IS200ISBBG1AAB可编程控制器

产品标题: CC-TDIL51 51307083-175输入输出模块

型号： CC-TDIL51 51307083-175

品牌： GE

                                                                              产品详情资料：

COM1以9600波特运行RTU从属协议。2.一个编程器连接到COM1。程序员使用9600波特。3.CPU在COM1上安装SNP Slave，编程器通信正常。4.编程器将新配置存储到COM1。新配置将SNP从站的端口设置为4800波特（直到端口与编程器失去通信后才会生效）。5.当CPU失去与编程器的通信时，新配置生效。SNP从协议PACSystems CPU可以使用SNP从设备协议通过COM1或COM2与Machine Edition软件通信。CPU COM1作为RS-232数据通信设备（DCE）端口连接，可以使用直通电缆直接连接到运行Machine Edition或其他SNP主软件的PC的串行端口之一。CPU COM2连接RS-485。如果SNP主机没有RS-485端口，则需要RS-485/RS-232转换器。RX3i可以使用转换器IC690ACC901，该转换器使用串行端口的+5Vdc。RX7i CPU COM2不支持IC690ACC902，需要外部供电的转换器。PACSystems提供了SNP的无中断版本，因此SNP主机不需要发出中断信号作为SNP连接序列的一部分。然而，如果检测到中断信号，CPU通过重置协议以等待来自主机的另一个连接序列来适当地响应。PACSystems支持点对点连接（单主/单从）和多点连接（单个主/多从）。

                         产品英文详情料:

Example 1. COM1 is running RTU Slave protocol at 9600 baud. 2. A programmer is attached to COM1. The programmer is using 9600 baud. 3. The CPU installs SNP Slave on COM1 and the programmer communicates normally. 4. The programmer stores a new configuration to COM1. The new configuration sets the port for SNP Slave at 4800 baud (it will not take effect until the port loses communications with the programmer). 5. When the CPU loses communications with the programmer, the new configuration takes effect.SNP Slave Protocol PACSystems CPUs can communicate with Machine Edition software through either COM1 or COM2 using SNP slave protocol. CPU COM1 is wired as an RS-232 Data Communications Equipment (DCE) port, and can be connected directly using straight-through cable to one of the serial ports of a PC running Machine Edition or other SNP master software. CPU COM2 is wired for RS-485. If the SNP master does not have an RS-485 port, an RS-485/RS-232 converter is required. The RX3i can use converter IC690ACC901, which uses +5Vdc from the serial port. The RX7i CPU COM2 does not support IC690ACC901 and requires an externally powered converter. PACSystems provides the break free version of SNP, so that the SNP master does not need to issue a break signal as part of the SNP attach sequence. However, the CPU responds appropriately if a break signal is detected, by resetting the protocol to wait for another attach sequence from the master. PACSystems supports both point-to-point connections (single master/single slave) and multi-drop connections (single master/multiple slaves).

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