5.9. MEMory

The MEMory subsystem works with PSU state files that are saved to (*SAV) and recalled from (*RCL) non-volatile storage locations numbered 0 through 9. The storage location 0 named “Power down state” is used to store the current PSU parameters.

SCPI command	Description
MEMory
:NSTates?	Returns total number of state storage memory locations
:STATe
:CATalog?	Lists the names associated with all ten state storage locations
:DELete {<profile>}	Deletes the contents of a state storage location
:ALL	Deletes the contents of all state storage locations
:NAME {<profile>}, {<name>}	Assigns a custom name to a state storage locations
:RECall
:AUTO {<bool>}	Specifies whether the power-down state is recalled from location 0 on power-on
:SELect {<profile>}	Specifies which PSU state will be used at power on
:VALid? {<profile>}	Determines whether a storage location contains a valid state

5.9.1. MEMory:NSTates

Syntax	MEMory:NSTates?
Description	Returns the total number of SAV/RCL states available in the PSU.
Return	Returns numeric value (NR1) which is one greater than the maximum that can be sent as a parameter to the SAV and RCL commands.
Usage example	MEM:NST? 10

5.9.2. MEMory:STATe:CATalog

Syntax	MEMory:STATe:CATalog?
Description	This query requests a list of defined names in the MEMory:STATe subsystem.
Return	The PSU returns a list of defined <name>’s in a comma separated list. Each <name> is returned in a quoted string.
Usage example	MEM:STAT:CAT? "Power down state", "All outputs on", "dual 15V/300mA", "Power protection at 100W", "–Not used–", "–Not used–", "–Not used–", "–Not used–", "–Not used–", "–Not used–"
Related Commands	MEMory:STATe:NAME

5.9.3. MEMory:STATe:DELete

Syntax	MEMory:STATe:DELete {<profile>} MEMory:STATe:DELete:ALL
Description	When used with a profile number this command deletes the contents of the specified storage location. The MEMory:STATe:DELete:ALL deletes the contents of storage locations 1 through 9. An error is generated on an attempt to recall a deleted state.
Parameters	Name	Type	Range	Default
	<profile>	NR1	1 – 9	–
Return	None
Usage example	MEM:STAT:DEL 2
Related Commands	RCL SAV

5.9.4. MEMory:STATe:NAME

Syntax	MEMory:STATe:NAME {<profile>}, {<name>} MEMory:STATe:NAME? {<profile>}
Description	This command associates a <name> with a SAV/RCL register number. May assign same name to different locations and state names are unaffected by *RST. Deleting a storage location’s contents MEMory:STATe:DELete resets associated name to “–Not used–”
Parameters	Name	Type	Range	Default
	<profile>	NR1	1 – 9	–
	<name>	Quoted string	0 to 32 characters	–
Return	Returns a SAV/RCL register number associates with profile number.
Usage example	MEM:STAT:DEF, 2, "All outputs on" MEM:STAT:DEF? 2 "All outputs on"
Related Commands	MEMory:STATe:DELete

5.9.5. MEMory:STATe:RECall:AUTO

Syntax	MEMory:STATe:RECall:AUTO {<bool>} MEMory:STATe:RECall:AUTO?
Description	This command disables or enables the automatic recall of a specific stored PSU state selected using the MEMory:STATe:RECall:SELect command when power is turned on. Select ON to automatically recall one of the ten stored states or the “power-down” state (location 0) when power is turned on. Select OFF to issue a reset (*RST) when power is turned on.
Parameters	Name	Type	Range	Default
	<bool>	Boolean	ON\|OFF\|0\|1	–
Return	The query command returns 0 (OFF) or 1 (ON).
Usage example	MEM:STAT:REC:AUTO? 1
Related Commands	*SAV MEMory:STATe:RECall:SELect SYSTem:POWer

5.9.6. MEMory:STATe:RECall:SELect

Syntax	MEMory:STATe:RECall:SELect {<profile>} MEMory:STATe:RECall:SELect?
Description	This command selects which PSU state will be used at power on if the automatic recall mode is enabled (see MEMory:STATe:RECall:AUTO ON command). If the automatic recall mode is disabled (MEMory:STATe:RECall:AUTO OFF), then a “factory reset” (return to the default values) is issued when power is turned on.
Parameters	Name	Type	Range	Default
	<profile>	NR1	0 – 9	–
Return	The query command returns numeric value (NR1) for 0 to 9 indicating which instrument state will be used at power on.
Usage example	MEM:STAT:REC:SEL? 2
Related Commands	*SAV MEMory:STATe:RECall:AUTO SYSTem:POWer

5.9.7. MEMory:STATe:VALid

Syntax	MEMory:STATe:VALid? {<profile>}
Description	This command queries the specified storage location to determine if a valid state is currently stored in this location. Use this command before sending the *RCL command to determine if a valid state has been previously stored on queried location.
Parameters	Name	Type	Range	Default
	<profile>	NR1	0 – 9	–
Return	Returns 0 if no state has been stored or if it has been deleted. It returns 1 if a valid state is stored in this location.
Usage example	MEM:STAT:VAL? 2 1
Related Commands	RCL SAV