Xp Pls600 series Owner's manual

PLS600

Programming Manual

Section Content Page No.

1 OPERATING ODES

1.0.1 Local

1.0.2 Remote

1.0.3 Remote with Lock

1.0.4 Analog Voltage Control

1.0.5 Analog Current Control

1.0.6 Analog Dual Control

1.0.7 Parallel ode

1.0.8 Series ode

41.0.9 ode Transitions Commanded from Front Panel

1.0.10 ode Transitions Commanded via Remote SCPI Command

1.1 LOCAL ODE

51.2 RE OTE ODE

1.2.1 SCPI Commands

1.2.2 Front Panel Commands

1.2.3 Additional Capabilities

1.3 RE OTE WITH LOCK ODE

1.4 ANALOG VOLTAGE CONTROL ODE

1.4.1 Voltage Setpoint

1.4.2 Current Setpoint

1.4.3 Activating/Deactivating the Output

1.4.4 Remote Queries

1.4.5 Additional SCPI Commands

1.4.6 Additional Capabilities

1.5 ANALOG CURRENT CONTROL ODE

1.5.1 Current Setpoint

1.5.2 Voltage Setpoint

1.5.3 Activating/deactivating the output

1.5.4 Remote Queries

1.5.5 Additional SCPI Commands

1.5.6 Additional Capabilities

1.6 ANALOG DUAL CONTROL ODE

Section Content Page No.

1.6.1 Voltage Setpoint 8

1.6.2 Current Setpoint

1.6.3 Activating/deactivating the output

1.6.4 Remote Queries

1.6.5 Additional SCPI Commands

1.6.6 Additional Capabilities

2 RE OTE SENSE CONFIGURATION

2.0.1 Y

ou can enable or disable the PLS600 Remote Sense capability and set the lead resistance

with the following SCPI commands.

2.0.2 In addition, you can command PLS600 to calculate the lead resistance by executing the

following sequence:

3 CALIBRATION

3.0.1 Calibration Sequence

4 SELF-TEST

5 ISCELLANEOUS CO ANDS

5.0.1 *CLS

5.0.2 *IDN?

5.0.3 *RST

5.0.4 SYSTem:PRO pt <ON|OFF>

6 STATUS AND ERRORS 12

6.0.1 Architecture

6.0.2 Questionable Status Fan-Out Registers 14

6.0.3 Operation Status Register 16

6.0.4 Standard Event Status Register 17

6.0.5 Error/Event Queue 18

6.0.6 Error Condition Register 19

6.0.7 Status Byte Register and Service Request Enable Register 20

7 DRIVERS 21

7.1.1 USB drivers

7.1.2 IVI drivers 23

7.1.3 LabVIEW drivers 24

APPENDIX 25

SCPI Commands

List of Figures Page No.

Figure 1 - Overall Status Architecture 12

Figure 2 - Questionable Status Register 13

Figure 3 - Temperature Status Register 14

Figure 4 - Temperature Status Register 15

Figure 5 - Operation Status Register 16

Figure 6 - Standard Event Status Register 17

Figure 7 - Status Byte Register 20

1 OPERATING MODE

PLS600 will operate in one of eight modes:

1.0.1 ocal

In Local mode, the user controls PLS600 via the front panel. While in Local mode the user can achieve nearly full capability via

the SCPI command interface, EXCEPT for setting operational voltage and current setpoints and activating the output. The SCPI

command to deactivate the output will be executed. While in Local mode, the Analog Voltage and Analog Current inputs

are ignored.

1.0.2 Remote

In Remote mode, full capability is available over the SCPI command interface. The front panel Voltage and Current rotary

controls are disabled and the Enable button is recognized only to enter Setup or to deactivate the output. The Analog Voltage

and Analog Current inputs on the Interface board are ignored.

1.0.3 Remote with ock

Remote with Lock mode is identical to Remote mode, except all front panel capability is disabled. (That is, the Enable button

cannot be used either to enter Setup or to deactivate the output.) As in Remote mode, the Analog Voltage and Analog Current

inputs on the Interface board are ignored.

