!  以下用M_SP_NA_1（SinglePointInformation_create），创建8个数据 */
        newAsdu = CS101_ASDU_create(alParams, true, CS101_COT_INTERROGATED_BY_STATION,
                0, 1, false, false);
        CS101_ASDU_addInformationObject(newAsdu, io = (InformationObject) SinglePointInformation_create(NULL, 300, true, IEC60870_QUALITY_GOOD));
        CS101_ASDU_addInformationObject(newAsdu, (InformationObject) SinglePointInformation_create((SinglePointInformation) io, 301, false, IEC60870_QUALITY_GOOD));
        CS101_ASDU_addInformationObject(newAsdu, (InformationObject) SinglePointInformation_create((SinglePointInformation) io, 302, true, IEC60870_QUALITY_GOOD));
        CS101_ASDU_addInformationObject(newAsdu, (InformationObject) SinglePointInformation_create((SinglePointInformation) io, 303, false, IEC60870_QUALITY_GOOD));
        CS101_ASDU_addInformationObject(newAsdu, (InformationObject) SinglePointInformation_create((SinglePointInformation) io, 304, true, IEC60870_QUALITY_GOOD));
        CS101_ASDU_addInformationObject(newAsdu, (InformationObject) SinglePointInformation_create((SinglePointInformation) io, 305, false, IEC60870_QUALITY_GOOD));
        CS101_ASDU_addInformationObject(newAsdu, (InformationObject) SinglePointInformation_create((SinglePointInformation) io, 306, true, IEC60870_QUALITY_GOOD));
        CS101_ASDU_addInformationObject(newAsdu, (InformationObject) SinglePointInformation_create((SinglePointInformation) io, 307, false, IEC60870_QUALITY_GOOD));
        
        /*!  发送8个数据 */
        InformationObject_destroy(io);
        IMasterConnection_sendASDU(connection, newAsdu);
        CS101_ASDU_destroy(newAsdu);
 
        /*! 增加其他响应数据*/
        
 
        /*! 结束响应必须发送 CS101_COT_ACTIVATION_TERMINATION */
        IMasterConnection_sendACT_TERM(connection, asdu);
    }
    else {
        IMasterConnection_sendACT_CON(connection, asdu, true);
    }
 
    return true;
}

本篇转自：https://blog.csdn.net/u010058695/article/details/116229429