Mitsubishi MELSEC Q Series Programming Manual page 242

DB+(P),DB-(P)
When three data are set ((
DB+, DB-
DB+P, DB-P
Setting
Data
S1
S2
D
Function
DB+
(1) Adds the BCD 8-digit data designated by
stores the result of the addition at the device designated by
(2) 0 to 99999999 (BCD 8 digits) can be assigned to
(3) If the result of the addition operation exceeds 99999999, the upper bits will be ignored.
The carry flag in this case does not go ON.
6-40
+1, )+(
S1 S1 S2
Command
Command
: Data to be added to/subtracted from or head number of the devices where the data to be added
S1
to/subtracted from is stored (BCD 8 digits)
: Data for adding/subtracting or head number of the devices where the data for adding/subtracting is stored
S2
(BCD 8 digits)
: Head number of the devices where the addition/subtraction operation result is stored (BCD 8 digits)
D
Internal Devices
R, ZR
Bit Word
S1 S1 S2
+1
(Upper 4 digits) (Lower 4 digits) (Upper 4 digits) (Lower 4 digits)
5 6 7 8 9 1 2 3 + 0 1
9 9 0 0 0 0 0 0 0 1
+1, ) ( +1, ), ( +1,
S2 D D S1
indicates an instruction symbol of
S1
P
S1
J \
U \G
Bit Word
and the BCD 8-digit data designated by
S1
.
D
S2
+1 D +1
(Upper 4 digits) (Lower 4 digits)
2 3 4 5 6 7 5 8 0 2 3 6 9 0
Digits exceeding the designated number
of digits are assumed to be 0.
, and
S1 S2 D
6 5 4 3 2 1 0 0 6 5 4 3 2 1
)-( +1, ) ( +1,
S1 S2 S2 D D
DB+/ DB .
S2 D
S2 D
Constants
Zn Other
K, H
––
––
–– ––
, and
S2
D
.
))