AXIOMET AX-EL300W60A [60/72] Returning data

6.4. Returning Data

The load can return the values of parameter settings, input voltage and current, as well as input power to

computer. It can also return information relating to the internal operation and module identification. For

example: the query command “MEAS:CURR?” asks the load to return the actual input current at the Input

binding posts. Please refer to “Electronic Load SCPI Programming Guide” for detailed information on using

queries. The load stores the response to the query in an output buffer which will hold the information until

it is read by the computer or is replaced with new information.

6.5. Remote Programming Commands

6.5.0.

The SCPI commands have many optional key words for the programmer. Getting familiar with these key

words will help you to know the programming better. Most of the commands have a query syntax which

allows the present parameter settings to be returned to the controller. Please refer to “Electronic Load

SCPI Programming Guide” for details. The load’s major functions can be programmed with a relatively

few number of these commands. The following points are important to remember when you are remotely

programming CC, CR, CV, and CP values.

6.5.1. Basic Operation Modes

The CC, CR, CV, and CP values can be programmed whether or not the associated mode is active. If the

input is turned on, all of the applicable values will take effect at the input when the associated mode is

selected.

6.5.2. Transient Levels

The transient CC, CV, or CR level must be set to a higher level than the respective low level, or the transient

operation will be disabled.

6.5.3. Programmable Current Protection

When programmable current protection is enabled, and the programmed current limit and time delay are

exceeded, the load’s input will be turned off.

6.6. CC Mode Example

This example sets the current level to 0.5A, and then reads back the actual current value.

1) ”INPUT OFF” ; Turns off the load’s input

2) ”MODE CCL” ; Selects the CCL mode

3) ”CURR 0.5” ; Sets current value to 0.5A

4) ”INPUT ON” ; Turns on the load’s input

5) ”MEAS:CURR?” ; Measures the actual input current