Omron cx-programmer 5.0-function block operation 사용자 설명서
16
Converting Function Block Definitions to Library Files
Section 1-4
Setting Procedure
Select Function Block Memory - Function Block Memory Allocation from
the PLC Menu. Set the areas in the Function Block Memory Allocation Dialog
Box.
the PLC Menu. Set the areas in the Function Block Memory Allocation Dialog
Box.
Function Block Instance Areas
Function Block Holding
Area Words (H512 to
H1535)
Area Words (H512 to
H1535)
The Function Block Holding Area words are allocated from H512 to H1535.
These words are different to the standard Holding Area used for programs
(H000 to H511) and are used only for the function block instance area (inter-
nally allocated variable area). These words cannot be specified as instruction
operands. They are displayed in red if input when a function block is not being
created. Although the words can be input when creating a function block, an
error will occur when the program is checked. If this area is specified not to be
retained in the Function Block Memory Allocation Dialog Box, turn the power
ON/OFF or clear the area without retaining the values when starting opera-
tion.
These words are different to the standard Holding Area used for programs
(H000 to H511) and are used only for the function block instance area (inter-
nally allocated variable area). These words cannot be specified as instruction
operands. They are displayed in red if input when a function block is not being
created. Although the words can be input when creating a function block, an
error will occur when the program is checked. If this area is specified not to be
retained in the Function Block Memory Allocation Dialog Box, turn the power
ON/OFF or clear the area without retaining the values when starting opera-
tion.
1-4
Converting Function Block Definitions to Library Files
A function block definition created using the CX-Programmer can be stored as
a single file known as a function block definition file with filename extension
*.cxf. These files can be reused in other projects (PLCs).
a single file known as a function block definition file with filename extension
*.cxf. These files can be reused in other projects (PLCs).
FB Instance
Area
Default value
Applicable memory
areas
Start Address
End Address
Size
Non Retain
H512
H1407
896
CIO, WR, HR, DM, EM
Retain
H1408
H1535
128
HR, DM, EM
Timers
T3072
T4095
1024
TIM
Counters
C3072
C4095
1024
CNT
tim_b
tim_a
ENO
TIMX tim_a OFF_TIME
tim_b
TIMX tim_b ON_TIME
tim_a
ENO
Project
Project
Save
Read
Function block definition
Example: CLOCK_PULSE
Example: CLOCK_PULSE
Function block definition
Example: CLOCK_PULSE
Example: CLOCK_PULSE
1. Algorithm
1. Algorithm
Function block
definition file (.cxf)
definition file (.cxf)
TIMX tim_a OFF_TIME
TIMX tim_b ON_TIME
tim_a
TIMER
tim_b
TIMER
ON_TIME
INT
OFF_TIME
INT
Name
Type
Internal
Internal
Input
Input
Input
Input
2. Variable Definitions
Usage
tim_a
TIMER
tim_b
TIMER
ON_TIME
INT
OFF_TIME
INT
Name
Type
Internal
Internal
Input
Input
Input
Input
2. Variable Definitions
Usage