LG G3F-AD4A User Manual page 46

Chapter 4. FUNCTION BLOCK
4.2.3 Module Reading - Single Type :
: AD4BRD)
Single type of function block for reading the module is performed for only one channel and the specified
channel is 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)
AD4RD
(AD4BRD,
AD2RD)
REQ DONE
BASE STAT
SLOT ACT
CH DATA
Output
(G3F-AD4A : AD4RD, G4F-AD2A : AD2RD,
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
- The base No. on which A/D conversion module is mounted is written on
BASE USINT
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 mount ed is written on this
SLOT USINT
area.
- Setting range: 0 to 7
Available Channel Specification Area
CH USINT
- Available channels are specified in this area.
- Setting range: G3F -AD4A/G3F-AD4B : 0 to 15, G4F -AD2A : 0 to 3
Function Block Execution Complete Area
- When function block reading is executed with no error, 1 is written and until
DONE BOOL
next execution, 1 is continuing. When error occurs, 0 is written and
operation come to stop.
Error Code Display Area
- When error occurs during function block initialization, the error code
STAT USINT
number is written.
- Error code is referred to Section 4.4.
DATA INT
A/D Conversion Value Output Area
4 - 4
G3F-AD4B
Descriptions