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Chapter 4. FUNCTION BLOCK
4 - 3
4.2.2 Module Reading-Array Type :
(G3F-AD4A : AD4ARD, G4F-AD2A : AD2ARD, G3F-AD4B :
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
Block
I/O
Variable
Data
type
Descriptions
REQ
BOOL
Function Block Execution Request Area
- The execution of function block reading is requested in this area.
- 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
USINT
Base Module Location Number Area
- The base No. on which A/D conversion module is mounted is written on this area.
- Setting range : GM1 series( 0 to 31 ), GM2 series( 0 to 7), GM3/4 series( 0 to 3)
SLOT
USINT
Slot Location Number Area
- The slot No. on which A/D conversion module is mounted is written on this area.
- Setting range: 0 to 7
Input
CH
BOOL
[Array]
*note1
Available Channel Specification Area
- Available channels are specified in this area.
- Enabled channels are specified to 1 and disabled channels are specified to 0.
DONE
BOOL
Function Block Execution Complete Area
- When function block reading is executed with no error, 1 is written and until next
execution, 1 is continuing. When error occurs, 0 is written and operation come to
stop
STAT
USINT
Error Code Display Area
- When error occurs during function block reading, the error code number is written.
- Error code is referred to Section 4.4.
ACT
BOOL
[Array]
*note1
Channel Operation Display Area
- The channel specified after executing the function block read with no error is
right, 1 is written and, on the non-specified channel, 0 is written
Output
DATA
INT
[Array]
*note1
A/D Conversion Value Output Area
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.
REQ
BASE
SLOT
CH
AD4ARD
(AD4BARD,
AD2ARD)
STAT
ACT
DONE
DATA
G3F-AD4A
(G3F-AD4B,
G4F-AD2A)