Universal interface (Option)
Example:
STATUS Status query
STATUS,0000000100010000 Unit answers: Remote operation mode, power limitation
UA[,<U
max
>] - Set U
max
This command adjusts the voltage limitation. Entering the command without parameters displays the present set
point. If the set point exceeds the maximum voltage of the unit, the range error bit within the ESR register of the
interface is set. The present set point remains unchanged. If the set point is higher than the selected value for U
limit
,
but lower than the unit’s maximum voltage, voltage limitation is restricted to U
limit
. There is no error message.
Example:
GTR Remote control operation
OVP,320 Over voltage protection 320 V
UA,100 Output voltage 100 V
IA,10 Output current 10 A
SB,R Output is active
UA,400 Output voltage 400 V. This command is ignored because the voltage is higher than the maximum voltage of the unit.
Range error is set within the status byte.
UA,250 Output voltage 250 V. Since the output voltage was limited to 200 V via configuration menu, voltage limitation is adjusted
to 200 V. An error bit is not set.
UA Query of adjusted voltage
UA,200.0V Unit answers: set point U
= 200 V
In master/slave mode the voltage of the programmed device is set. In master/slave serial connection the total voltage
is n x UA.
Example:
3 devices are connected in series while in M/S mode. With UA,10 an output voltage of 10V is programmed. Therefore all connected
devices are adjusted to 10V. Since three devices are connected in series, the total voltage is 3 x 10 V = 30 V.
UMPP[,<Umpp>] - Set U
mpp
This command adjusts the MPP voltage for PV
sim
mode. Entering the command without parameters displays the
present set point. If the set point is higher than the maximum voltage of the unit, the range error bit within the ESR
register of the interface is set. The present set point remains unchanged. If the set point is higher than the U
limit
value
which was adjusted in the configuration menu, but lower than the maximum voltage of the unit, the voltage limitation
is restricted to U
limit
. There is no error message.
Example:
GTR Remote operation mode
OVP,200 Over voltage protection 200 V
UA,50.5 Open circuit voltage of a simulated PV generator 50.5 V
IA,10 Short-circuit current of a simulated PV generator 10 A
UMPP,40.4 MPP voltage of a simulated PV generator 40.4 V
IMPP,8.2 MPP current of a simulated PV generator 8.2 A
MODE,PVSIM Activate PV
mode
SB,R Output active
In master/slave mode the MPP voltage of the programmed device is adjusted. When connected in series, the MPP
total voltage is n x UMPP.
WAVE - End Userwave Data
This command ends the transfer of a user defined output characteristic. Interpolation of interim values is layered. For
detailed information about the function of this command see Wavereset.
WAVELIN - End Userwave Data
This command ends the transfer of a user defined output characteristic. Interpolation of interim values is linear. For
detailed information about the function of this command see Wavereset.
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