Chapter 4 CPU modules
4 CPU modules............................................................................................. 4-1
4.1 Performance specifications.....................................................................................4-1
4.2 Operation processing of CPU.................................................................................. 4-2
4.2.1 Operation method .................................................................................................. 4-2
4.2.2 The operation during momentary power failure..................................................... 4-3
4.2.3 Scan time............................................................................................................... 4-4
4.2.4 Watchdog timer...................................................................................................... 4-4
4.2.5 Timers .................................................................................................................... 4-5
4.2.6 Counter .................................................................................................................. 4-8
4.3 Program structure................................................................................................... 4-10
4.3.1 Classification of program .....................................................................................4-10
4.3.2 Processing method.............................................................................................. 4-10
4.3.3 Interrupt processing............................................................................................. 4-11
4.3.4 Error handling ......................................................................................................4-15
4.4 Operation mode ......................................................................................................4-16
4.4.1 RUN mode ...........................................................................................................4-16
4.4.2 Stop mode............................................................................................................ 4-17
4.4.3 PAUSE mode....................................................................................................... 4-18
4.4.4 DEBUG mode ......................................................................................................4-19
4.4.5 Operation mode change ...................................................................................... 4-20
4.5 Special functions of CPU module ......................................................................... 4-22
4.5.1
RTC (Real Time Clock) function .......................................................................... 4-22
4.5.2 Forced I/O setting ................................................................................................ 4-25
4.5.3 Program edit in RUN mode.................................................................................. 4-26
4.5.4 Self-diagnosis ...................................................................................................... 4-27
4.5.5 Direct I/O refresh.................................................................................................. 4-28
4.5.6 System error history.............................................................................................4-28
4.6 Memory configuration ............................................................................................ 4-29
4.6.1 Memory map of K200S / K300S.......................................................................... 4-29
4.6.2 The memory map of K1000S............................................................................... 4-30
4.7 Assign I/O address .................................................................................................4-31
4.8 Parts names............................................................................................................. 4-32
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