Description
PLC的程序扫描原则,PLC先左后右,先上后下的步序语句逐句扫描。当指令涉及到输入、输出状态时,PLC从输入映象寄存器中“读入”对应输入映象寄存器的当前状态,然后,进行相应的运算,运算结果再存入元件映象寄存器中,对元件映象寄存器来说,每一个元件会随着程序执行过程而变化。
ABB DSQC-236G AXIS CONTROLLER BOARD, tested, warranty
ABB DSQC-236G AXIS CONTROLLER BOARD, tested, warranty
ABB DSQC-236G AXIS CONTROLLER BOARD, tested, warranty
SIEMENS 6SC6100-0NA11, tested warranty