1.0.4 Analog Voltage Control

In Analog Voltage Control mode, the output voltage setpoint is provided by the Analog Voltage input to the Interface board. (The

current setpoint is set to the most recent Local mode setpoint and cannot be changed.) Limited SCPI command capability is

provided. The front panel Voltage and Current rotary controls are disabled and the Output On/Off button is recognized only to

enter Setup or to activate/deactivate the output.

1.0.5 Analog Current Control

In Analog Current Control mode, the output current setpoint is provided by the Analog Current input to the Interface board. (The

voltage setpoint is set to the most recent Local mode setpoint and cannot be changed.) Limited SCPI command capability is

provided. The front panel Voltage and Current rotary controls are disabled and the Output On/Off button is recognized only to

enter Setup or to activate/deactivate the output.

1.0.6 Analog Dual Control

In Analog Dual Control mode, the output current setpoint is provided by the Analog Current input to the Interface board and the

output voltage setpoint is provided by the Analog Voltage input to the Interface board. Limited SCPI command capability is

provided. The front panel Voltage and Current rotary controls are disabled and the Output On/Off button is recognized only to

enter Setup or to activate/deactivate the output. Note that in both OFF and ON states, the screen displays the current mode in

the upper right corner.

1.0.7 Parallel Mode

In parallel mode the analog output is activated and this output is proportional to the output current of the power supply. When

this output voltage is fed to one or more analog inputs of other supplies and the analog inputs of those supplies are set for

Analog Current Control the supplies will share current equally.

1.0.8 Series Mode

In series mode the analog output is activated and this output is proportional to the output voltage of the power supply. When

this output voltage is fed to one or more analog inputs of other supplies and the analog inputs of those supplies are set for

Analog Voltage Control the supplies will match output voltages.

1.0.9 Mode Transitions Commanded from Front Panel

You can enter all modes except Remote with Lock from the front panel.

• Press and hold the Output On/Off button for 5 seconds to enter Setup. Release the Output on/off button and the

Control Source selection screen will appear.

•Press the Output On/Off button again. The Select Control Source (Mode) screen will appear, with the current mode

displayed (for example, LOCAL).

• Turn either rotary control CW or CCW to select the desired mode and press Output On/Off to select it.

• From the Control Source selection screen, turn either rotary control CW to display the Exit option.

Press the Output On/Off button again.

• The Save Config? screen is displayed, with the Yes option. If the newly selected mode is to be stored to non-volatile

memory, press Output On/Off. However, if the newly selected mode is desired only temporarily and can be lost when

primary power is removed, turn either rotary control CCW to display the No option.

Then press the Output On/Off button.

Selecting the No option will not cancel the selection – it will just not store the selection to non-volatile memory. To discard the

new selection, the user must return to the Control Source option and re-select the original mode.

1.0.10 Mode Transitions Commanded via Remote SCPI Command

You can enter all modes including Remote with Lock via the SCPI command interface.

SYSTem:MODe:LOCal For Local mode

SYSTem:MODe:REMote For Remote mode

SYSTem:MODe:RWLock For Remote with Lock mode

SYSTem:MODe VOLTage For Analog Voltage Control mode

SYSTem:MODe:CURRent For Analog Current Control mode

SYSTem:MODe:DUAL For Analog Dual Control mode

Selecting any of the three Analog modes, you will additionally need to select scaling for the appropriate channel, Analog Voltage,

Analog Current, or both. This is done with:

SYSTem:MODe:ASCale <VOLT|CURR>,<3|5|10> Set analog channel scaling level

SYSTem:AOUTput:MODE <DISabled|PARallel|SERies> For parallel/series operation. No scaling is available for the analog output

1.1 OCA MODE

In Local Mode, you will control PLS600 primarily using the front panel controls. However, many SCPI commands are still

available – only setting of setpoints and activating the output are disallowed.

