Delta Electronics Programmable Logic Controller DVP-PLC - Manual (Page 277)

6 Application Instructions API 00-49
DVP-PLC Application Manual 6-65
API Mnemonic Operands Function
45 D MEAN P Mean
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 * * * * * * * *
n * * * * * * * * * * *
MEAN, MEANP: 7 steps
DMEAN, DMEANP: 13 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 : Start device to obtain mean value D: Destination device for storing mean value n: The number of consecutive
source devices used
Explanations:
1. If D is used in device F, only 16-bit instruction is applicable.
2. Range of n : 1 ~ 64
3. In ES/EX/SS series models: Operand S cannot designate KnX, KnY, KnM, KnS.
4. ES/EX/SS series MPU does not support E, F index register modification.
5. See the specifications of each model for their range of use.
6. After the content of n devices starting from S are added up, the mean value of the result will be stored in D.
7. Remainders in the operation will be left out.
8. Provided the No. of designated device exceeds its normal range, only the No. within the normal range can be
processed.
9. If n falls without the range of 1 ~ 64, PLC will determine it as an “instruction operation error”.
Program Example:
When X10 = On, the contents in 3 (n = 3) registers starting from D0 will be summed and then divided by 3. The
obtained mean value will be stored in D10 and the remainder will be left out.
MEAN D0 K3 D10
X10
(D0+D1+D2)/3 D10
D0
D1
D2
K100
K113
K125
K112 D10
Remainder = 3, left out