-19-
Writing a Logic Program (DR
*
-B
*****
)
9
If you press the Menu/Ok button while the module’s LCD screen shows time
data, or is displaying RUN/STOP, the menu screen will appear.
Use the Z2/Z3 keys to select [PROGRAMMING], and press Menu/Ok button.
This allows you to write to the logic program. If the logic program is running,
STOP the program.
Ladder Program Screen Layout
A single rung (a line connecting two instructions) can have a maximum of five
contact points and one coil, as shown below:
Branch area (Circle cursor)
Displayed when the Shift
button is pressed.
Indicates the function ex-
ecuted when one of the Z
keys or the Menu/Ok button
is pressed while the Shift
button is held down.
Shift button
Contact and
instruction
area (Square
cursor)
Moves the
cursor and
selects the
type of
instruction.
Returns to the menu screen.
Shift Button Functions
Holding down the Shift button and then pressing the specified operation button
allows the following operation including the insertion of a rung or branch.
Operation button
Displayed symbol
Description
Z1 key
ins.
Inserts a rung.
Z2 key
-
Scrolls through the instructions in the direction
indicated by the negative sign.
Z3 key
+
Scrolls through the instructions in the direction
indicated by the positive sign.
Z4 key
Param
Designates a parameter for each instruction.
Menu/Ok button
Del.
Deletes an instruction or rung.
When the cursor is in the contact and instruction area
Operation button
Displayed symbol
Description
Z1 key
Z2 key
Z3 key
Z4 key
Menu/Ok button
Del.
Deletes a rung or branch.
When the cursor is in the branch area
Inserts a rung extension or a branch in the
position indicated by that key's arrow.
