Mitsubishi Electric Q26UD(E)HCPU User Manual page 560

Number Name Meaning
SD927 Device name
Device
information
during "RAM
ERROR"
(error code:
1161)
SD928 Device number
*1 Modules whose serial number (first five digits) is "13022" or later
*2 Modules whose serial number (first five digits) is "13102" or later
*3 Modules whose serial number (first five digits) is "14042" or later
*4 Modules whose serial number (first five digits) is "17103" or later
*5 Modules whose serial number (first five digits) is "18052" or later
558
Explanation
This register stores the device name that detected device
memory data change.
Value Device name Value Device name
undetected L
0 8
1 9 B
Device used
by system
2 10 F
3 SM 11 SB
SD V
4 12
5 X 13 S
6 Y 14
T (contact, coil)
7 M 15
ST (contact, coil)
This register stores the device number that detected device
memory data change (lower word)
1) Word devices (SD, T (current value), ST (current
value), C (current value), D, W, SW)
The device number that detected an error is stored.
Example: When SD927 stores 20 and SD928 stores 10,
"RAM ERROR" (error code: 1161) is detected at D10.
2) Bit devices (SM, X, Y, M, L, B, F, SB, V, S)
The device number that detected an error is stored in units of
16 points.
Example: When SD927 stores 9 and SD928 stores 48, "RAM
ERROR" (error code: 1161) is detected at any of B30 to B3F.
Device number stored in SD928
B3F B30
An error is detected at any of them.
3) T (contact, coil), ST (contact, coil), C (contact, coil)
The device number that detected an error is stored in units of
8 points.
Example: When SD927 stores 14 and SD928 stores 48,
"RAM ERROR" (error code: 1161) is detected at any of T48
to T55.
Device number stored in SD928
T55 T48
An error is detected at any of them.
4) When the device number cannot be determined
"0" (fixed value) is stored.
Set by
(When Set)
Value Device name
16 C (contact, coil)
17 T (current value)
18
ST (current value)
19
C (current value)
D
20
21 W
22 SW
-1 unidentified
S (Error)
Corresponding
Corresponding
ACPU
CPU
D9
*1
QnU
New
*2
LCPU