ABB CAI04FIM卡使用速度PLC工控卡件

ABB CAI04FIM卡使用速度PLC工控卡件在版本C和更高版本的模块上，SERDATOUT线由集电极开路驱动器驱动，该驱动器主动驱动低电平或进入高阻抗状态，依靠上拉电阻器使信号线变高。使用单个机箱时，将W13和W14留在连接到数据采集板的SCXI-1140上的位置a-B（出厂默认值）。在此配置中，跳线W13将必要的上拉电阻器连接到SERDATOUT线，模块将MISO驱动到SERDATUT。ABB CAI04FIM卡使用速度PLC工控卡件

ABB CAI04FIM卡使用速度PLC工控卡件On Revision C and later modules, the SERDATOUT line is driven by an open-collector driver, which is a driver that actively drives low or goes to a high-impedance state, relying on a pullup resistor to make the signal line go high. When using a single chassis, leave W13 and W14 in position A-B (factory default) on the SCXI-1140 that is connected to the data acquisition board. In this configuration, jumper W13 connects the necessary pullup resistor to the SERDATOUT line, and the module drives MISO to SERDATOUT.ABB CAI04FIM卡使用速度PLC工控卡件

来源：厦门兴锐达自动化设备有限公司