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Table 9-2 Standard Event Status Enable Register
Bit Position Bit Weight Enables
7 128 PON - Power On
6 64 URQ - User Request
5 32 CME - Command Error
4 16 EXE - Execution Error
3 8 DDE - Device Dependent Error
2 4 QYE - Query Error
1 2 RQC - Request Control
0 1 OPC - Operation Complete
*ESR (Event Status Register)
Query *ESR?
The *ESR query returns the contents of the Standard Event Status Register.
Reading the register clears the Standard Event Status Register.
Returned Format
<status><NL>
<status> An integer from 0 to 255
Example If a command error has occurred, and bit 5 of the ESE register is set, the
string variable Esr_event$ will have bit 5 (the CME bit) set.
10 OUTPUT XXX;"*ESE 32 !Enables bit 5 of the status register
20 OUTPUT XXX;"*ESR?" !Queries the status register
30 ENTER XXX; Esr_event$ !Reads the query buffer
Common Commands
*ESR (Event Status Register)
9–7