Mitsubishi Electric MELSEC-A0J2H Series Handbook page 36

2
REPLACING THE CPU MODULE
Function Description
Changes (writes) the program
Write during RUN
while the CPU is in RUN.
Stores the contents of all the
devices to the memory cassette
or memory card when an error,
Status latch
etc. occurred and monitors the
stored data using the peripheral
devices.
Stores the data of the specified
devices at every specified interval
to the memory cassette or
Sampling trace memory card and monitors the
stored data using the peripheral
devices to confirm the modified
status of the device.
Separates the devices used by
the OUT instruction from the
Offline switch
operation processing of the
sequence program.
Examines the presence of an
Self-diagnostics
error, detects errors, stops the
function
CPU, etc.
2
- 7
: Usable : Usable, however, a section of the specifications, i.e. setting methods, is different × : Not used
A0J2HCPU QnUCPU
×
×
Precautions for replacement
Allocate memory for Write during RUN setting in
advance for QCPU (default: 500 steps).
QCPU does not have the status latch function.
Q00UJCPU does not have the sampling trace
function.
QCPU does not have the offline switch function.
The error codes differ between A0J2HCPU and
QCPU.
Reference
sections
Section
2.4.3
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