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8.2 Operating Procedure (GP-IB)
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.2.11 Status Model
Logical sum
Generation of service
request RQS
MSS
RQS
ESB MAV
ESB MAV
×
Status byte registers(STB)
Service request enable register
(
)
Information on output queu
Information on standard event resiste
The term "event" refers to any phenomenon which generates a service
request.
The status byte register holds information relating to the event registers
and the output queue. It is further possible to use the service request
enable register as a mask to select the items required. If any of the bits
selected by the mask becomes 1, bit 6 (the master summary status or
MSS bit) is also set to 1, an SRQ message is generated, and this
generates a service request.