IDEC MICROSmart FC5A Series, Руководство пользователя

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19: F
ILE
D
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ROCESSING
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NSTRUCTIONS
FC5A M
ICRO
S
MART
U
SER
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S
M
ANUAL
FC9Y ‐ B1273 19 ‐ 5
NDSRC (N Data Search)
Applicable CPU Modules
Valid Devices
For the valid device address range, see pages 6 ‐ 1 and 6 ‐ 2
(
Basic Vol.).
Source S1 data specifies the value to be sought and the valid range depends on the data type.
The search range cannot straddle data registers, expansion data registers, and special data registers. Make sure that the sum of data
register numbers designated by S1 and S2 does not result in a different data register range.
For source S3 and destination D1, 1 word is always used without regard to the data type.
Destination D1 occupies two consecutive data registers starting with the device designated by D1. Data registers D0 ‐ D1998, D2000 ‐
D7998, and D10000 ‐ D49998 can be designated as destination D1.
When F (float) data type is selected and S1 or S2 does not comply with the normal floating ‐ point format, a user program execution
error will result, turning on special internal relay M8004 and ERR LED on the CPU module.
When S3 is an invalid number or the sum of S2 and S3 is not within the valid data register range, a user program execution error will
result, turning on special internal relay M8004 and ERR LED on the CPU module.
Since the NDSRC instruction is executed in each scan while input is on, a pulse input from a SOTU or SOTD instruction should be used
as required.
Valid Data Types
Quantity of Source and Destination Devices
Depending on the data type, source devices S1 and S2 use a different quantity of devices. Source device S3 and destina ‐
tion device D1 always use 1 word without regards to the data type.
FC5A ‐ C10R2/C/D FC5A ‐ C16R2/C/D FC5A ‐ C24R2/C/D FC5A ‐ D16RK1/RS1 FC5A ‐ D32K3/S3 FC5A ‐ D12K1E/S1E
X X X X X X
Device Function I Q M R T C D Constant Repeat
S1 (Source 1) Value to be sought — — — — — — X X —
S2 (Source 2) First data register number to search — — — — — — X — —
S3 (Source 3) Quantity of blocks to search — — — — — — X X —
D1 (Destination 1) Search result — — — — — — X — —
W (word) X
I (integer) X
D (double word) X
L (long) X
F (float) X
Device W (word), I (integer) D (double word), L (long), F (float)
S1, S2 1 word device 2 word devices
S3, D1 1 word device 1 word device
When input is on, a value specified by device S1 is sought. Data regis ‐
ters are searched, starting with the data register designated by
device S2. Device S3 specifies the quantity of 1 ‐ word or 2 ‐ word
blocks of data registers to search, depending on the data type.
The offset of the data register where a match first occurred is stored
in data register designated by device D1. The quantity of times the
value was matched is stored in the next data register. When the
search results in no match, 65535 is stored in device D1 and 0 is
stored in device D+1.
This instruction is available on upgraded CPU modules with system
program version 210 or higher.
NDSRC(*) S1
*****
S2
*****
S3
*****
D1
*****
When a word device such as D (data register) is designated as the source, 1 point (word or integer data
type) or 2 points (double ‐ word, long, or float data type) are used.