Chapter 4 Operation Interface|VP3000 
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7.  PLC Function 
(1) After entering the PLC setting page, there will be three possible PLC status: PLC0 (no PLC 
function), PLC1 (PLC is running) and PLC2 (PLC stops running). 
 
(2) Use the up/down key to switch PLC0, PLC1 and PLC2. 
 
(3) Press ENTER at PLC1 setting page to start the PLC program, and the PLC light starts to stay on. 
After pressing ESC to return to the PLC function page, the PLC light remains on. 
   
(4) Press ENTER at PLC2 setting page to stop the PLC program, and the PLC light starts to flash. 
After pressing ESC to return to the PLC function page, the PLC light remains flashing.