AB PLC 指令集 目 录 一、位指令....................................................................................................................................... 3 1.检查是否闭合指令(XIC) ...................................................................................................... 3 2.检查是否断开指令(XIO) ...................................................................................................... 3 3.输出激励指令(OTE) ............................................................................................................. 3 4.输出锁存指令(OTL) ............................................................................................................. 3 5.输出解锁存指令(OUT) ......................................................................................................... 4 6.一次响应指令(ONS) ............................................................................................................. 4 7.上升沿触发指令(OSR) ......................................................................................................... 4 8.下降沿触发指令(OSF) .......................................................................................................... 4 二、计时器和计数器指令 ............................................................................................................... 5 1.延时导通计时器指令(TON) ................................................................................................. 5 2.延时断开计时器指令(TOF).................................................................................................. 6 3.保持型计时器 RTO ............................................................................................................... 7 4.加计数指令（CTU） ............................................................................................................ 7 5.减计数指令（CTD） ...................................................................
