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LiAM User's Manual
5.3.23 "MWI" Command
The 'MWI' command can be used to set the output current value and it is used
when fast set-point changes are needed.
The use of this command is alternative to the MRM (Module RaMping): the
power supply reaches the desired output current value just using the internal analog
PID regulator parameters, without ramping with the pre-defined slew rate to the new
set-point.
This command is usually needed when running feedback-related applications
and for small changes in the output current.
The correct form format for this command is as follows:
where:
value is the desired output current value [A].
Replies from the LiAM power supply are in the form '#AK\r', or '#NAK\r';
this non-acknowledgment reply is generated, as it is for the MRM command, when:
the set value is out-of-range (the maximum settable current value is user-
defined and stored in EEPROM cell 4);
the module is OFF (it is necessary to turn the module ON first);
the module performing a ramp (it is necessary to wait for the power supply to
end the previous ramp) or a waveform.
Examples:
MWI example with the module OFF:
MWI:-3.55679\r
MWI example with the module ON and already regulating:
MWI:+1.32\r
75
MWI:value\r
Remote Control
#NAK\r
#AK\r
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