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8 COMMUNICATION WITH INTELLIGENT FUNCTION MODULE/SPECIAL
FUNCTION MODULE
8.3 Communication Between High Performance model QCPU and AnS Series Special
Function Modules
Communication method with special function
modules
Device initial value
4
FROM/TO instruction
Intelligent function module device
8.3.1 Communication using device initial value
8 - 7
The following methods enable the communication between High Performance
model QCPU and the special function modules compatible with AnS Series:
• Device initial value
• Intelligent function module device
• FROM/TO instruction
The following table shows the communication timing for the communication
methods with special function modules described above:
Power ON
—
4
—
REMARK
1: Indicates whether the data of the device initial value is stored in High
Performance model QCPU or in a special function module.
2: Represents the internal memory of High Performance model QCPU or a
memory card.
3: "Special" represents a special function module.
4: Represents the program using the intelligent function module device or the
FROM/TO instruction.
(1) Device initial value
The device initial value is used to designate the initial setting of the special
function module without using a program.
The designated device initial value is written from High Performance model
QCPU to the special function module when High Performance model QCPU is
turned ON, is reset, or is switched from STOP to RUN.
(2) Designation of the device initial value
In the device initial value setting of GX Developer, designate the special function
module device as the device of the device initial value.
REMARK
1) For the device initial value, see Section 10.13.2.
2) For the intelligent function module device, see Section 10.5.
Communication timing
High
Performance
Instruction
STOP
model QCPU
execution
RUN
reset
—
—
—
—
—
MELSEC-Q
Storage location
2
END
High
processing
Performance
Special
model QCPU
—
—
—
: Executable.
—: Not executable
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1
3
—
—
—
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