Flowserve 10 39 N R7自动化控制模块

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Rung#11：当ETH_READY被设置时，Modbus/TCP读取COMMREQ的CRS字被监控为状态1，表明读取COMMREQ已成功完成。CRS字变为1会设置线圈READ_SUCCESS。运行#12：当READ_SUCces和CH5_OPEN复位时，它会触发CLOSE_REQ，从而启用关闭Modbus/TCP连接COMMREQ的BLKMOV、MOVE和COMMREQ功能。CLOSE_REQ是一个单触发（正转换）线圈，当READ_SUCCESS从OFF转换为ON时激活一次。梯级#13：MOVE WORD功能将零移动到命令块中引用的CRS字（见梯级#9）。这将清除CRS字。该梯级还重置梯级#15中COMMREQ功能块的CLOSE_FLT输出线圈。梯级#14：BLKMV INT功能设置COMMREQ命令块内容。当这个梯级被激活时，常量操作数从指令中指示的地址开始移动到内存中。此Rung#15:COMMREQ功能块中的常量操作数有三个输入参数和一个输出参数。▪ IN字段指向命令块参数的起始位置（本例中为%R00301）。▪ COMMREQ功能块的SYSID字段定义了以太网接口的目标机架和插槽，以接收命令数据。此十六进制字值给出以太网接口模块的机架（高字节）和插槽（低字节）位置。▪ COMMREQ功能块的TASK字段指示指定机架和插槽要使用的邮箱任务ID。对于RX3i ETM001 Jx以太网接口，TASK必须始终设置为零。对于PACSystems CPU嵌入式以太网接口，TASK必须设置为65536（0x10000），以寻址CPU的以太网子板。▪ 如果出现阻止将命令块传送到以太网接口的问题，则FT输出（在本例中为CLOSE_FLT线圈通电）将打开（设置为1）。在这种情况下，其他状态指示器不会为此COMMREQ更新。
Rung # 11: When ETH_READY is set the CRS word for the Modbus/TCP Read COMMREQ is monitored for a status of 1, indicating that the Read COMMREQ completed successfully. The CRS word change to 1 sets coil READ_SUCCESS.Rung # 12: When READ_SUCCESS and CH5_OPEN a reset it triggers CLOSE_REQ, which enables execution of the BLKMOV, MOVE and COMMREQ functions for the Close Modbus/TCP Connection COMMREQ. CLOSE_REQ is a one-shot (Positive Transition) coil, activating once when READ_SUCCESS transitions from OFF to ON. Rung # 13: The MOVE WORD function moves a zero to the CRS word referenced in the Command Block (see rung #9). This clears the CRS word. This rung also resets the CLOSE_FLT output coil of the COMMREQ Function Block in rung #15.Rung # 14: The BLKMV INT functions set up the COMMREQ Command Block contents. When this rung is activated, the constant operands are moved into the memory beginning at the address indicated in the instruction. The constant operands in this Rung # 15: The COMMREQ Function Block has three input parameters and one output parameter. ▪ The IN field points to the starting location of the Command Block parameters (%R00301 in this example). ▪ The SYSID field of the COMMREQ Function Block defines the target rack and slot of the Ethernet interface to receive the command data. This hexadecimal word value gives the rack (high byte) and slot (low byte) location of the Ethernet interface module. ▪ The TASK field of the COMMREQ Function Block indicates which mailbox task ID to use for the specified rack and slot. For the RX3i ETM001-Jx Ethernet interfaces TASK must always be set to zero. For PACSystems CPU embedded Ethernet interface, TASK must be set to 65536 (0x10000) to address the CPU’s Ethernet daughterboard. ▪ The FT output (energizes the CLOSE_FLT coil in this example) is turned ON (set to 1) if there were problems preventing the delivery of the Command Block to the Ethernet interface. In this case, the other status indicators are not updated for this COMMREQ.
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