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Table 9-3 shows the Standard Event Status Register. The table details the

meaning of each bit position in the Standard Event Status Register and the

bit weight. When you read Standard Event Status Register, the value

returned is the total bit weight of all the bits that are high at the time you

read the byte.

Table 9-3

Standard Event Status Register

Bit Position Bit Weight Bit Name Condition

7 128 PON 0 = register read - not in power up mode

1 = power up

6 64 URQ 0 = user request - not used - always zero

5 32 CME 0 = no command errors

1 = a command error has been detected

4 16 EXE 0 = no execution errors

1 = an execution error has been detected

3 8 DDE 0 = no device dependent errors

1 = a device dependent error has been detected

2 4 QYE 0 = no query errors

1 = a query error has been detected

1 2 RQC 0 = request control - not used - always zero

0 1 OPC 0 = operation is not complete

1 = operation is complete

Common Commands

*ESR (Event Status Register)

9–8

HP 16500C Programmer's Guide

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