Delta Electronics Programmable Logic Controller DVP-PLC - Manual (Page 275)

6 Application Instructions API 00-49
DVP-PLC Application Manual 6-63
API Mnemonic Operands Function
43 D SUM P Sum of Active Bits
Controllers
ES/EX/SS SA/SX/SC EH/SV
Bit Devices Word Devices Program Steps Type
OP X Y M S K H KnX KnY KnM KnS T C D E F
S * * * * * * * * * * *
D * * * * * * * *
SUM, SUMP: 5 steps
DSUM, DSUMP: 9 steps
PULSE 16-bit 32-bit
ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV
Operands:
S : Source device D: Destination device for storing counted value
Explanations:
1. If S and D are used in device F, only 16-bit instruction is applicable.
2. See the specifications of each model for their range of use.
3. Flag: M1020 (zero flag)
4. Among the bits of S, the total of bits whose content is “1” will be stored in D.
5. When all the 16 bits of S are “0”, zero flag M1020 = On.
6. When 32- instruction is in use, D will occupy 2 registers.
Program Example:
When X10 = On, among the 16 bits of D0, the total of bits whose content is “1” will be stored in D2.
X10
SUM D0 D2
0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 K3
D2 D0