Mitsubishi Electronics FX5 ユーザーズマニュアル

2  PROCESSING OF OPERATIONS ACCORDING TO CPU MODULE OPERATION STATUS

  

The CPU module has three operation statuses as follows:
 • RUN status
 • STOP status
 • Paused
Processing of operations on the CPU module in each status is explained below.

In the RUN mode, operations in the sequence program are executed repeatedly in order step 0

END (FEND) 

instruction

step 0.

■Output when CPU module enters RUN mode

Operation results are output after the sequence program is executed for the duration of one scan.
The device memory other than the output (Y) holds the state immediately before the RUN state. However, if device initial 
value is set up, this initial value is set.

■Processing time until start of operation

The processing time from the CPU module switching from STOP

RUN up to start of execution of operations in the sequence 

program fluctuates according to the system configuration and parameter settings. (Normally, this time is within one second.)

In the STOP status, execution of operations in the sequence program is stopped by the RUN/STOP/RESET switch or a 
remote stop. The CPU module also enters the STOP status when a stop error occurs.

■Output when CPU module enters STOP status

When the CPU module enters the STOP status, all output points (Y) turn OFF. For device memory other than outputs (Y), 
non-latch devices are cleared and latch devices are held. 
However, when SM8033 is on and CPU module switches RUN

STOP, it is possible to hold an output state and the current 

value of a device.

In a paused status, execution of operations in the sequence program is stopped after one scan execution but with outputs and 
device memory states held, by a remote pause.