36
Mn
Service Request Enable Register (Mask)
Function: The Service Request Enable Register is used to define the
conditions that will generate an IEEE 488.1 service request,
<SRQ>. This register performs a bit-wise AND’ing operation
with the Status Byte Register.
When an event occurs that causes a bit to be set in the Status
Byte Register and its corresponding bit is set in the Service
Request Enable Register, an <SRQ> will be generated once for
the given event. When the <SRQ> is asserted and a serial poll
of the 1830-C is performed, bit 6 and the bit(s) that initiated
the <SRQ> will be set high in the byte returned by the serial
poll. A serial poll will clear the <SRQ> until it is again asserted
by a new event in the Status Byte Register.
At power-up the default is M0, which means that the <SRQ>
will not be asserted regardless of any bits that are set in the
Status Byte Register.
See Appendix A for a detailed description of the Status
Reporting System.
7 6 5 4 3 2 1 0
Parameter Error Mask
Command Error Mask
Saturation Mask
Over-Range Mask
Bits
Read Done Mask
(Not Used)
Busy Mask
Message Available (MAV) Mask
Syntax: Mn or mn
Parameter: n = 0 - 255
Type: integer
Example: M0 An <SRQ> will not be asserted.
M16 Only the MAV bit will assert an <SRQ>.
M255 Any bit in the Status Byte Register will assert an <SRQ>.
Related
Commands: M? Service Request Enable Register query
Q? Status Byte Register query
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