12-86 Return to Section Topics 2600S-901-01 Rev. C / January 2008
Section 12: Instrument Control Library Series 2600 System SourceMeter® Instruments Reference Manual
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 Clears all bits.
status.MEASUREMENT_SUMMARY_BIT Sets (enables) MSB bit (B0).
status.MSB Sets (enables) MSB bit (B0).
status.ERROR_AVAILABLE Sets (enables) EAV bit (B2).
status.EAV Sets (enables) EAV bit (B2).
status.QUESTIONABLE_SUMMARY_BIT Sets (enables) QSB bit (B3).
status.QSB Sets (enables) QSB bit (B3).
status.MESSAGE_AVAILABLE Sets (enables) MAV bit (B4).
status.MAV Sets (enables) MAV bit (B4).
status.EVENT_SUMMARY_BIT Sets (enables) ESB bit (B5).
status.ESB Sets (enables) ESB bit (B5).
status.MASTER_SUMMARY_STATUS Sets (enables) MSS bit (B6).
status.MSS Sets (enables) MSS bit (B6).
status.OPERATION_SUMMARY_BIT Sets (enables) OSB bit (B7).
status.OSB Sets (enables) OSB bit (B7).
nodeenabreg can also be set to the decimal weight of the bit to be set. Examples:
To set bit B0 (MSB), set nodeenabreg to 1 (2
0
).
To set bit B2 (EAV), set nodeenabreg to 4 (2
2
).
To set bit B7 (OSB), set nodeenabreg to 128 (2
7
).
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 (SRQ)” in Appendix D.
Example Sets the MSB bit of the status node enable register:
status.node_enable = status.MSB
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