Keithley 3700 series Reference Manual page 323

Series 3700 System Switch/Multimeter Reference Manual
slot[X].interlock.override
Attribute
Usage
Remarks
Example
slot[X].interlock.state
Attribute
Usage
Document Number: 3700S-901-01 Rev. A / August 2007
Indicates if a card should error on closing backplane relays if interlock is disengaged.
To read interlock override setting:
value = slot[X].interlock.override
[X]: Slot number (1 to 6)
To write interlock override setting:
slot[X].interlock.override = value
[X]: Slot number (1 to 6)
value: Represents the desired state of the read interlock override. Set to one of the
following:

slot.ON or 1 (default setting)

slot.OFF or 0
This attribute exists only for installed cards that support detecting an interlock break.
Otherwise, the return value will be nil.
If card supports detecting an interlock break, set this attribute to the desired response.
To enable interlock override on the card, set to slot.ON. Otherwise (if an override
performed on card is not desired), set to slot.OFF. This setting applies to all interlocks
on the card.
To not have an override performed after detecting an interlock break on Slot 3:
slot[3].interlock.override = slot.OFF
Indicates the interlock state of a card.
To read the interlock state:
value = slot[X].interlock.state
[X]: Slot number (1 to 6)
value: Represents whether the interlocks are engaged or not. Interpret the interlock
state values as follows:
nil: no card is installed or card installed does not support interlocks
0: interlocks 1 and 2 are disengaged on card.
1: interlock 1 is engaged while interlock 2, if it exists, is disengaged.
2: interlock 1 is disengaged while interlock 2 is engaged.
3: interlocks 1 and 2 are engaged on card.
Section 9: Instrument Control Library (ICL)
9-179