L9_IBKR: Indirect Block Read
(Original Document)
About us
Naming
Name in LL984 Editor
Function Block Name
name of legacy 984 instruction
name in other tools and editors like:
  • Type Library Browser
  • Data Editor
  • Animation Tables
  • Search Results
Function Description
The L9_IBKR (indirect block read) procedure lets you access non-contiguous parameters dispersed throughout your application and copy the contents into a destination block of contiguous addresses. This function block can be used with subroutines or for streamlining data access by host computers or other PLCs..
L9_IBKR has one control input (ENABLE), which initiates the operation.
L9_IBKR produces two possible outputs. OUT echoes the state of the top input. Power is passed to ERR if there is an event in the source table — for example if the source parameter does not exist.
Representation
Parameters
Input Pin
Name
Data Type
Address Range
Meaning
Top
ENABLE
BOOL
–
OFF to ON initiates the operation.
Node
Node Type
Name
Data Type
Address Range
Meaning
Top
IN
SOURCE
ANY_ARRAY_UINT
%MW
The source array contains values with parameter indices that point into the %MW memory. The values at the places pointed to are collected in the DEST array declared as ARRAY[1..LENGTH] OF_UINT.
Middle
IN/OUT
DEST
ANY_ARRAY_UINT
%MW
The destination table declared as ARRAY[1..LENGTH] OF UINT.
LENGTH is represented as a constant value of the LENGTH parameter.
Bottom
IN
LENGTH
UINT
1...255
The number of words in the destination block.
Valid range: 1 to 255.
Output Pin
Name
Data Type
Address Range
Meaning
Top
OUT
BOOL
–
ON indicates the operation succeeded.
Bottom
ERR
BOOL
–
ON indicates the attempted operation is not possible.