GSK 980TC3 Series, Руководство пользователя

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Chapter 5 PLC Functional Code
49
Ⅰ
Programming
capacity) in the data table can be specified by specifying the address. Thus allowing change in table
capacity even after writing the sequence program in the ROM.
Format:
REP
（
W
）
RST
ACT
DSCH
S1
Storage
address
of data
in data
table
S2
Data
table
head
address
S3
Search
data
address
Length
Format
S4
Output
address
of
search
result
Fig. 5-29-1
Control conditions:
Check repetition （ REP ）
REP=0
：
Execute the DSCH instruction, search begins from the head address, and the
repetition will be omitted, the search stops when the target data is found in the
first time, and output its address. If the searched data is not found, W=1.
REP=1 ： Execute the DSCH instruction, if the searched data is not found or is two （ or
more than two
）
, W=1.
Reset
（
RST
）
RST=0 ： Release reset.
RST=1 ： Reset. W=0.
Activation instruction (ACT):
ACT
＝
0 : Do not execute DSCH instruction, W does not change.
ACT ＝ 1 : Execute DSCH instruction. If the search data is found, table number where
the data is stored will be output. If the search data is not found, W becomes
1.
Parameter:
Length ： Specifies data length
1
：
1-byte long data.
2
：
2-byte long data.
S1 ： Storage address of number of data in data table. This address requires
memory of number of byte according to the format designation. Number of data
in the table is n+1(head number in the table is 0 and the last number is n).
S2
：
Data table head address.
S3 ： Search data input address.
S4
：
Search result output address. Actual transmission address=head address
+index value
，
index value is 0
～
(S1-1)
，
the actual transmission address