When the output is OFF, the set of available commands is:

VOLTage:PROTect <value> Set voltage protection level (volts)

VOLTage:PROTect? Query voltage protection level (volts)

CURRent:PROTect <value> Set current protection level (amps)

CURRent:PROTect? Query current protection level (amps)

POWer:PROTect <value> Set power protection level (watts)

POWer:PROTect? Query power protection level (watts)

OUTPut:AUTO <ON|OFF> Enable/disable the Auto-Start feature

OUTPut:AUTO? Query present Auto-Start state

SYSTem:CONFiguration:SAVE Save configuration data to non-volatile memory

When the output is ON, the set of available commands is:

OUTPut? Query output state

OUTPut OFF Deactivate output

MEASure:VOLTage? Measure and return output voltage (volts)

MEASure:CURRent? Measure and return output current (amps)

Regardless of the output state, you can query Status and Error registers, as described in Section 6.0.

1.2 REMOTE MODE

In Remote Mode, you will control PLS600 using SCPI commands. You will also have limited control available via the front panel

1.2.1 SCPI Commands

In the following list of available SCPI commands:

OUTPut <ON|OFF> Activate/deactivate output

OUTPut? Query activation state

VOLTage <value|MIN|MAX> Set voltage setpoint (value in volts)

VOLTage? Query voltage setpoint (volts)

CURRent <value|MIN|MAX> Set current setpoint (value in amps)

CURRent? Query current setpoint (amps)

POWer< value|MIN|MAX > Set power setpoint (value in watts)

POWer? Query current setpoint (watts)

MEASure:VOLTage? Measure and return output voltage (volts)

MEASure:CURRent? Measure and return output current (amps)

VOLTage:PROTect <value> Set voltage protection level (volts)

VOLTage:PROTect? Query voltage protection level (volts)

CURRent:PROTect <value> Set current protection level (amps)

CURRent:PROTect? Query current protection level (amps)

POWer:PROTect <value> Set power protection level (watts)

POWer:PROTect? Query power protection level (watts)

OUTPut:AUTOstart <ON|OFF> Enable/disable the Auto-Start feature

OUTPut:AUTOstart? Query present Auto-Start state

SYSTem:CONFiguration:SAVE Save configuration data to non-volatile memory

1.2.2 Front Panel Commands

When in Remote Mode, you will have limited control from the front panel. Specifically, the Output On/Off button is available to

deactivate the output when the output is ON or to enter System Setup to switch to a different Operating Mode when the output is

OFF.

1.2.3 Additional Capabilities

When the output is OFF, you can switch operating modes, as described in Section 1.0.

When the output is OFF, you can configure Remote Sense, as described in Section 2.0.

When the output is OFF, you can execute unit Calibration, as described in Section 3.0.

When the output is ON, you will be able to execute only those commands which disable the output, measure the output voltage

and current, and set the voltage or current setpoint. Regardless of the output state, you can query Status and Error registers, as

described in Section 6.0.

1.3 REMOTE WITH OCK MODE

Remote with Lock Mode is identical to Remote Mode, except you will have no control available from the front panel (i.e., it is

locked).

Remote with Lock Mode (which cannot be exited from the Front Panel) will not be stored in non-volatile memory. An attempt to

do so will replace it with Remote Mode (which can be exited from the Front Panel).

1.4 ANA OG VO TAGE CONTRO MODE

1.4.1 Voltage Setpoint

When the unit is in Analog Voltage Control Mode, the Analog Voltage channel supplies the Voltage Setpoint.

1.4.1.1 Scaling

You can select 3 volt, 5 volt, or 10 volt scaling for the analog voltage input. This is the value which represents the maximum

model-specific voltage. For example, if you have the 400V 2.5A model and have selected the 10V scaling, then 10 volts applied

across the Analog Voltage channel will result in a 400 volt setpoint. For the same scaling, 5 volts applied across the Analog

Voltage channel will result in a 200 volt setpoint.

