Omron FQM1-MMP21, FQM1-CM001, FQM1-MMA21 Motion Control Modules, Section, I/O Memory System Setup

Motion Control Modules Section 4-2

I/O Memory

System Setup

Read/Write DM Area (D00000 to D32767)

Broadly speaking, the user program consists of a cyclic task and interrupt tasks, which are executed for interrupts. The cyclic task is executed every cycle. The user program is stored in RAM and flash memory. Data is not lost, therefore, even if the super capacitor backup time is exceeded.

I/O memory is the area accessed by the user program and the CX-Program- mer. Part of I/O Memory Area is cleared and part of it is retained when the power is turned OFF and ON again.

I/O memory is also divided into an area that exchanges data with other Motion Control Modules and an area that is used for internal processing.

The System Setup contains software switches used to make initial settings and other settings for the Motion Control Module. Addresses are allocated for the settings in the System Setup, but these addresses can normally be ignored when making the settings, because the settings follow CX-Program- mer menus.

The System Setup is stored in RAM and flash memory, so the data is not lost even if the super capacitor backup time is exceeded.

The Read/Write DM Area can be accessed from the user program.

D00000 to D29999 is cleared when the power is turned OFF and ON again. D30000 to D32767 is retained for a set period by the super capacitor. The data is lost when the super capacitor backup time has been exceeded.

4-2-3 Motion Control Module Operation

Operation between the Coordinator Module and the Motion Control Modules can be set to synchronous (“Sync”) or asynchronous (“Async”) modes using a setting in the System Setup of the Coordinator Module.

System Setup Using CX-Programmer

Tab page	Item	Settings
Module Settings	Synchronization between	• Sync Mode
	Modules	• ASync Mode

ASync Mode Operation In ASync Mode, scan processing by the Motion Control Modules is not syn- chronized with the Coordinator Module. Motion Control Module built-in I/O refreshing is executed within the scan cycle in the Motion Control Module. I/O refreshing with the Coordinator Module is determined by the Coordinator Module and is executed asynchronously to the Motion Control Module scan processing.

Synchronous Data Link Bit Area refreshing is not executed in ASync Mode.

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