User manual

GMC-I Gossen-Metrawatt GmbH 49
UL_L, UL_L? – Lower Limit Value for Voltage Setting
Menu
Function
UL_L defines the lower setting limit (soft-limit) for voltage setpoint
value Uset.
The limit can be used to assure that output voltage is not
inadvertently set below a specified value.
Values outside of the value range (0 ≤ w ≤ Uset) are not accepted,
and cause generation of an error message and setting of an error
bit in event register ERC.2.
Unom is the device-specific maximum nominal voltage.
Entered numeric values are rounded off to device-specific
resolution.
Setting Command
Syntax: UL_L w
Value range: 0 ≤ w ≤ Uset
Default setting
or after RESET (*RST): w = 0
Query Command
Syntax: UL_L?
Sample response string: UL_L +XXX.XXX
Comments
The UL_L function is not active for setting output voltage by
means of control signal Uext via the analog interface.
UMAX? – Maximum Measured Voltage Value
Menu
Function
The UMAX function reads out the highest output voltage value
which was measured by the Uout measuring function and saved
to Min-Max memory while the MINMAX function was set to ON.
If the measured voltage value has exceeded the measuring range
limit at least once with the MINMAX function set to ON, “+OL”
appears at the display for UMAX and “+999999.” is entered to the
data string.
The Min-Max memory value can be reset to the momentarily
measured value with MINMAX RST (for all 4 parameters at once).
Query Command
Syntax: UMAX?
Sample response string: UMAX +XXX.XXX
UMIN? – Minimum Measured Voltage Value
Menu
Function
The UMIN function reads out the lowest output voltage value
which was measured by the Uout measuring function and saved
to Min-Max memory while the MINMAX function was set to ON.
If the measured voltage value has fallen below the measuring
range limit at least once with the MINMAX function set to ON,
“–OL” appears at the display for UMAX and “–999999.” is entered
to the data string.
The Min-Max memory value can be reset to the momentarily
measured value with MINMAX RST (for all 4 parameters at once).
Query Command
Syntax: UMIN?
Sample response string: UMIN +XXX.XXX
UOUT? – Querying the Momentary Voltage Value
SELECT A
Function
The UOUT? function reads out the momentary measured value
for output voltage.
The upper range values may change minimally after balancing!
If the measuring range is exceeded or fallen short of,
“+/–OL” is displayed or “+/–999999” is entered to the data string.
Query Command
Syntax: UOUT?
Sample response string: UOUT +XXX.XXX
USET, USET? – Voltage Setpoint Value
SELECT A and Rotary Encoder Uset
Function
The output voltage setpoint is set with USET. The USET? query
returns the currently selected voltage setpoint as a response.
Values outside of the value range (
0 ≤ UL_L ≤ w ≤ UL_H ≤ Unom ) are
not accepted, and cause generation of an error message and
setting of an error bit in event register ERC.2.
Entered numeric values are rounded off to device-specific
resolution.
Setting Command
Syntax: USET w
Value range: 0 ≤ UL_L ≤ w ≤ UL_H ≤ Unom
Default setting
or after RESET (*RST): w = 0
Query Command
Syntax: USET?
Sample response string: USET +XXX.XXX
WAIT – Additional Waiting Time
—
Function
Command for specifying an additional waiting time between
execution of the two commands. This function can be used to
add additional waiting time within a data string (linked commands)
during processing/execution.
For example, this allows for defined programming of a specified
power-on status within a command string with execution time in
the ms range.
Setting Command
Syntax: WAIT w
Value range: 0.001 s ≤ w ≤ 65.535 s
Caution
During the execution of waiting time receive data are not
processed and the input buffer is blocked, i.e. displays are not
refreshed during waiting time.
Example
ISET 5; OUTPUT ON; USET 10; WAIT 0,100; USET 5
Type Voltage Measuring Range Resolution
Nominal
voltage
Min.
[V]
Max.
[V]
60 W -016.384 +098.300 A 2 mV
Device
Type
Setting Range Setting Resolution
Nom.
Voltage [V]
Min.
[V]
Max.
[V]
Remote
[V]
Manual
[V]
60 0.000 60.000 0.001 0.001