If Analog Voltage Control Mode is entered via the front panel, you will be asked to select which scaling you want. You may also

select scaling with the SCPI command:

SYSTem:MODe:ASCale VOLT,<3|5|10>

1.4.2 Current Setpoint

The Current Setpoint is the last current value set when in Local Mode, and once in Analog Voltage Control Mode, cannot be

changed either from the front panel or by a SCPI command.

1.4.3 Activating/Deactivating the Output

You can activate or deactivate the output either from the front panel Output on/off button or by the SCPI command:

OUTPut <ON|OFF> Activate/deactivate output

1.4.4 Remote Queries

When the output is ON, you may query the output current and voltage, as well as the output state and voltage and current

setpoints using the commands:

MEASure:VOLTage? Measure and return output voltage (volts)

MEASure:CURRent? Measure and return output current (amps)

OUTPut? Query output state

VOLTage? Query voltage setpoint (volts)

CURRent? Query current setpoint (amps)

POWer? Query power setpoint (watts)

Voltage is returned in volts, current in amperes, and power in watts. The output state is either ON or OFF.

1.4.5 Additional SCPI Commands

Regardless of the output state, you can query Status and Error registers, as described in Section 6.0.

1.4.6 Additional Capabilities

When the output is OFF, you can switch operating modes, as described in Section 1.0.

When the output is ON, you will be able to execute only those commands which activate and deactivate the output and measure

the output voltage and current.

1.5 ANA OG CURRENT CONTRO MODE

1.5.1 Current Setpoint

When the unit is in Analog Current Control Mode, the Analog Current channel supplies the Current Setpoint.

1.5.1.1 Scaling

You can select 3 volt, 5 volt, or 10 volt scaling for the analog current input. This is the value which represents the maximum

model-specific current. For example, if you have the 400V 2.5A model and have selected the 10V scaling, then 10 volts applied

across the Analog Current channel will result in a 2.5 amp setpoint. For the same scaling, 5 volts applied across the Analog

Current channel will result in a 0.750 amp setpoint.

If Analog Current Control Mode is entered via the front panel, you will be asked to select which scaling you want. You may also

select scaling with the SCPI command:

SYSTem:MODe:ASCale CURRent,<3|5|10>

1.5.2 Voltage Setpoint

The Voltage Setpoint is the last voltage value set when in Local Mode, and once in Analog Current Control Mode, cannot be

changed either from the front panel or by a SCPI command.

1.5.3 Activating/deactivating the output

You can activate or deactivate the output either from the front panel Output On/Off button or by the SCPI command:

OUTPut <ON|OFF> Activate/deactivate output

1.5.4 Remote Queries

When the output is ON, you may query the output current and voltage, as well as the output state and voltage and current

setpoints using the commands:

MEASure:VOLTage? Measure and return output voltage (volts)

MEASure:CURRent? Measure and return output current (amps)

OUTPut? Query output state

VOLTage? Query voltage setpoint (volts)

CURRent? Query current setpoint (amps)

POWer? Query power setpoint (watts)

Voltage is returned in volts, current in amperes, and power in watts. The output state is either ON or OFF.

1.5.5 Additional SCPI Commands

Regardless of the output state, you can query Status and Error registers, as described in Section 6.0.

1.5.6 Additional Capabilities

When the output is OFF, you can switch operating modes, as described in Section 1.0.

When the output is ON, you will be able to execute only those commands which activate and deactivate the output and measure

the output voltage and current.

1.6 ANA OG DUA CONTRO MODE

1.6.1 Voltage Setpoint

When the unit is in Analog Dual Control Mode, the Analog Voltage channel supplies the Voltage Setpoint.

1.6.1.1 Analog Input Scaling

You can select 3 volt, 5 volt, or 10 volt scaling for the analog voltage input. This is the value which represents the maximum

model-specific voltage. For example, if you have the 400V 2.5A model and have selected the 10V scaling, then 10 volts applied

across the Analog Voltage channel will result in a 400 volt setpoint. For the same scaling, 5 volts applied across the Analog

Voltage channel will result in a 200 volt setpoint.

