American Magnetics 03300PS-430-601 High Stability Integrated Power Supply System - Manual (Page 147)

Rev. 5 129
Remote Interface Reference
Switch Heater Commands and Queries
•
DECR
Places the Model 430 Programmer in the MANUAL DOWN ramping
mode. Ramping continues at the ramp rate until the Current Limit is
achieved (or zero current is achieved for unipolar power supplies).
•
ZERO
Places the Model 430 Programmer in ZEROING CURRENT mode.
Ramping automatically initiates and continues at the ramp rate until the
power supply output current is less than 0.1% of I
max
, at which point the
AT ZERO status becomes active.
•
STATE?
Returns an integer value corresponding to the ramping state according to
the table below:
4.5.7 Switch Heater Command and Query
The
PSwitch
commands control and query the state of the persistent
switch heater. For further information regarding the persistent switch
heater, see section 3.13 on page 81.
•
PSwitch {0|1}
Turns the persistent switch heater OFF and ON. Sending “0” turns the
switch heater OFF. Sending a “1” turns the switch heater ON. The default
value is “0”.
Table 4-5. Return Values and Meanings for STATE? Query
Return
Value Meaning
1 RAMPING to target field/current
2 HOLDING at the target field/current
3 PAUSED
4 Ramping in MANUAL UP mode
5 Ramping in MANUAL DOWN mode
6 ZEROING CURRENT (in progress)
7 Quench detected
8 At ZERO current
9 Heating persistent switch
10 Cooling persistent switch