Filter
Top Products
App. - 68
Appendix 9 FB
Appendix 9.1 FB
FB is an abbreviation for a Function Block that is designed to convert a ladder block,
which is used repeatedly in a sequence program, into a component (FB) to be
utilized in a sequence program.
This not only increases the efficiency of program development but also reduces
programming mistakes to improve program quality.
Converted into
a component
FB
Figure App. 9.1 Converting a sequence program into a component
Appendix 9.1.1 Conversion into components
The following section explains the process to convert a simple program into a
component.
Input
Input label Output label
Output
X1
X1
Y12
Y22
X2
D1 K12
Y12
INCP D1
Internal device
Input
label
i_Count
Count_Num1
i_Count
o_C_UP
Count_Num2
i_Count
o_C_UP
Create input/output ladders (Setting parameter).
i_Count o_C_UP
Count_Num
Output
label
o_c_up
i_Count
m_Cnt K12 o_C_UP
INCP m_Cnt
Internal label
Count process 2
Count process 1
Program to be converted into a
component
When changed to an FB
Divide into input and output. In addition,
replace the internal device with an internal label.
Pasting the FB to a program
1) 2)
3) 4)
Figure App. 9.2 Flow of conversion into components