If Analog Voltage Control Mode is entered via the front panel, you will be asked to select which scaling you want. You may also

select scaling with the SCPI command: SYSTem:MODe:ASCale VOLTage,<3|5|10>

1.6.2 Current Setpoint

When the unit is in Analog Dual Control Mode, the Analog Current channel supplies the Current Setpoint.

1.6.2.1 Analog Input Scaling

You can select 3 volt, 5 volt, or 10 volt scaling for the analog current input. This is the value which represents the maximum

model-specific current. For example, if you have the 400V 2.5A model and have selected the 10V scaling, then 10 volts applied

across the Analog Current channel will result in a 2.5 amp setpoint. For the same scaling, 5 volts applied across the Analog

Current channel will result in a 0.750 amp setpoint.

If Analog Current Control Mode is entered via the front panel, you will be asked to select which scaling you want. You may also

select scaling with the SCPI command: SYSTem:MODe:ASCale CURR <3|5|10>

1.6.3 Activating/deactivating the output

You can activate or deactivate the output either from the front panel Output On/Off button or by the SCPI command:

OUTPut <ON|OFF> Activate/deactivate output

1.6.4 Remote Queries

When the output is ON, you may query the output current and voltage, as well as the output state and voltage and current

setpoints using the commands:

MEASure:VOLTage? Measure and return output voltage (volts)

MEASure:CURRent? Measure and return output current (amps)

OUTPut? Query output state

VOLTage? Query voltage setpoint (volts)

CURRent? Query current setpoint (amps)

POWer? Query power setpoint (watts)

Voltage is returned in volts, current in amperes, and power in watts. The output state is either ON or OFF.

1.6.5 Additional SCPI Commands

Regardless of the output state, you can query Status and Error registers, as described in Section 6.0.

1.6.6 Additional Capabilities

When the output is OFF, you can switch operating modes, as described in Section 1.0.

When the output is ON, you will be able to execute only those commands which activate and deactivate the output and measure

the output voltage and current.

2 REMOTE SENSE CONFIGURATION

2.0.1 You can enable or disable the PLS600 Remote Sense capability and set the lead resistance with the following SCPI

commands.

RSENSE Enable/disable Remote Sense

RSENSE? Return Remote Sense state

RSENSE:RESistance Set the remote sense resistance

RSENSE:RESistance? Return the remote sense resistance

2.0.2 In addition, you can command PLS600 to calculate the lead resistance by executing the following sequence:

1. Short leads which connect to the load at the load.

2. Execute the command to enable Remote Sense

RSENse ON

3. Execute the command to calculate lead resistance.

RSENse:RESistance:CALCulate <current> Initiates calculation

The <current> value is the current, in amperes, at which the lead resistance is to be calculated and will normally be toward the

high end of your application.

If the specified current is greater than the maximum allowed for the PLS600 model you are using, you will trigger the error:

-222,”Data out of range”

4. Execute the command to query the remote sense calculation state.

RSENse:RESistance:CALCulate?

If the calculation is still taking place, PLS600 will report: CALCULATIN

When the calculation is complete, PLS600 will report: COMPLETE

If the calculated resistance is too large for practical application of remote sensing, PLS600 will return the error: 181,”Resistance

too large”

3 CA IBRATION

You can calibrate PLS600 over the SCPI command interface. To do so you must execute a series of steps while opening and

shorting the output. These steps may be performed via the front panel or via SCPI commands. A calibrated high-accuracy digital

multimeter (DMM) and a high accuracy shunt is required to perform calibration.

The sequence of commands is listed below. The sequence must be run to completion. If it is aborted early either by cycling

power or exiting Calibration Mode, you must restart the command sequence from the beginning.

