描述
PLC系统的通信网络中，上级的网络通信速率应大于1Mbps，通信负荷不大于60%。PLC系统的通信网络主要形式有下列几种形式：1）PC为主站，多台同型号PLC为从站，组成简易PLC网络；2）1台PLC为主站，其他同型号PLC为从站，构成主从式PLC网络；3）PLC网络通过特定网络接口连接到大型DCS中作为DCS的子网；4）专用PLC网络（各厂商的专用PLC通信网络）。
National Instruments PCI-MIO-16E-1 (6070E) NI DAQ Card
National Instruments USB-8473 High-Speed CAN Interface
NATIONAL INSTRUMENTS SC-2070 INTERFACE UNIT
National Instruments NI cFP-AIO-610 Module
National Instruments PCI-GPIB IEEE 488.2 DAQ Card
National Instruments NI PCI-GPIB IEEE 488.2 Card.Tested
NATIONAL INSTRUMENTS BNC-2110 SHIELDED CONNECTOR BLOCK
National Instruments PCI-6023E
National Instruments PCI-GPIB IEEE 488 Card “Tested”
National Instruments NI cDAQ-9172 8-Slot USB Chassis
National Instruments PXI-1411 Frame Grabber
National Instruments NI PXI-1000B Embedded Computer
National Instruments CPCI-GPIB Card
