Appendix 3. Function/Function Block List
APP3 - 2
2) Function Block List
Size of library
Processing speed (
µ
sec)
Name
Function
Size of PB
(byte) *1
Size (byte) *2
Size of instance
memory *3
GM3
GM4
CTU
Addition counter
72
110
6
10.2
12.8
CTUD
Addition/subtraction counter
112
186
6
15.6
18.4
F_TRIG
Descending edge detection
40
38
1
5.7
6.6
RS
Preference reset table
48
72
2
7.5
8.7
TON
ON delay timer
56
200
2000
8.5
11.1
REMARK
1) The items marked with ‘*’ has following meaning.
*1 : The size of the program memory which a program occupies when it uses the function once.
*2 : The size of the program memory which a program occupies only one time though it uses the function many times.
*3: The size of the program memory which a program occupies whenever it uses the function block once.
2) The occupied memory size and processing speed of IL programs are same as LD programs.
