Keithley 708B Reference Manual page 430

Models 707B and 708B Switching Matrix Reference Manual
status.node_event
This attribute stores the status node event register.
Type TSP-Link accessible
Attribute (R) Yes
Usage
nodeEventRegister = status.node_event
nodeEventRegister
Details
This read-only attribute's value is returned as a decimal value. The binary equivalent of the value indicates which
register bits are set. In the binary equivalent, the least significant bit is bit B0, and the most significant bit is bit
B7. For example, if a value of 1.29000e+02 (which is 129) is read as the value of the condition register, the
binary equivalent is 10000001. This value indicates that bit B0 and bit B7 are set.
B7
Most
significant
bit
1
The returned value can indicate one or more status events occured.
The following table contains descriptions of the bits:
Bit Value
B0 status.MEASUREMENT_SUMMARY_BIT
status.MSB
B1 Not used.
B2
status.ERROR_AVAILABLE
status.EAV
B3 status.QUESTIONABLE_SUMMARY_BIT
status.QSB
B4
status.MESSAGE_AVAILABLE
status.MAV
B5
status.EVENT_SUMMARY_BIT
status.ESB
B6 status.MASTER_SUMMARY_STATUS
status.MSS
B7 status.OPERATION_SUMMARY
status.OSB
In addition to the above constants, nodeEventRegister can be set to the decimal equivalent of the bit(s) set.
When more than one bit of the register is set, nodeEventRegister contains the sum of their decimal weights.
For example, if 129 is returned, bits B0 and B7 are set (1 + 128).
707B-901-01 Rev. A / August 2010
Affected by
Not applicable
The node event register's status in decimal form. A zero (0) indicates no bits set.
Other decimal values indicate various bit settings.
B6 B5
> >
0 0
Where saved
Not saved
B4 B3
> >
0 0
Description
Set summary bit indicates that an enabled measurement
event has occurred.
Bit 0 decimal value: 1
Not applicable.
Set summary bit indicates that an error or status message
is present in the Error Queue.
Bit 2 decimal value: 4
Set summary bit indicates that an enabled questionable
event has occurred.
Bit 3 decimal value: 8
Set summary bit indicates that a response message is
present in the Output Queue.
Bit 4 decimal value: 16
Set summary bit indicates that an enabled standard event
has occurred.
Bit 5 decimal value: 32
Set bit indicates that an enabled Master Summary Status
(MSS) bit of the Status Byte register is set.
Bit 6 decimal value: 64
Set summary bit indicates that an enabled operation event
has occurred.
Bit 7 decimal value: 128
Section 7: Command reference
Default value
0
B2 B1
> >
significant
0 0
B0
Least
bit
1
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