2600S-901-01 Rev. C / January 2008 Return to Section Topics D-15
Series 2600 System SourceMeter® Instruments Reference Manual Appendix D: Status Model
Status register sets
As shown in Figure D-1 through Figure D-5, there are five status register sets in the status
structure of the SourceMeter; System Summary Event Status, Standard Event Status, Operation
Event Status, Measurement Event Status, and Questionable Event Status.
System Summary Event Registers
As shown in Figure D-1 and Figure D-2, there are five register sets associated with System Event
Status. These registers summarize system status for various nodes connected to the TSP-Link
(see Section 9). Note that all nodes on the TSP-Link share a copy of the system summary
registers once the TSP-Link has been initialized. This feature allows all nodes to access the status
models of other nodes, including SRQ.
In a TSP-Link system, the status model can be configured such that a status event in any node in
the system can set the RQS (Request for Service) bit of the Master Node Status Byte. See “
"TSP-
Link system status"” in this appendix for details on using the status model in a TSP-Link system.
Commands for the system summary registers are summarized in Table D-5.
For example, either of the following commands will set the EXT enable bit:
status.system.enable = status.system.EXT
status.system.enable = 1
When reading a register, a numeric value is returned. The binary equivalent of this value indicates
which bits in the register are set. For details, see “
"Reading registers"” in this appendix. For
example, the following command will read the system enable register:
print(status.system.enable)
The used bits of the system event registers are described as follows:
• Bit B0, Extension Bit (EXT) — Set bit indicates that an extension bit from a another
system status register is set.
•Bits B1-B14,
1
NODEn — Indicates a bit on TSP-Link node n has been set (n = 1 to 64).
1.status.system5 does not use bits B9 through B15.
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