Mitsubishi Electronics 13JW55 ユーザーズマニュアル
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.
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.
component.
Input
Input label
Output label
Output
X1
X1
Y12
Y22
X2
D1 K12
Y12
INCP D1
Internal device
Input
label
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
component
When changed to an FB
Divide into input and output. In addition,
replace the internal device with an internal label.
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