描述
输入电路中设有RC滤波电路，以防止由于输入触点抖动或外部干扰脉冲引起错误的输入信号。滤波电路延迟时间的典型值为10～20ms(信号上升沿)和20～50ms(信号下降沿)，输入电流约5～10mA.
ABB 57160001-AA S2 DSDI130 Digital Input Board
ABB 57160001-TP DSDX I/O BOARD
ABB 57310001-GP S2 DSPC157 MAIN COMPUTER BOARD
ABB 57310256-BA S2 DSPC153 MAIN COMPUTER BOARD
ABB 57330001-N S2 DSMC110 FLOPPY DISK CONTROLLER
ABB 57360001-AN S2 DSMB125 MEMORY BOARD
ABB 57360001-HG S2 DSMB127 MEMORY BOARD
ABB 57360001-U DSMB124 S2 MEMORY BOARD
ABB 57510001-AA S2 DSCA114 COMPUTER LINK BOARD
ABB DCS402.0025 DRIVE USD
