Mitsubishi Electric MELSEC Q Series Reference Manual page 387

APPENDICES
Number Name Meaning
0: Automatic mode
SD240 Base mode
1: Detail mode
0: Main base only
Extension 1 to 7: Number of
SD241
stage number extension
base units
Base type
differentiation
0: QA
A/Q base installed
differentiation (A mode)
1: Q
installed
(Q mode)
Base type
Installed Q
differentiation
base
SD242 0: Base not
presence/
installed
absence
1: Q**B is installed
Base type
Installed Q
differentiation
Base
0: Base not
presence/
installed
absence
1: Q**B is installed
SD243
No. of base
No. of base slots
slots
SD244
Loaded Loaded maximum
SD250
maximum I/O I/O No.
App - 45
Special Register List (Continued)
• This register stores the base mode.
• This register stores the number of extension base units installed.
B7
Fixed to 0 to
B is
B is
B7
Fixed to 0
B7
Fixed to 0 to
B15
SD243
Extension 3 Extension 2 Extension 1
SD244 Extension 7 Extension 6 Extension 5 Extension 4
• The number of slots used is stored in the area corresponding to
each base unit as shown above.
• When SM250 is turned on, the first two digits of the number, which
are the last I/O number of the mounted modules plus 1, are stored
in binary format.
• The first two digits of the number, which are the last I/O number of
the mounted modules plus 1, are stored in binary format.
Explanation
B2 B1 B0
Basic base module
1st extension
base
2nd extension
base
Fixed to 0 when the
to
base is not installed.
7th extension
base
B2 B1 B0
to
Basic base module
1st extension
base
2nd extension
base
to
4th extension
base
B2 B1 B0
Basic base module
1st extension
base
2nd extension
Fixed to 0 when the
base
base is not installed.
to
7th extension
base
B12 B11 B8 B7 B4 B3
Main
Corresponding
Set by
ACPU
(When set)
D9
S (Initial) New
S (Initial) New
S (Initial) New
S (Initial) New
S (Initial) New
B0
S (Initial) New
S
(Request New
END)
S (Initial) New
MELSEC-Q
Corresponding
CPU
Qn(H)
QnPH
QnPRH
Rem
Q00J/Q00/Q01
QnU
Qn(H)
QnPH
QnPRH
QnU
Rem
Qn(H)
QnPH
QnPRH
Rem
Q00J/
Q00/Q01
QnU
Rem
App - 45