This document introduces how to use sub-program in PLC project to improve the readability of PLC project.

Sub-program is a part of program, which can be called by P registers.

There are 2 sub-programs (P0 AND P1) in PLC program as Figure 1 shows. But the P0 is hidden so users can just see the program of P1.

Figure 1

In WECON PLC Editor, the sub-program can be hidden to improve the readability of PLC program. This chapter will introduce how to hide the sub-program.

Operating Procedure

1. Right click on the red circle area (please see Figure 1);
2. Select the “encrypt” in Right-click menu, as Figure 2 shows;
3. Set password (the default password in the demo plc project is 12345678);

Figure 2

By using this function, you could keep your subprogram private or just enhance the readability of the plc program.