LG G3F-AD4A User Manual page 45

Chapter 4. FUNCTION BLOCK
4.2.2 Module Reading-Array Type :
AD4BARD)
Array type of function block for reading the module is performed for every channel in block and the specified
channels are used to read output variable of data displayed from A/D conversion digital value.
Function
I/O
Block
Input
G3F-AD4A
(G3F-AD4B,
G4F-AD2A)
AD4ARD
(AD4BARD,
AD2ARD)
REQ DONE
BASE STAT
SLOT ACT
CH DATA
Output
REMARK
*note 1: The number of array is G3F-AD4A of 16, G3F-AD4B of 16 and G4F-AD2A of 4 ,
the element numbers means the channel ones.
(G3F-AD4A : AD4ARD, G4F-AD2A : AD2ARD, G3F-AD4B :
Data
Variable
type
Function Block Execution Request Area
- The execution of function block reading is requested in this area.
REQ BOOL - If the status to be connected with this area is satisfied on the program operation
and input condition changes from low(0) to high(1), function block initialization for
the module is executed.
Base Module Location Number Area
BASE USINT - The base No. on which A/D conversion module is mount e d is written on this area.
- Setting range : GM1 series( 0 to 31 ), GM2 series( 0 to 7), GM3/4 series( 0 to 3)
Slot Location Number Area
- The slot No. on which A/D conversion module is mounted is written on this area.
SLOT USINT
- Setting range: 0 to 7
BOOL Available Channel Specification Area
CH [Array] - Available channels are specified in this area.
*note1 - Enabled channels are specified to 1 and disabled channels are specified to 0.
Function Block Execution Complete Area
- When function block reading is execute d with no error, 1 is written and until next
DONE BOOL
execution, 1 is continuing. When error occurs, 0 is written and operation come to
stop
Error Code Display Area
STAT USINT - When error occurs during function block reading, the error code number is written.
- Error code is referred to Section 4.4.
BOOL Channel Operation Display Area
ACT [Array] - The channel specified after executing the function block read with no error is
*note1 right, 1 is written and, on the non-specified channel, 0 is written
INT
DATA [Array] A/D Conversion Value Output Area
*note1
4 - 3
Descriptions