NI PXIe-7976R控制模块
1.产 品 介 绍
品牌：NI
型号：NI PXIe-7976R
产品说明：控制模块
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-7976R控制模块当主设备和任何从设备之间的最大距离不超过4000英尺（200米）时，可以使用此方法。此图假设电缆质量良好，环境噪音适中。在菊花链或多点配置中，最多可使用RS-422连接8个从设备。RS-422线路必须包括握手，并使用“电缆和连接器规格”一节中规定的导线类型。NI PXIe-7976R下图显示了将Workmaster II或IBM-PS/2、Workmaster、IBM-AT/XT或兼容计算机连接到8线多点串行数据配置的Series 90 PLC的接线图和要求。Series 90-70串行端口的电缆连接器必须是直角连接器，以便模块上的铰链门正确关闭。请参阅表A-“连接器/电缆规格”。注意：此产品不再提供。本附录供已经使用此转换器的用户参考。我们建议将NI PXIe-7976R作为大多数应用的替代品（详见附录D）。本附录详细说明了90系列可编程逻辑控制器的RS-422/RS-485至RS-232转换器（NI PXIe-7976R。
This method can be used when the maximum distance between the master and any slave does not exceed 4000 feet (200 meters). This figure assumes good quality cables and a moderately noisy environment. A maximum of 8 slaves can be connected using RS-422 in a daisy chain or multidrop configuration. The RS-422 line must include handshaking and use wire type as specified in the “NI PXIe-7976RCable and Connector Specifications” section. The following illustrations shows wiring diagrams and requirements for connecting a Workmaster II or IBM-PS/2, Workmaster, IBM-AT/XT or compatible computer to Series 90 PLCs in an 8-wire multidrop, serial data configuration.The cable connector for the Series 90-70 serial port must be a right angle connector in order for the hinged door on the module to close properly. Refer to Table A-NI PXIe-7976R, “Connector/Cable Specification.”Note: This product is no longer available. This appendix is for reference for those already using this converter. We recommend the IC690ACC901 as a replacement for most applications (see Appendix D for details). This appendix provides a detailed description of the RS-422/RS-485 to RS-232 ConverterNI PXIe-7976R for the Series 90 Programmable Logic Controllers.
3.产 品 展 示
4.关 于 我 们
本篇文章出自瑞昌明盛自动化设备有限公司官网，转载请附上此链接:http://www.jiangxidcs.com
