Pro-face PRO-iO2 Installation Manual page 19

Writing a Logic Program (DR
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:
Contact and
instruction
area (Square
cursor)
Moves the
cursor and
selects the
type of
instruction.
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.
When the cursor is in the contact and instruction area
Operation button
Z1 key
Z2 key
Z3 key
Z4 key
Menu/Ok button
When the cursor is in the branch area
Operation button
Z1 key
Z2 key
Z3 key
Z4 key
Menu/Ok button
Branch area (Circle cursor)
Returns to the menu screen.
Displayed symbol
ins. Inserts a rung.
Scrolls through the instructions in the direction
-
indicated by the negative sign.
Scrolls through the instructions in the direction
+
indicated by the positive sign.
Param Designates a parameter for each instruction.
Del. Deletes an instruction or rung.
Displayed symbol
Inserts a rung extension or a branch in the
position indicated by that key's arrow.
Del. Deletes a rung or branch.
-19-
* -B *****
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
Description
Description
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