Yaskawa Ladder Works Operation Manual - Manual (Page 19)

2.1 PROGRAMMING
2-2
2.1 PROGRAMMING
This new ladder editor uses a rung style editing that is difference from the original ladder editor.
The rung is first specified in a program and then the instruction is placed on it. The location of
instruction or the destination of a branch operation is shown so the editing operation such as Cut,
Copy, and Paste is easier to use.
Rules for Rung Style Editing
There are rules to use the rung style editing.
a. Insert a rung connected with the left power rail and the right power rail first.
b. Insert a branch if the parallel circuit is required.
c. Arrange instruction on the rung or the branch.
2.1.1 Object
The operation in the ladder program is defined as the object.
Objects In the Program Window
There are different kinds of objects in the program window.
(5)
(6)
(7)
(8)
(9)
a.
c.
b.
(4) (1) (3) (2)
(10)
(1) Program Comment
This is a comment for the program, and only one per one program window is
displayed.
The Cut and Delete operation is prohibited.
(2) Branch Block
This is a block that two or more branches are located.
(3) Cursor
The location where the object is arranged is displayed.