Appendix
A.4 Required memory for function blocks
A.4 Required memory for function blocks
The memory required for unconnected function blocks is the same for all pro-
gramming languages.
Each function block will reserve the memory space listed below when unconnected.
In addition, text function block D has extensive static operating parameters that
require additional memory space. Some modules require additional system para-
meters that are created once when the 1st instance is used.
Function blocks Instance 1 Instance 2
Note
A
68
68
AC
68
68
AL
540
38
+1 per character in subject and message
AR
40
40
AV
60
60
BC
48
48
BT
48
48
BV
40
40
C
52
52
CF
48
48
CH
52
52
CI
52
52
CP
32
32
D
76
36
DB
36
36
DC
120
120
DL
92
–
FT
56
56
GT
28
28
HW
68
68
+4 per channel
HY
68
68
+4 per channel
IC
56
1)
56
1)
+12 min. per interrupt program
IE
52
1)
52
1)
+12 min. per interrupt program
IT
52
1)
52
1)
+12 min. per interrupt program
JC
20
20
LB
16
16
LS
64
64
MC
84
84
MM
48
48
MR
20
20
MU
64
64
MX
96
96
NC
32
32
Tab. 146: Memory Required FB in Bytes
easyE402/24 MN050009ENEaton.com
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