Operation Event Status - Keithley 2303 User Manual

7-12 Status Structure

Operation event status

The used bits of the operation event register (shown in Figure 7-5) are described as follows:
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•
•
Figure 7-5
Operation event status
:CONDition?
[:EVENt]?
To OPC bit
of Status Byte
OR
Register
:ENABle <NRf>
:ENABle?
Decimal Weights
Bit B3, current limit (CL) — Set bit indicates that the output is in current limit. This
bit clears when the instrument is no longer in current limit.
Bit B4, current limit tripped (CLT) — Set bit indicates that the output has turned off
due to a current limit condition. This bit clears when the output is turned back on.
Bit B6, power supply shutdown (PSS) — This bit indicates that the output has turned
off due to an overload and/or overheat condition. This typically indicates that the user
tried to exceed the power output capability of the unit.
___
PSS
(B6)
(B15-B7)
___
PSS
(B6)
(B15-B7)
&
___
PSS
(B6)
(B15-B7)
64
___
6
(2 )
PSS = Power Supply Shutdown
CLT = Current Limit Tripped
CL = Current Limit
___
CLT CL
(B5) (B3)
(B4)
___
CLT CL
(B5) (B3)
(B4)
&
&
___
CLT CL
(B5) (B3)
(B4)
16 8
___
4 3
(2 )
(2 )
& = Logical AND
OR = Logical OR
___
Operation Condition
(B2-B0)
Register
___
Operation Event
(B2-B0)
Register
___
Operation Event
Enable Register
(B2-B0)
___