Enable And Transition Registers; Controlling Node And Srq Enable Registers; Status Register Set Specifics; System Summary Event Registers - Keithley 3700 series Reference Manual

Series 3700 System Switch/Multimeter Reference Manual

Enable and transition registers

In general, there are three types of user-writable registers that are used to configure which bits
feed the register summary and when it occurs. The registers are identified in the command table
footnotes as follows:




Controlling node and SRQ enable registers

Refer to the status.request and status.node ICL commands for the attributes to control system
node and SRQ enable bits and read associated registers.

Status register set specifics

There are five status register sets in the status structure of the Series 3700; system summary
event status, standard event status, operation event status, questionable event status, and
measurement event status.

System summary event registers

There are five register sets associated with system event status. These registers summarize
system status for various nodes connected to the TSP-Link. 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. Commands
are summarized below.
For example, either of the following commands will set the EXT enable bit:
status.system.enable = status.system.EXT
status.system.enable = 1
The following command will request the system enable register value:
print(status.system.enable)
Document Number: 3700S-901-01 Rev. A / August 2007
Enable register (identified as ―enable‖ in the table footnotes): Allows various associated
events to be included in the summary bit for the register.
Negative-transition register (NTR; identified as ―ntr‖ in the table footnotes): A particular
bit in the event register will be set when the corresponding bit in the NTR is set, and the
corresponding bit in the condition register transitions from 1 to 0.
Positive-transition register (PTR; identified as ―ptr‖ in the table footnotes): A particular
bit in the event register will be set when the corresponding bit in the PTR is set, and the
corresponding bit in the condition register transitions from 0 to 1.
Section 8: Status Model
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