Mitsubishi Electric MELSEC iQ-R Series User Manual page 158

No. Name
SD243 No. of base slots
SD244
SD250 Loaded maximum I/
O
SD260 Number of points
assigned to bit
SD261
devices
SD262
SD263
SD264
SD265
SD266
SD267
SD268
SD269
SD270
SD271
SD272
SD273
SD274
SD275
SD276
SD277
SD280 Number of points
assigned to word
SD281
devices
SD282
SD283
SD284
SD285
SD288 Number of points
assigned to timer/
SD289
counter devices
SD290
SD291
SD292
SD293
SD294
SD295
SD296
SD297
SD298
SD299
APPX
156
Appendix 4 List of Special Register (SD) Areas
Description Details
No. of base slots The number of slots of the base unit, which is specified in "Base/Power/
Extension Cable Setting" in the [I/O Assignment] tab of "System
Parameter", is stored. When the number of slots of the base unit is not
specified, that of the base unit actually mounted is stored.
■SD243
b0 to b3: Main
b4 to b7: Extension 1
b8 to b11: Extension 2
b12 to b15: Extension 3
■SD244
b0 to b3: Extension 4
b4 to b7: Extension 5
b8 to b11: Extension 6
b12 to b15: Extension 7
Loaded maximum I/ The value obtained by dividing the last I/O number for an implemented
O number unit plus one by 16 is stored.
Example 1: Last I/O number 010FH
• SD250 = 0011H
Example 2: Last I/O number 0FFFH
• SD250 = 0100H
X (L) The number of points assigned to the X device is stored in 32 bits.
Fixed to 12288.
X (H)
Y (L) The number of points assigned to the Y device is stored in 32 bits.
Fixed to 12288.
Y (H)
M (L) The number of points assigned to the M device is stored in 32 bits.
Fixed to 0.
M (H)
B (L) The number of points assigned to the B device is stored in 32 bits.
Fixed to 0.
B (H)
SB (L) The number of points assigned to the SB device is stored in 32 bits.
Fixed to 8192.
SB (H)
F (L) The number of points assigned to the F device is stored in 32 bits.
Fixed to 0.
F (H)
V (L) The number of points assigned to the V device is stored in 32 bits.
Fixed to 0.
V (H)
L (L) The number of points assigned to the L device is stored in 32 bits.
Fixed to 0.
L (H)
S (L) The number of points assigned to the S device is stored in 32 bits.
Fixed to 0.
S (H)
D (L) The number of points assigned to the D device is stored in 32 bits.
Fixed to 0.
D (H)
W (L) The number of points assigned to the W device is stored in 32 bits.
Fixed to 8192.
W (H)
SW (L) The number of points assigned to the SW device is stored in 32 bits.
Fixed to 8192.
SW (H)
T (L) The number of points assigned to the T device is stored in 32 bits.
Fixed to 0.
T (H)
ST (L) The number of points assigned to the ST device is stored in 32 bits.
Fixed to 0.
ST (H)
C (L) The number of points assigned to the C device is stored in 32 bits.
Fixed to 0.
C (H)
LT (L) The number of points assigned to the LT device is stored in 32 bits.
Fixed to 0.
LT (H)
LST (L) The number of points assigned to the LST device is stored in 32 bits.
Fixed to 0.
LST (H)
LC (L) The number of points assigned to the LC device is stored in 32 bits.
Fixed to 0.
LC (H)
Set by (setting
timing)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)
S (Initial)