Mitsubishi Electric MELSEC-Q Series - Precautions for Replacement of Parameter; Conversion from Anscpu to QCPU

7 REPLACEMENT OF PROGRAM
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7.3.1 Conversion from AnSCPU to QCPU
This section explains the parameter conversion upon replacement of the AnSCPU programs with the
QCPU.
<Compatibility>
: Common item between AnSCPU and QCPU, that can be converted directly.
: Item that requires re-setting after the conversion, since the functions/specifications are partially
different
: Item to be deleted, since there is no common item between the AnSCPU and QCPU.
Confirm the parameters after the conversion, and correct/re-set as required.
7.3 Precautions for Replacement of Parameter
Name
Compat-
ibility
Remarks
Memory capacity
Sequence program capacity No need to care about the program capacity.
Microcomputer program capacity  No microcomputer program is available.
Comment capacity Not required, since comments can be created for all devices.
File register capacity Resetting is required since the specifications are different.
PLC RAS setting
WDT setting This becomes default (200ms).
Operation mode when these is an error This becomes default (All stop).
Annunciator display mode  No compatible function is available.
PLC system setting
RUN - PAUSE contact Re-setting is required.
Output mode at STOP to RUN This becomes default (Output before STOP).
Data communications request batch
processing
Use COM instructions, or set the service processing setting in the PLC parameter.
Interrupt counter setting Re-setting is required.
I/O assignment Reviewing is required for the base unit with other than 8 slots.
Device setting
Number of device points  This resets to default.
Latch range
Latch relay L 
M and L are different devices.
"L" on the program is converted to "L".
Data register D 
Link relay B 
Link register W 
Low-speed timer
High-speed timer
Extension low-speed timer
Extension high-speed timer
Converted as one device.
Reviewing is required, since all the range from lowest device No. to highest device No. is
included in the latch range.
Retentive timer
Extension retentive timer
Converted as one device.
Reviewing is required, since all range from lowest device No. to highest device No. is
included in the latch range.
Counter
Extension counter
Converted as one device.
Reviewing is required, since the latch range covers all range from lowest device No. to
highest device No.
Network parameter
MELSECNET (II), /B 
Parameters are deleted, since the Q series CPU is not compatible with the MELSECNET
(II), /B.
MELSECNET/10 (H) 
For A2USCPU, converted to the MELSCECNET/10 mode.
Parameter re-setting is required for the AnS(H)CPU.
MELSECNET/MINI  Parameters are deleted, since the QCPU is not compatible with the MELSECNET/MINI.