Mitsubishi Electric MELSEC-Q Series User Manual page 228

APPENDICES
Number Name
SD220
SD221
SD222
SD223
LED display
SD224
Display indicator data
data
SD225
SD226
SD227
0: Automatic mode
SD240 Base mode
1: Detail mode
0: Basic only
No. of
1 to 4: No. of
SD241 expansion
bases
Base type
A/Q base
differentiation
SD242
differentiation 0: None
1: Q
SD243
No. of base slots No. of base slots
SD244
Loaded Loaded maximum I/O
SD250
maximum I/O No.
Number of modules
SD254
installed
SD255
MELSECNET/H
Informa-
SD256
information tion
from 1st
SD257
module
SD258
Number of points
SD290
allocated for X
Number of points
SD291
allocated for Y
Number of points
SD292
allocated for M
Number of points
SD293
Device
allocated for L
allocation
Number of points
SD294 (Same as
allocated for B
parameter
Number of points
contents)
SD295
allocated for F
Number of points
SD296
allocated for SB
Number of points
SD297
allocated for V
Number of points
SD298
allocated for S
App - 12
Special Register List (Continued)
Meaning
• Stores the message (16 characters of ASCII data) at error occurrence (including
annunciator ON).
SD220
SD221
SD222
SD223
SD224
SD225
SD226
SD227
The display device data at PRG CHK is not stored.
• Stores the base mode.
• Stores the maximum number of the expansion bases being installed.
expansion
bases
Fixed to 0
B is installed
• As shown above, each area stores the number of slots being installed.
• When SM250 goes from OFF to ON, the upper 2 digits of the final I/O number plus
1 of the modules loaded are stored as BIN values.
• Indicates the number of modules installed on MELSECNET/H.
I/O No. • MELSECNET/H I/O number of first module installed
Network No. • MELSECNET/H network number of first module installed
Group
• MELSECNET/H group number of first module installed
number
Station No. • MELSECNET/H station number of first module installed
• Stores the number of points currently set for X devices
• Stores the number of points currently set for Y devices
• Stores the number of points currently set for M devices
• Stores the number of points currently set for L devices
• Stores the number of points currently set for B devices
• Stores the number of points currently set for F devices
• Stores the number of points currently set for SB devices
• Stores the number of points currently set for V devices
• Stores the number of points currently set for S devices
Explanation
B15 to B8 B7
15th character from the right 16th character from the right
13th character from the right 14th character from the right
11th character from the right 12th character from the right
9th character from the right 10th character from the right
7th character from the right 8th character from the right
5th character from the right 6th character from the right
3rd character from the right 4th character from the right
1st character from the right 2nd character from the right
B4 B2 B1 B0
to
Main base
1st expansion
base
2nd expansion
base
4th expansion
base
B15 B12 B11 B8 B7
SD243 Expansion 3 Expansion 2 Expansion 1
SD244 Fixed to 0
to B0
When no expansion
to base is installed, the
value is fixed to 0.
B4 B3 B0
Main
Expansion 4
MELSEC-Q
Set by (When set)
S (When changed)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
App - 12