HP 8924C - Page 201

201
S:\HP8924C\USRGUIDE\BOOK\chapters\hpibstat.fb
Chapter 4, Status Reporting
Status Reporting
Status Byte/Service Request Enable Register
The Status Byte Register is an 8-bit register that summarizes the Summary
Message Bits from the status register groups and the Output Queue. The Status
Byte Register can be used to send a Service Request (SRQ) to the controller.
Service request enabling allows the application programmer to select which
Summary Messages in the Status Byte Register may cause a service request.
The Service Request Enable Register, illustrated in
figure 29 , is an 8-bit register
that enables corresponding Summary Messages in the Status Byte Register.
Table 20 details the Status Byte Register bit assignments.
Figure 29 Status Byte/Service Request Enable Register
- - - Summary Message Bits - - -
Logical
OR
Service Request
Enable Register
*SRE <interger>
*SRE?
&
&
&
Status Byte Registe
107 5432
&
&
&
read by *STB?
read by Serial Poll
SRQ
ch4drw15.drw
76
ESB MAV
32 10
RQS
MSS
Service
Request
Generation
&
Status Byte Register