Mitsubishi MELSEC QCPU User Manual

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MELSEC-Q/QnA
2 INSTRUCTION TABLES
2.5.21 Redundant system instructions (For Q4ARCPU)
Table 2.38 Redundant system instructions (For Q4ARCPU)
Category
Instruction
Symbols
Symbol Processing Details
Execution
Condition
Number of
Basic Steps
Subset
See for
Description
Operation
mode
setting
during
CPU start
up
S.STMODE
S.STMODE S1 S2
• Designates the operation mode at (S1)
whether to clear the Q4ARCPU devices
before startup or not to clear them
before startup when the power supply is
turned on for CPU startup.
9 10-2
Operation
mode
setting
instructions
during
CPU
switch
S.CGMODE
S.CGMODE S
• Designates the operation mode at (S1)
whether to clear the Q4ARCPU devices
before startup or not to clear them
before startup when control is switched
from the control system to the standby
system.
7 10-4
Data
tracking
S.TRUCK
S.TRUCK S
• Conducts device memory tracking in
accordance with the parameter block
data contents stored in the area starting
from the device designated by (S)
during END processing.
6 10-6
Buffer
memory
batch
refresh
S.SPREF
S.SPREF S
• Batch reads/writes the contents of
special function module buffer memory
in accordance with the contents of
parameter block data stored in the area
starting from the device designated by
(S).
6 10-10
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Mitsubishi MELSEC QCPU Specifications

General

Brand	Mitsubishi
Model	MELSEC QCPU
Category	Controller
Language	English