Esr? Query (Event Status Register) - Iwatsu VOAC760 Manual

3.4.9  ESR? query (Event Status Register)
This reads the current contents of the standard event status register.
When the contents of the event status register are read, they are then cleared.
Query syntax
 ESR?
Response message <status>
<status> is a numeric value ranging from "0" to "189" in the <NR1 NUMERIC RESPONSE DATA>
format that the value of each bit in the standard event status register is weighted by exponentiation
of "2".
Remarks: Structure of standard event status register
Bit
7
6
5
4
3
2
1
0
This instrument does not use bit 1 and 6. Therefore, even though all bits of this register are set at "1",
the maximum value of the response message becomes 189 ( 255  64  2).
Weighting Meaning
128 PON - Power ON
64 (URQ) - Not used in this instrument.
32 CME - Command error
16 EXE - Execution error
8 DDE - Instrument specific error
4 QYE - Query error
2 (RQC) - Not used in this instrument.
1 OPC Operation complete
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