DL06 Micro PLC User Manual, 3rd Edition, Rev. E
5-169
Chapter 5: Standard RLL Instructions
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A
B
C
D
The steps listed below are the steps necessary to program the Find Block function.
Step 1: Load the number of bytes in the block to be located. This parameter must
be a HEX value, 0 to FF.
Step 2: Load the length of a table (number of words) to be searched. The Find Block
will search multiple tables that are adjacent in V-memory. This parameter
must be a HEX value, 0 to FF.
Step 3: Load the ending location for all the tables into the accumulator. This
parameter must be a HEX value. You can use the LDA instruction to
convert an octal address to hex.
Step 4: Load the table starting location for all the tables into the accumulator.
This parameter must be a HEX value. You can use the LDA instruction to
convert an octal address to hex.
Step 5: Insert the Find Block instruction. This specifies the starting location of the
block of data you are trying to locate.
FINDB
A aaa
Table 1
Table 2
Table 3
Table n
Block
Start Addr.
End Addr.
Number
of bytes
Start Addr.
Number
of words
Operand Data Type
DL06 Range
A
aaa
V-memory
V
See memory map
V-memory
P
See memory map
Discrete Bit Flags
Description
SP56
On when the specified block is not found.
DS
Used
HPP
N/A
Find Block (FINDB)
The Find Block instruction searches for an occurrence of a
specified block of values in a V-memory table. The function
parameters are loaded into the first and second levels of the
accumulator stack and the accumulator by three additional
instructions. If the block is found, its starting address will be
stored in the accumulator. If the block is not found, flag SP53
will be set.
