Agilent Technologies 8935 Series Manual do Utilizador Página 169

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Chapter 6 169
Advanced Operations
HP-IB Service Requests
Service Request Enable Register
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 6-15, is an 8-bit register that enables corresponding Summary
Messages in the Status Byte Register.
Figure 6-15 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
3210
RQS
MSS
Service
Request
Generation
&
Status Byte Register
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