User`s manual
CHAPTER 4: SPECIAL OPERATIONS
29
5. If you selected the Data Block operand type, enter the block you
want to display or modify.
For all other operand types, press “F1” or “F2” to increment or
decrement the address shown, and then press “↵” (the enter key)
to display the contents in real time.
Note: The contents of each address appear in several different formats,
depending on the operand type selected.
6. Press “PREV” or “NEXT” to move the cursor to the field you
want to modify, and enter new data, if desired. To edit binary
data, position the cursor at the binary field, press “↵” (the enter
key), and press “+/-” to toggle between 1 or 0.
7. Press “↵” (the enter key) to load the new data into the PLC.
The new data that was loaded into the PLC is immediately
displayed.
Note: At any point, pressing “MENU” returns you to the main menu.
To start/stop the PLC:
1. Press “MODE” on the SOI-120 keypad.
2. Select “PAD” (item 4) from the menu that appears. If a Special
Security Screen appears, enter any one of the programmed
security codes.
3. Press “2” to use the Start/Stop function.
4. Press “1” to start the PLC or “2” to stop it. Press “↵” (the enter
key) to exit without starting or stopping the PLC.
Note: Allow 1-2 seconds for the PLC to start or stop.










