Справочник Пользователя для Mitsubishi Electronics 700 Series

Fig 3.1 Operation Processings of Built-in PLC function

Sequence program operation processing

Step 0

to

Until execution of END instruction

Power on

I/O refresh processing

Initial processing

 I/O initialization
 Data memory initialization
 Self-diagnostic checks

END processing

 Self-diagnostic checks
 Updating of timer and counter present values
 and on/off of their contacts