Inserting, Deleting, Cancelling delete operation – Yaskawa MP900 Series Machine Controller for Standard Operation User Manual
Page 399: Deleting one instruction in a relay circuit

Ladder Logic Programming
7.3.6 Editing Programs
7-32
7
Inserting
The procedure to insert instructions into a string of instructions is outlined below.
1. Move the cursor to the position where the instruction is to be inserted.
2. Select Edit (E) and then INS (I) from the programming menus. "INS" will appear at the
bottom of the screen to indicate that the insert operation is in progress, space to insert
instructions will be provided, and the rest of the problem below the insertion area will
temporarily not be displayed.
3. Enter the instruction. Further instructions can be entered until step 4. is performed.
4. Select Edit (E) and then INS (I) from the programming menus.
The instruction entered in step 3. will be inserted and the portion of the program below
the insertion point will be displayed correctly again.
Deleting
The procedure to delete a block of instructions is outlined below.
1. Move the cursor to beginning of the block of instructions to be deleted.
2. Select Edit (E) and then DEL (D) from the programming menus. "DEL" will appear at
the bottom of the screen to indicate that the delete operation is in progress.
3. Move the cursor to the end of the block of instructions to be deleted. The section to be
deleted will be displayed in reversed color.
4. Select Edit (E) and then DEL (D) from the programming menus.
The block of instructions specified in steps 1. and 3. will be deleted.
Cancelling Delete Operation
Press the ESC Key to cancel the delete operation without deleting any instructions.
Deleting One Instruction in a Relay Circuit
• The power line may be corrected as shown in the diagram below if one instruction in a
relay circuit is deleted, depending on the connection status of the circuit where the
instruction was deleted.
1 0000
MB000202
MB000020
SGL01
Insertion area
1 0002
IB00000
OB00000
1 0004
MB006801
SGL02
MB004900
INFO