IDEC MicroSmart - Manual (Page 118)

4: O PERATION B ASICS
4-6 « FC4A M ICRO S MART U SER ’ S M ANUAL »
Edit User Program Rung by Rung
Start the user program with the LOD instruction by inserting a NO contact of
input I0.
1. Click the Normally Open contact icon .
2. Move the mouse pointer to the first column of the first line where you
want to insert a NO contact, and click the left mouse button.
Note: Another method to inser t a NO (or NC) contact is to move the
mouse pointer where you want to inser t the contact, and type A (or B).
The Normally Open dialog box appears.
3. Enter I0 in the Allocation Number field, and click OK.
A NO contact of input I0 is programmed in the first column of the first ladder line.
Next, program the ANDN instruction by inserting a NC contact of input I1.
4. Click the Normally Closed contact icon .
5. Move the mouse pointer to the second column of the first ladder line where you want to insert a NC contact, and click
the left mouse button.
The Normally Closed dialog box appears.
Uncheck the Use
Tag check box.