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Mnemonic Bit
CSUM
2
QUES
3
MAV
4
ESB
5
RQS/MSS
6
9.7
Service Request Enable Register
The Service Request Enable register can be programmed to specify the bit in the Status Byte
register that will generate service requests.
Table 9-4 Bit Description of Status Byte
Value Bit
Weight
Channel Summary. It indicates if an enabled channel event
4
has occurred. It is affected by Channel Condition,
Channel Event and Channel Summary Event registers.
Questionable. It indicates if an enabled questionable event
8
has occurred.
Message Available. It indicates if the Output Queue contains
16
data.
Event Status Bit. It indicates if an enabled standard event
32
has occurred.
Request Service/Master Summary Status. During a serial
64
pull, RQS is returned and cleared. For an *STB? query,
MSS is returned without being cleared.
Status Reporting
Meaning
9-5
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