3.0.1 Calibration Sequence

1 Remove any load from the output terminals and apply the DMM leads to the output terminals. Set the output voltage to

a low value (recommend 10% of the rated output voltage) and enable the output. Record the low voltage setpoint.

2 Use the DMM to record the actual output voltage of the supply. Record the low voltage measured.

3 Set the output voltage to a high value (recommend 90% of the rated output voltage). Record the high voltage setpoint.

4 Use the DMM to record the actual output voltage of the supply. Record the high voltage measured.

5 Command PLS600 to perform the voltage calibration based on the recorded values:

CALibration:CALCulate:VOLTage <low voltage setpoint>,<low voltage measured>,<high voltage setpoint>,<high voltage

measured> All voltages must be in Volts.

6 Disable the output. Let it bleed down to near 0V. Connect the shunt to the output terminals and apply the DMM leads to

the shunt terminals. Set the output current to a low value (recommend 10% of the rated output current) and enable the

output. Record the low current setpoint.

7 Use the DMM to record the actual output current of the supply. This may involve dividing a measured voltage by the

known shunt resistance. Record the low current measured.

8 Set the output current to a high value (recommend 90% of the rated output current). Record the high current setpoint.

9 Use the DMM to record the actual output current of the supply.Record the high current measured. This may involve

dividing a measured voltage by the known shunt resistance.

10 Command PLS600 to perform the current calibration based on the recorded values:

CALibration:CALCulate:CURRent <low current setpoint>,<low current measured>,<high current setpoint>,<high current

measured> All current must be in Amperes.

4 SE F-TEST

PLS600 executes Self-Test as part of its power-up sequence. In addition, you may exercise a number of Self-Test options with

the following SCPI commands:

*TST? Execute Self-Test and return the results.

TEST:SELFtest[:EXECute] same as above

TEST:QUERy? Return most recent Self-Test results without executing.

TEST:SELFtest:CLE Clear Self-Test results

5 MISCE ANEOUS COMMANDS

PLS600 recognizes a number of miscellaneous SCPI commands.

5.0.1 *CLS

*CLS clears the Event registers of the Questionable Status, Operation Status, Temperature Status, and Hardware Status

5.0.2 *IDN?

*IDN? returns the identification string for this unit. The string will contain, separated by commas: 1) the company name,

Versatile Power; 2) the model; 3) the serial numbers of the main and interface boards; and 4) the software revision

number for the main and interface board processors. For example, a 100V 10A model may, in response to *IDN?, return:

“Versatile Power,Bench 100-10 XR,031418032001,1.00.0051/1.00.1361”

5.0.3 *RST

*RST executes a soft reset of the system. The output is deactivated, all error Conditions are cleared (however, error

Events are not), and the unit is returned to its Output Off state. The operating mode is not changed.

5.0.4 SYSTem:PROMpt <ON|OFF>

If you are interacting directly with PLS600 and would like to have a prompt, SYSTem:PROMpt enables (ON) or disables

(OFF) the SCPI prompt. The prompt is OFF by default. The prompt is a newline (0x0A) character.

6 STATUS AND ERRORS

6.0.1 Architecture

Figure 1 shows the Overall Status Architecture. Each section will then be discussed in greater detail.

Figure 1. Overall Status Architecture

Questionable Status Register

Figure 2 shows the Questionable Status Register.

The Questionable Status Register takes the standard SCPI structure. The seven individual condition inputs are:

6.0.1.1 Over-Voltage Error. When activated, the unit has exceeded the Over-Voltage Protection limit.

6.0.1.2 Over-Current Error. When activated, the unit has exceeded the Over-Current Protection limit.

6.0.1.3 Over-Power Error. When activated, the unit has exceeded the Over-Power Protection limit.

6.0.1.4 Not Calibrated. The unit is not calibrated.

6.0.1.5 Watchdog Error. A watchdog timeout has occurred and the processor has restarted itself.

6.0.1.6 Self-Test Error. A self-test error has occurred. Self-test is run automatically at power-up and can additionally be

commanded remotely.

