DVP-ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming
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API Mnemonic Operands Function
43
D SUM P Sum of Active bits
Controllers
ES2/EX2 SS2 SA2
SE SX2
Bit Devices Word devices Program Steps Type
OP X Y M S K H KnX KnYKnM KnS T C D E F
S * * * * * * * * ***
D * * ***
SUM, DSUMP: 5 steps
DSUM, DSUMP: 9 steps
PULSE 16-bit 32-bit
ES2/EX2 SS2 SA2
SE SX2 ES2/EX2 SS2 SA2
SE SX2 ES2/EX2 SS2 SA2
SE SX2
Operands:
S: Source device D: Destination device for storing counted value
Explanation:
1. This instruction counts the total active bits in S and store the value in D.
2. D will occupy two registers when using in 32-bit instruction.
3. If operand S, D use index F, only a 16-bit instruction is available.
4. If there is no active bits, zero flag M1020 =ON.
Program Example:
When X20 = ON, all active bits in D0 will be counted and the result will be stored in D2.
X20 SUM D0 D2
0000 00011 100 0000 3
D2D0