Technical data

26 N9320A Programmer’s Guide

3 Status Registers

Standard Event Status Register

The standard event status register is used to determine the

specific event that sets bit 5 in the status byte register. The

standard event status register does not have negative and

positive transition registers, nor a condition register. Use the

IEEE common commands at the beginning of “Command

Reference” on page 49 to access the register.

To query the standard event status register, send the *ESR

command. The response will be the decimal sum of the bits

which are set to 1. For example, if bit number 7 and bit

number 3 are set to 1, the decimal sum of the 2 bits is 128

plus 8. So the decimal value 136 is returned.

See “Setting and Querying the Status Register” on page 23

for more information.

Figure 2 Standard Event Status Register Diagram

Operation Complete

Request Bus Control

Query Error

Device Dependent Error

Execution Error

Command Error

User Request

Power On

0 1 2 3 4 5 6 7

Event Enable Register

1 2

3 4 5 6 7

To Status Byte Register bit #5

Standard Event

Status Register