NI PXI-6143 PXI多功能I/O模块
品牌：NI
型号：NI PXI-6143 PXI多功能I/O模块
产品说明：模块控制器
NI PXI-6143 PXI多功能I/O模块中文资料：
NI PXI-6143 PXI多功能I/O模块这两个内置串行端口消除了CPU通过PLC背板访问串行端口的需要，从而提高了系统性能。这两个端口支持SNP/SNP-X主协议和从协议（请参阅第5-13页的“无中断SNP协议”）、RTU从协议（固件版本8.0及更高版本）和串行I/O功能（固件版本8.0及更高），允许您创建自定义串行输出。有关如何使用这些端口的说明，NI PXI-6143请参阅GFK-0582C或更高版本的Series 90 PLC串行通信用户手册。浮点数学所有Series 90-30 CPU都可以使用整数。（整数集由所有正整数和负整数组成，包括零。）浮点数学功能使CPU能够处理除整数之外的十进制数。它还提供三角、对数、指数和弧度转换功能。浮点数学也称为“实数”数学。由于内置了数学协处理器芯片，CPU352和CPU374始终具有基于硬件的浮点运算能力。NI PXI-6143
英文资料
These two builtin serial ports eliminate the need for the CPU to access serial ports across the PLC backplane, resulting in better system performance. These two ports support the SNP/SNP-X master and slave protocols (see “Breakfree SNP Protocol” on page 5-13.), RTU slave protocol (in Firmware Version 8.0 and later), and the Serial I/O feature (in Firmware Version 8.0 and later) that lets you create a custom serial output. Instructions on how to use these ports can be found in the Series 90 PLC Serial Communications User’s Manual, GFK-0582C or later. Floating-Point Math All Series 90-30 CPUs can work with integer numbers. (The set of integer numbers consists of all positive and negative whole numbers, including zero.) The floating-point math feature enables a CPU to work with decimal numbers in addition to integer numbers.It also provides trigonometric, logarithmic, exponential, and radian conversion functions. Floating-point math is also referred to as “real number” math. The CPU352 and CPU374 have always had hardware-based floating-point math capabilities due to the built-in math co-processor chip.NI PXI-6143
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