Delta Electronics VFD-E manual When AC motor drive is in Stop mode and this function is

Chapter 4 Parameters

Settings	Function	Description
		When AC motor drive is in STOP mode and this function is
		enabled, it will display PLC2 in the PLC page and you can
	Download/Execute/	download/execute/monitor PLC. When this function is disabled, it
		will display PLC0 in the PLC page and stop executing PLC
24	Monitor PLC
		program. The motor will be stopped by Pr.02.02.
	Program (PLC2)
		When operation command source is external terminal, the keypad
		cannot be used to change PLC status. And this function will be
		invalid when the AC Motor drive is in PLC1 status.

Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11 4-143