Справочник Пользователя для Mitsubishi Electronics FX5

1  PROGRAM EXECUTION

1.1  Scan Configuration

Execute I/O refresh before starting program operations.
 • Input ON/OFF data input from input module/intelligent function module to CPU module
 • Output ON/OFF data input from CPU module to output module/intelligent function module

When executing constant scan, I/O refresh is executed after the constant scan waiting time ends.

Step 0 of each program up to the END/FEND instruction is executed according to program settings. This program is called the 
"main routine." Main routine programs can be divided into subroutines. (Page 29 Subroutine program)

END processing involves the following processes:
 • Refreshing of network modules
 • Refreshing of intelligent function modules
 • Instruction termination processing
 • Device/label access service processing
 • Resetting of the watchdog timer
 • Self-diagnostic processing
 • Setting of values to special relays/special registers (set timing: when END processing is executed)