Keithley SourceMeter 2600 Series Reference Manual page 562

D-34 Status Model
When a current limit (compliance) condition occurs in SMU A or SMU B of Node
15, the following sequence of events will occur:
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•
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NOTE
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•
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Status configuration (enable) commands
The following commands (sent from the Master Node) enable the appropriate
register bits for the above example:
Node 15 status registers – The following commands enable the current limit
events for SMU A and SMU B of Node 15:
[node15].status.measurement.current_limit.enable = 6
[node15].status.measurement.enable = 2
[node15].status.node_enable = 1
The affected status registers for the above commands are indicated by labels A, B
and C in
System registers – The following commands enable the required system
summary bits for Node 15:
status.system2.enable = 2
status.system.enable = 1
The affected system registers for the above commands are indicated by labels D
and E in
Master Node service request – The following command enables the service
request for the measurement event:
status.request_enable = 1
2600S-901-01 Rev. A / May 2006
Node 15 – Bit B1 or B2 of the Measurement Event Current Limit Summary
register sets when the current limit (compliance) event occurs.
Node 15 – Bit B1 (ILMT) of the Measurement Event Register sets.
Node 15 – Bit B0 (MSB) of the Status Byte sets.
System Summary Registers – Bit B1 (Node 15) of the System2 Summary
Register sets.
The System Summary Registers are shared by all nodes in the
TSP-Link system. When a bit in a system register of Node 15 sets,
the same bit in the Master Node system register also sets.
System Summary Registers – Bit B0 (Extension) of the System Summary
Register sets.
Master Node – Bit B0 (MSB) of the Status Byte sets.
Master Node – With service request enabled, bit B6 (RQS) of the Status
Byte sets. When your program performs the next serial poll of the Master
Node, it will detect the current limit event and can branch to a routine to
service the request.
Figure D-9 on page
Figure D-9 on page
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Series 2600 System SourceMeters Reference Manual
D-35.
D-35.
Appendix D topics