描述
并联输出通断状态完全相同的负载，可以并联后共用PLC的一个输出点（要考虑PLC输出点的负载驱动能力）。例如PLC控制的交通信灯，应方向（东与西对应、南与北对应）的灯通断规律完全相同，将对应的灯并联后可以节省一半的输出点
NATIONAL INSTRUMENT SCXI-1300 USPP SCXI1300
NATIONAL INSTRUMENT FP-TB-1 NSPP FPTB1
National Instruments Pci Gpib 778032-01
NATIONAL INSTRUMENT 185695A-01 NSFP 185695A01
National Instruments 181-7617-1C SCSI Card – ZX-Box Int
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National Instruments 182826C-01 NI PCMCIA-GPIB+ Card
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National Instruments 186736C-01 PCMCIA-GPIB Card
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National Instruments NI PCI-6024E DAQ BOARD
