Mitsubishi Electric MELSEC iQ-R Series, Programming Manual

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7 APPLICATION INSTRUCTIONS
7.20 Data Processing Instructions
Checking 32-bit binary data
DSUM(P)
These instructions store the total number of "1" bits in the 32-bit binary data stored in the specified device.
■
Execution condition
Setting data
■
Descriptions, ranges, and data types
■ Applicable devices
Processing details
• These instructions store the total number of "1" bits in the 32-bit binary data, which is stored in the device specified by (s),
in the device specified by (d).
Ladder ST
ENO:=DSUM(EN,s,d);
ENO:=DSUMP(EN,s,d);
FBD/LD
Instruction Execution condition
DSUM
DSUMP
Operand Description Range Data type Data type (label)
(s) Start device containing data in which the total number of "1"
bits is to be counted -2147483648 to 2147483647 32-bit signed binary ANY32
(d) Device for storing the total number of bits

16-bit signed binary ANY16
EN Execution condition

Bit BOOL
ENO Execution result  Bit BOOL
Operand Bit Word Double word Indirect
specification
Constant Others
X, Y, M, L,
SM, F, B, SB,
FX, FY J  \  T, ST, C, D, W,
SD, SW, FD, R,
ZR, RD U  \G  , J  \  ,
U3E  \(H)G 
Z LT, LST,
LC LZ K, H E $
(s)
           
(d)
           
The total number of 1s is stored in binary. (Sixteen 1s in the left example)
RnCPU RnENCPU
RnSFCPU RnSFCPU RnPCPU RnPCPU
(Standard) (Safety) (Redundant) (Process)
(s) (d)
EN ENO
d s
∙∙∙ b31 b16
1 0 0 1 1 1 0 0 1 1 0 0 0 1 1 1
∙∙∙ b15 b0
0 0 0 0 1 0 0 0 1 1 1 1 0 1 1 0
(d)
∙∙∙ ∙∙∙ b15 b8b7 b0
0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0
(s)+1 (s)