Omron FQM1-MMA21, FQM1-CM001, FQM1-MMP21 operation manual Outline, User Program, Memory

Coordinator Module Section 4-1

4-1 Coordinator Module

The FQM1 Coordinator Module and each Motion Control Module have sepa- rate ladder programming. Each Module independently processes the ladder programming, I/O, and peripheral servicing to achieve high-speed I/O response somewhat like a system of multiple CPU Units.

4-1-1 Outline

The Coordinator Module mainly manages FQM1 operation and performs peripheral servicing. It has 24 general-purpose I/O, a peripheral port, RS- 232C port, and RS-422 port. The following diagram shows the internal struc- ture of the Coordinator Module.

Coordinator Module

	User program
	Cyclic task
		Access
Automatic	I/O memory
backup
Flash memory	Auto-	PLC Set-
	matic	up and
	backup
		other pa-
		rameters

User Program

The CX-Programmer (see note) is used to create the user programs, which are transferred to the Coordinator Module via the peripheral port. The user programs includes a cyclic task, which is executed once per cycle, and inter- rupt tasks, which are executed at synchronous data refresh. The cyclic task is executed every cycle.

Instructions written in a program are executed in order from the beginning of the program, and these instructions are used to read from and write to I/O memory. Once the cyclic task has been completed, cyclic refreshing with the Motion Control Modules is executed, and then the cyclic task is executed again (cyclic scan method).

Note Install the FQM1 Patch Software for CX-Programmer Ver. 5.0. CX-Program- mer Ver. 4.0 or earlier cannot be used. Refer to 8-1CX-Programmerfor details.

I/O Memory

I/O memory is the RAM memory area accessed by the user programs. Part of I/O memory area is cleared and part of the memory area is retained when the power is turned OFF and ON again.

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

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