NI PXIe-8234卡件双输出模块
1.产 品 介 绍
品牌：NI
型号：NI PXIe-8234
产品说明：卡件双输出模块
优势：供应进口原装正品，专业停产配件。
快递方式：国内顺丰、德邦、京东快递包邮，按照实际报价货期发货
2.产 品 详 情 资 料：
NI PXIe-8234卡件双输出模块本附录描述了用于连接90系列协议（SNP）的90系列PLC的串行端口、转换器和电缆。本信息仅供参考，适用于需要不同于工厂提供电缆长度的应用的用户。RS-422接口90系列PLC系列产品与EIA RS-422规范兼容。RS-422驱动器和接收器用于在具有五个双绞线的单个电缆上使用多个驱动器/接收器组合来实现多个系统组件之间的通信。NI PXIe-8234主设备和任何从设备之间的电缆长度不能超过4000英尺（2.9米）。可以配置由八个驱动器和接收器组成的多点系统。NI PXIe-8234每个附加压降之间的最大共模电压为RS-422标准的+7伏至-7伏。驱动器输出必须能够将最小2 V转换为00欧姆。在高阻抗状态下，驱动器输出阻抗必须至少为20 K欧姆。接收器输入电阻为2 K欧姆或更大。接收器灵敏度为200毫伏。NI PXIe-8234
This appendix describes the serial port, converter, and cables used to connect Series 90 PLCs for Series 90 Protocol (SNP). NI PXIe-8234This information is included for reference and for those users who have applications that require cable lengths different than the factory-supplied cables.RS-422 Interface The Series 90 PLC family of products are compatible with EIA RS-422 specifications. NI PXIe-8234RS-422 drivers and receivers are utilized to accomplish communications between several system components using multiple driver/receiver combinations on a single cable with five twisted pairs. The cable length between master and any slave cannot exceed 4,000 (,29 meters) feet.A multi-drop system of eight drivers and receivers can be configured. The maximum common mode voltage between each additional drop is the RS-422 standard of +7 Volts to -7 Volts. The driver output must be capable of 2 V minimum into 00 ohms. The driver output impedance must be at least 20 K ohms in the high impedance state. The receiver input resistance is 2 K ohms or greater. Receiver sensitivity is 200 millivolt.NI PXIe-8234
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