6.0.1.7 Output Error

Regulation of the output has been lost.

6.0.1.8 SCPI Access

Access to the Questionable Status Register is via the following commands:

STATus:QUEStionable[:EVENt]? Rtn Event register

STATus:QUEStionable:CONDition? Rtn Condition register

STATus:QUEStionable:ENABle <value> Set Enable register

STATus:QUEStionable:ENABle? Rtn Enable register

Figure 2. Questionable Status Register

6.0.2 Questionable Status Fan-Out Registers

In addition, there are two fan-out structures feeding the Temperature Error and Hardware Error inputs.

6.0.2.1 Temperature Status Register

Figure 3 shows the Temperature Status Register. It also takes the standard SCPI structure.

The Temperature Status Register two individual condition inputs are:

6.0.2.1.1 Output Board Over-Temperature. The output board temperature surpasses its allowed operating limit.

6.0.2.1.2 Primary Board Over-Temperature. The primary board temperature surpasses its allowed operating limit.

6.0.2.1.3 Fan Stall. The cooling fan is non-operative.

6.0.2.1.4SCPI Access

Access to the Temperature Status Register is via the following commands:

STATus:QUEStionable:TEMPerature[:EVENt]? Rtn Event register

STATus:QUEStionable:TEMPerature:CONDition? Rtn Condition register

STATus:QUEStionable:TEMPerature:ENABle <value> Set Enable register

STATus:QUEStionable:TEMPerature:ENABle? Rtn Enable register

Figure 3. Temperature Status Register

6.0.2.2 Hardware Status Register

Figure 4 shows the Temperature Status Register. It also takes the standard SCPI structure.

The Hardware Status Register four individual condition inputs are:

6.0.2.2.112V Bias Error. The internal 12V bias is either too low or too high for valid operation.

6.0.2.2.23.3V Bias Error. The internal 3.3V bias is either too low or too high for valid operation.

6.0.2.2.3PFC Failure Pending. The unit’s PFC supply has either failed or primary power has been removed.

6.0.2.2.4PFC Failure. The unit’s PFC supply has failed.

6.0.2.2.5SCPI Access

Access to the Temperature Status Register is via the following commands:

STATus:QUEStionable:HARDware[:EVENt]? Rtn Event register

STATus:QUEStionable:HARDware:CONDition? Rtn Condition register

STATus:QUEStionable:HARDware:ENABle <value> Set Enable register

STATus:QUEStionable:HARDware:ENABle? Rtn Enable register

Figure 4. Temperature Status Register

6.0.3 Operation Status Register

Figure 5 shows the Operation Status Register.

The Questionable Status Register takes the standard SCPI structure. The four individual condition inputs are:

6.0.3.1 Measuring

Whenever the output is activated, the unit will be measuring. Therefore, Output Activated serves as this condition.

6.0.3.2 Output Activated

This is the indication that the output is currently activated.

6.0.3.3 Constant Voltage

The output is in its constant voltage mode, where voltage is held constant at a specified setpoint and current will vary dependent

on load.

6.0.3.4 Constant Current

The output is in its constant current mode, where current is held constant at a specified setpoint and voltage will vary dependent

on load.

6.0.3.5 Constant Power

The output is in its constant power mode, where power is held constant at a specified setpoint and voltage/current will vary

dependent on load.

Figure 5. Operation Status Register

6.0.3.6 SCPI Access

Access to the Operation Status Register is via the following commands:

STATus:OPERation[:EVENt]? Rtn Event register

STATus:OPERation:CONDition? Rtn Condition register

STATus:OPERation:ENABle <value> Set Enable register

STATus:OPERation:ENABle? Rtn Enable register

6.0.4 Standard Event Status Register

Figure 6 shows the Standard Event Status Register.

The Standard Event Status Register takes the standard SCPI structure. The eight individual condition inputs are:

6.0.4.1 Operation Complete