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Chapter 11: User Defined Function Blocks LogicPro User’s Guide

180 Watlow Anafaze Doc.# 28002-00 Rev 3.00

Figure 11.8 ADD1 Function Block

Use the following steps to define the UDFB:

1. Select File.

2. Select New.

3. Select User Defined Function Block. The Add

UDFB dialog box appears.

4. Enter Example 1 Add as the Long Name in the Long

field.

5. Enter ADD1 as the Short Name in the Short field.

6. Click [Insert] in the Inputs group.

7. Name the first input EN and set its Type to Bool.

8. Click [OK].

9. Repeat steps 6 to 8 with the second and third inputs

Named as A and B with Type set to INT.

10. Click [Insert] in the Outputs group.

11. Name the first output as Q and set its Type to Bool.

12. Click [OK].

13. Repeat steps 10 to 11 with the second output named as C

with Type set to INT.

14. Click [OK].

LogicPro automatically creates two files, a header file (*.h)

and a C file (*.c), and then puts these two text files on the

window. Some of the names will differ if you are using a

CPC400. In the header file, there is a structure named

Add1Struct defined along with four function prototypes.

In the following example, it is not necessary to add additional

members to the structure.

In the C file, there are four functions. It isn’t necessary to

write any additional code in the Init, Reset and Exit

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Watlow LogicPro Manuale Utente Pagina 196