Keithley 2601 Reference Manual page 346

Section 12: Instrument Control Library
status.node_enable
Attribute Status node enable register.
Usage Reads status node enable register:
nodeenabreg = status.node_enable
Writes to system enable register:
status.node_enable = nodeenabreg
Set nodeenabreg to one of the following values:
0
status.MEASUREMENT_SUMMARY_BIT
status.MSB
status.ERROR_AVAILABLE
status.EAV
status.QUESTIONABLE_SUMMARY_BIT
status.QSB
status.MESSAGE_AVAILABLE
status.MAV
status.EVENT_SUMMARY_BIT
status.ESB
status.MASTER_SUMMARY_STATUS
status.MSS
status.OPERATION_SUMMARY_BIT
status.OSB
nodeenabreg
To set bit B0 (MSB), set
To set bit B2 (EAV), set
To set bit B7 (OSB), set
To set more than one bit of the register, set nodeenabreg to the sum of their decimal
weights. For example, to set bits B0 and B7, set nodeenabreg to 129 (1 + 128).
Remarks • This attribute is used to read or write to the status node enable register.
• Reading the node enable status register returns a value. The binary equivalent of the
returned value indicates which register bits are set. The least significant bit of the binary
number is bit 0, and the most significant bit is bit 7.
• For example, assume value 129 is returned for the node enable register. The binary
equivalent is 10000001. This value indicates that bit B0 (MSB) and bit B7 (OSB) are set.
• Assigning a value to this attribute enables one or more status events for enabled system
nodes. When an enabled status event occurs, it will set one or more enabled system node
bits of the system registers (see "status.system.*" registers).
• The status node enable register uses most of the same summary events as the status
byte. Bit B1(MSB) is not used, and bit B6 is used as Master Summary Status (MSS). For
details, see "status.condition" register.
Details See "Status byte and service request
Example Sets the MSB bit of the status node enable register:
status.node_enable = status.MSB
12-86
can also be set to the decimal weight of the bit to be set. Examples:
to 1 (2
nodeenabreg
to 4 (2
nodeenabreg
to 128 (2
nodeenabreg
(SRQ)" in
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Series 2600 System SourceMeter® Instruments Reference Manual
Clears all bits.
Sets (enables) MSB bit (B0).
Sets (enables) MSB bit (B0).
Sets (enables) EAV bit (B2).
Sets (enables) EAV bit (B2).
Sets (enables) QSB bit (B3).
Sets (enables) QSB bit (B3).
Sets (enables) MAV bit (B4).
Sets (enables) MAV bit (B4).
Sets (enables) ESB bit (B5).
Sets (enables) ESB bit (B5).
Sets (enables) MSS bit (B6).
Sets (enables) MSS bit (B6).
Sets (enables) OSB bit (B7).
Sets (enables) OSB bit (B7).
0
).
2
).
7
).
Appendix D.
2600S-901-01 Rev. C / January 2008