Omron FQM1-MMP21 用户手册

The System Setup contains software switches used to make initial settings
and other settings. As shown in Appendix C System Setup, Auxiliary Area
Allocations, and Built-in I/O Allocations, addresses (words and bits) are allo-
cated for settings in the System Setup. The addresses can normally be
ignored when making the settings, however, because the settings follow CX-
Programmer menus.

When the user writes to the Coordinator Module, the user program, System
Setup settings, other parameters, and part of the DM Area are automatically
backed up to flash memory.

The following flowchart shows the operation of the Coordinator Module. Pro-
gramming is executed before I/O is refreshed and peripherals are serviced.
This cycle is executed repeatedly.

Power ON

Startup 
initialization

• Initialize hardware memory 

and system work area.

• Detect connected Motion 

Control Modules.

• Clear I/O memory.

• Check user memory.

• Clear forced status, etc.

Common 
processing

• Read DIP switch settings.

• Check I/O bus.

• Check user program memory.

Program 
execution

• Operation processing: Execute the user programming.

• Error processing: Turn OFF outputs.

• After error: Clear I/O memory (unless a FALS instruction caused 

the error.)

I/O 
refreshing

Refresh built-in I/O.

Cyclic 
refreshing 
(See note.)

Exchange cyclic data with Motion Control Modules. (Refreshing is 
stopped if there is a bus error.)

Note: Cyclic refreshing occurs in PROGRAM mode as well.

Peripheral 
servicing

Perform the following servicing if any events have occurred.

• Motion Control Module event servicing

• Peripheral port servicing

• RS-232C port servicing

• RS-422A port servicing

Cycle 
time