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Measurex 053629-00模块控制器
内部输入/输出字在07KR51-HSB内部，存在多个内部输入/输出字，用于管理主机和远程热备用中央单元之间的数据信息。例如，可以通过这些内部变量设置从一个热备用中央单元到另一个的内部参数。这些内部输入/输出字为%IW63.08至%IW63/15和%QW63.09至%QW63。15 1.4.3初始化热备用主中央单元开始同步，通过远程中央单元向热备用发送一个帧，远程中央单元的热备用循环在几个循环时间内自行调整，以与热备用主中心单元同步。热备用远程中央单元必须处于运行模式。同步可能需要几分钟的时间。同步完成后，主机和远程热备用中央单元中的位%O62.08设置为1，例如，该位%O62.08可用于主机和远程两个热备用中央机组，以启动程序操作，并带有JUMP功能块。在此同步阶段，热备用主中央单元执行自己的程序。主控和远程热备用中央单元中的程序可能不同。主控和远程热备用中央单元的周期时间必须精确设置为相同的值。两个热备用中央单元、主单元和远程单元在同一周期内从CS31总线读取所有数字和模拟输入。只有控制CS31总线的中央单元在CS31总线上分配数字和模拟输出。其他热备用中央单元的输出仅作为内部变量分配。
诊断和功能
CS31总线上的所有诊断在热备用中央单元、主单元和远程单元上都可用，如远程单元断开、短路输出等。如果热备用远程中央单元在一个周期内没有CS31总线的任何通信量，则热备用功能启动。这意味着热备用远程中央单元开始控制CS31总线上的输入/输出，将位%O62.08重置为0，并将位%O32.09设置为1，并根据当前程序的当前结果分配CS31总线的输出。如果热备用主中央单元出错，热备用远程中央单元将在最多3个周期内接管。这意味着热备用远程中央控制单元中的输入在刷新之前的三个周期内将保持相同的值。如果在CS31上管理输出的两个热备用中央单元（主控和远程）中的程序部分不同，则输出状态可能会出现中断。在发生冲突的情况下，就像CS31总线上的两个主控设备一样，先前在远程配置的热备用中央单元将切换到热备用远程中央单元，即使它在主控操作中。如果中央单元主机处于停止模式，CS31总线输出将重置为0。热备用功能未激活。在主控和远程热备用中央单元中，位%O62.08重置为0。如果中央单元主机再次处于RUN模式，则主机和远程热备用中央单元中的位%O62.08重置为1，循环时间同步，但主机和远程两个热备用中央机组中的变量值可能不同。如果热备用远程中央单元在一个周期内CS31总线上没有任何通信量，则热备用功能启动。这意味着热备用远程中央单元开始控制CS31总线上的输入/输出，将位%O62.08重置为0，并将位%O32.09设置为1，并根据当前程序的当前结果分配CS31总线的输出。如果在CS31上管理输出的两个热备用中央单元（主控和远程）中的程序部分不同，则输出状态可能会出现中断。
Internal input/output words
Inside the 07KR51-HSB, several internal input/output words exist for the management of data information between the both hot stand-by central units, master and remote. It is possible for example through these internal variables to set the internal parameters from one hot stand-by central unit to the other. These internal input/output words are %IW63.08 up to %IW63.15 and %QW63.08 up to %QW63.15 1.4.3 Initialization The hot stand-by master central unit starts synchronization, sends a frame to hot-stand-by remote central unit, the cycle in hot stand-by remote central unit is adjusted by itself on several cycles times to be synchronized with hot stand-by master central unit. The hot stand-by remote central unit has to be in RUN mode. The synchronization can take some minutes. When the synchronization is done, the bit %O62.08 is set to 1 in the both hot stand-by central units, master and remote, this bit %O62.08 can be used for example in the both hot stand-by central units, master and remote to start program operation, with JUMP function block. During this synchronization phase, the hot stand-by master central unit executes its own program. The program in both hot stand-by central units, master and remote can be different. The cycle times in the both hot stand-by central units, master and remote have to exactly set to the same value. The both hot stand-by central units, master and remote read all digital and analog inputs from CS31 bus in the same cycle time. Only the central unit, who controls the CS31 bus, assigns the digital and analog outputs on the CS31 bus. The outputs in the other hot stand-by central unit are only assigned as internal variables.
Diagnosis & functions
All diagnosis on CS31 bus are available on the both hot stand-by central units, master and remote like remote unit disconnected, short circuit outputs, etc... If the hot stand-by remote central unit does not any traffic on the CS31 bus during one cycle time, the hot stand-by functions start. That means that the hot stand-by remote central unit starts control of inputs/outputs on CS31 bus, reset the bit %O62.08 to 0 and set the bit %O62.09 to 1 and assigns the outputs on CS31 bus according to the current result of the present program. In case of an error in the hot stand-by master central unit, the hot stand-by remote central unit will take over within a maximum of 3 cycle times. That means that the inputs in the hot standby remote central unit will remain with the same value during three cycle times before being refreshed. If the part of program in the both hot stand-by central units, master and remote who manage the outputs on CS31 are different, it could happen a discontinuity in the status of outputs. In case of conflict, like two masters on CS31 bus, the hot stand-by central unit configured previously in remote will be switch in hot stand-by remote central unit even if it is in master operation. If the central unit master goes in STOP mode, the CS31 bus outputs are reset to 0. And the hot stand-by function is not activated. The bit %O62.08 is reset to 0 in the both hot stand-by central units, master and remote. If the central unit master is again in RUN mode, the bit %O62.08 is reset to 1 in the both hot stand-by central units, master and remote and the cycle times are synchronized but values of variables in the both hot stand-by central units, master and remote can be different. If the hot stand-by remote central unit does not any traffic on the CS31 bus during one cycle time, the hot stand-by functions start. That means that the hot stand-by remote central unit starts control of inputs/outputs on CS31 bus, reset the bit %O62.08 to 0 and set the bit %O62.09 to 1 and assigns the outputs on CS31 bus according to the current result of the present program. If the part of program in the both hot stand-by central units, master and remote who manage the outputs on CS31 are different, it could happen a discontinuity in the status of outputs.
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