User manual

62 GMC-I Messtechnik GmbH
*PSC, *PSC? – Power-On Status Clear Flag Query
Functions
The power-on status clear flag (PSC) determines whether or not
the contents of the non-volatile enable registers will be cleared
when the device is shut down.
Programming
The PSC flag can be set and queried:
a) Setting
Setting command: *PSC n
b) Query
Query command: *PSC?
Response string: "0" or "1"
Comment
The PSC flag setting is retained, even after the device has been
switched off or execution of the *CLR command.
*RCL – Recalling Stored Settings
Functions
Settings which have been previously saved to battery-backed
memory with the *SAV command (SAVE) can be recalled and
activated with *RCL (RECALL). Differentiation must be made
between complete device settings which are saved to register
numbers 1 through 10, and USET, ISET and TSET values for the
SEQUENCE function which are saved to addresses 011 through
255.
Syntax
*RCL register number
Parameter
Register number
Parameter type: number (whole number)
Selection can be made from the following alternatives for
the register number parameter:
1 through 10
Recalls a parameter set from SETUP memory. Settings
stored to the selected register for the following parameters
are activated at the device:
USET ISET OVSET
ULIM ILIM OUTPUT
OCP DELAY MINMAX
TSET TDEF
REPETITION START_STOP
Settings for POWER_ON, T_MODE and DISPLAY remain
unchanged.
11 through 255
Recalls a parameter set from the SEQUENCE memory.
Settings stored to the selected register for the following
parameters are activated at the device:
USET ISET TSET
All other device settings remain unchanged.
Default setting after RESET (*RST):
Register number: does not apply
Register contents: unchanged
a) Manual Operation
See description on page 29.
b) Programming
Execution command:
*RCL register number
Example (HP Basic):
OUTPUT 712;"*RCL 1"
! Recall and activate device setting
! from SETUP register 1
Comment
Data can be recalled from registers 11 through 255 during
programming, even if the SEQUENCE function has not be
initialized.
If an attempt is made to open an invalid (empty) register from the
SEQUENCE memory, the command cannot be executed. “Err
24” appears briefly at the display and bit 5 (SEQE, SEQence error)
is set in event register B (ERB).
If the USET or the ISET parameter setting recalled from the
SEQUENCE memory exceeds momentarily active ULIM or ILIM
soft-limits, execution of the command is aborted, “Err 21”
appears briefly at the display and bit 5 (SEQE, SEQence error) is
set in event register B (ERB).
The RECALL function can also be controlled via the trigger input
at the analog interface after selecting device setting T_MODE
RCL ( chapter 5.7, page 74).
*RST – Reset Device Settings
Functions
After activating the reset function, the device is returned to its
default settings.
Addressing status Unchanged
Input and output buffers Unchanged
Service request SRQ Unchanged
Status byte register STB Unchanged
Event registers ESR, ERA, ERB Unchanged
Enable registers ESE, ERAE, ERBE, SRE, PRE Unchanged
Stored parameters
SETUP registers 1 through 10 Unchanged
SEQUENCE register Unchanged
DDT register Cleared
Min-Max memory (UMIN, UMAX, IMIN, IMAX) Reset
Parameter settings Reset to default settings
Note: After entering command *RST a waiting time of approx.
30 ms should be observed before entering the next command.
Default settings:
OUTPUT OFF Output deactivated
USET 0 Voltage setpoint = 0 V
ISET 0 Current setpoint = 0 A
OVSET max Max. overvoltage protection trigger value
ULIM unom USET limit value = nominal voltage
ILIM inom ISET limit value = nominal current
OCP OFF Current limiting by means of current regulation
DELAY 0 No output off delay
MINMAX OFF Storage of measured min-max values disabled
TSET 0 (=tdef) SEQUENCE dwell time = default duration
SEQUENCE OFF SEQUENCE function deactivated
DISPLAY ON Display activated
POWER_ON Unchanged
T_MODE Unchanged
TDEF Unchanged
REPETITION Unchanged
START_STOP Unchanged
Manual Operation
 Press the <CE/LOCAL> and <ENTER> keys.
Programming
Programming example (HP Basic):
OUTPUT 712; "*RST"
Parameter:
n
Meaning
0 Enable registers will not be cleared
1 Enable registers will be cleared