102
Procedures
Section 3-2
3-2-6
Setting the FB Instance Areas
The areas where addresses for variables used in function blocks are allocated
can be set. These areas are called the function block instance areas.
1,2,3...
1.
Select the instance in the Ladder Section Window or in the global symbol
table, and then select
Function Block/SFC Memory - Function
Block/SFC Memory Allocation
from the PLC Menu.
The Function Block/SFC Memory Allocation Dialog shown below will ap-
pear.
2.
Set the FB instance areas.
The non-retained and retained areas are set in words. The timer and
counter areas are set by time and counter numbers.
The default values are as follows:
CJ2-series CPU Units
Note
Force-setting/resetting is enabled when the following EM banks are specified:
CS/CJ-series CPU Units Ver. 3.0 or Later, and NSJ Controllers
Note
(1) Bit data can be accessed even if the DM or EM Area is specified for the
non-retained area or retained area.
FB Instance
Area
Default value
Applicable memory
areas
Start address
End address
Size
Non Retain
H512
H1407
896
CIO, WR, HR, DM,
EM (See note.)
Retain
H1408
H1535
128
HR, DM, EM (See note.)
Timers
T3072
T4095
1024
TIM
Counters
C3072
C4095
1024
CNT
Non-retained area
Retained area
Counter area
Timer area
First
address
Last
address
Size
CJ2H-CPU64(-EIP)/-CPU65(-EIP)
EM bank 3
CJ2H-CPU66(-EIP)
EM banks 6 to 9
CJ2H-CPU67(-EIP)
EM banks 7 to E
CJ2H-CPU68(-EIP)
EM banks 11 to 18
FB Instance
Area
Default value
Applicable memory
areas
Start address
End address
Size
Non Retain
(See notes 1
and 3.)
H512 (See
note 2.)
H1407 (See
note 2.)
896
CIO, WR, HR, DM, EM
Retain (See
note 1.)
H1408 (See
note 2.)
H1535 (See
note 2.)
128
HR, DM, EM
Timers
T3072
T4095
1024
TIM
Counters
C3072
C4095
1024
CNT
Summary of Contents for SYSMAC CX-Programmer 9
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Page 26: ...xxvi Application Precautions 4 ...
Page 27: ...Part 1 Function Blocks ...
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Page 154: ...128 Procedures Section 3 2 ...
Page 155: ...Part 2 Structured Text ST ...
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Page 160: ...134 CX Programmer Specifications Section 4 2 ...
Page 206: ...180 Procedures Section 6 1 ...
Page 208: ...182 System defined external variables supported in function blocks Appendix A ...
Page 230: ...204 Revision History ...
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