Delta Electronics Programmable Logic Controller DVP-PLC - Manual (Page 329)

7 Application Instructions API 50-99
D V P - P L C A P P L I C AT I O N M A N U A L 7-45
API Mnemonic Operands Function
61 D SER P Search a Data Stack
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
1
* * * * * * *
S
2
* * * * * * * * * * *
D * * * * * *
n * * *
SER, SERP: 9 steps
DSER, DSERP: 17 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
1
: Start device for data stack comparison S
2
: Data to be compared D: Start device for storing comparison
result n: Length of data to be compared
Explanations:
1. When S
2
are used in device F, only 16-bit instruction is applicable.
2. D will occupy 5 consecutive points.
3. Range of n : for 16-bit instruction 1 ~ 256; for 32-bit instruction 1 ~ 128.
4. See the specifications of each model for their range of use.
5. The n data in the registers starting from S
1
are compared with S
2
and the results are stored in the registers
starting from D.
6. In the 32-bit instruction, S
1
, S
2
, D and n will designate 32-bit registers.
7. For D , the 16-bit counters and 32-bit counters in SA/SX/SC series MPU cannot be mixed when being used.
Program Example:
1. When X0 = On, the data stack consist of D10 ~ D19 will be compared against D0 and the result will be stored in
D50 ~ D52. If there are equivalent values appearing during the comparison, D50 ~ D52 will all be 0.
2. The data are compared algebraically. (-10 < 2).
3. The No. of the register with the smallest value among the compared data will be recorded in D53; the biggest
will be recorded in D54. When there are more than one smallest value or biggest value, device D will record the
No. of the register with bigger value.
X0
SER D10 D0 D50 K10
S
1
Content
Data to be
compared
Data No. Result D Content Description
D10 88 0 D50 4
Total number of data with
equivalent values
D11 100 1 Equal D51 1 No. of the first equivalent value
D12 110 2 D52 8 No. of the last equivalent value
D13 150 3 D53 7 No. of the smallest value
D14 100 4 Equal D54 9 No. of the biggest value
D15 300 5
D16 100 6 Equal
D17 5 7 Smallest
D18 100 8 Equal
n
D19 500
S
2
D0 = K100
9 Biggest