Xantrex Technology GPIB-XPD manual Changing an output setting

Operation

Command Reference

Command	Description
DLY <seconds>	Sets a programmable time delay employed by the supply before reporting
	fault conditions. The power supply uses the time delay after receiving a new
	output voltage or current setting via VSET or ISET, or after receiving RST,
	TRG, or OUT ON commands. During the time delay, the power supply
	disables CV, CC, and FOLD conditions from generating faults, preventing
	possible nuisance foldback if the supply momentarily switches modes while
	changing an output setting.
	Range: 0 to 32 seconds, with 32ms resolution
	Initial value: 0.5 second
DLY?	Asks for the setting of the programmable time delay before the supply
	reports fault conditions.
	Response: DLY <seconds>
ERR?	Asks for the most recent remote programming error. When the power
	supply detects a programming error, it lights the ERR LED and sets the
	ERR bit in the accumulated status and fault registers. If the error bit has
	been masked using the MASK command, then the ERR bit in the registers
	will not set. Once an error is detected, the remaining portion of the
	command line is discarded. An error query clears the ERR bit in the
	accumulated status register. See “Error Codes” on page 47.
	Response: ERR <error number> Example: ERR 0 (if no error)
FAULT?	Asks for the state of the fault register. A bit is set in the fault register when a
	fault arises for that condition. Lists the conditions which activate a fault bit.
	You can use the MASK command to disable bits from being set in the fault
	register.
	When a bit is set in the fault register it also asserts a signal on the J21-4
	user signal line. You can tie the J21-4 fault line signal to the power supply's
	own External Shutdown user line, J21-1, so that the shutdown signal goes
	low (active) in the case of a user-defined fault.
	The FAULT? query clears bits in the supply's fault register and fault line.
	Response: FAULT <fault mask> where fault mask is the decimal equivalent
	of the total bit weights for the operating conditions as listed in the fault
	register. See “Accumulated Status, Status, and Fault Registers” on page
	46.
FOLD	Sets foldback mode for the supply. Foldback protection disables the power
<2/CC>, <1/CV>,	supply output when the output enters the fold condition. Reset with the RST
<0/OFF>	command.
	Example: Specify FOLD 1 or FOLD CV (Constant Voltage) when you want
	the supply to operate in Constant Current mode and have foldback
	protection disable the output if the supply switches to Constant Voltage
	mode.
	Initial value: FOLD 0/OFF

40 Operating Manual for GPIB for XPD Series Power Supply