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OA 5000 Series User Manual
3 --- 19
The *CLS command clears
H the Event Queue,
H the Standard Event Status Register (SESR), and
H the Status Byte Register (except the MAV bit; see below).
If the *CLS command immediately follows an <EOI>, the Output Queue and
MAV bit (Status Byte Register bit 4) are also cleared. MAV indicates informa-
tion is in the output queue. DCL will clear the output queue and thus MAV.
*CLS does not clear the output queue or MAV. (A complete discussion of
these registers and bits and of event handling in general is on page 3---35.)
DESE
The DESE (Device Event Status Enable) command sets and queries the bits
in the Device Event Status Enable Register (DESER). The DESER prevents
events from being reported to the Standard Event Status Register (SESR)
and from being entered into the Event Queue. For a complete discussion of
the use of these registers, see page 3---35.
*CLS, *ESE, *ESR, EVENT?, EVMSG?, *SRE, *STB.
DESE <NRf>
DESE?
?
DESE
<Space> <NRf>
<NRf> is a value in the range from 0 to 255. The binary bits of the DESER
are set according to this value. For example, DESE 209 sets the DESER to
the binary value 11010001 (that is, the first bit in the register is set to 1, the
second bit to 1, the third bit to 0, etc.).
The power-on default for DESER is all bits set if *PSC is 1. If *PSC is 0, the
DESER maintains its value through a power cycle.
NOTE
Setting the DESER and the ESER to the same value allows only
those codes to be entered into the Event Queue and summarized
on the ESB bit (bit 5) of the Status Byte Register. Use the *ESE
command to set the ESER. A complete discussion of event handl-
i ng is on pa ge 3 --- 35 .
Related Commands:
Syntax:
Arguments: