Bit Assignments For The Esr And Ese - Fluke 525A User Manual

Bit Assignments for the ESR and ESE

The bits in the Event Status Register (ESR) and Event Status Enable register (ESE)
are assigned as shown in Figure 4-7.
15 14
0 0
7 6
PON 0
PON Power on. This bit is set to 1 if line power has been turned off and on since the last
time the ESR was read.
CME Command error. The 525A's IEEE-488 interface encountered an incorrectly formed
command. (The command ERR? fetches the earliest error code in the error queue,
which contains error codes for the first 15 errors that have occurred.)
EXE Execution error. An error occurred while the 525A tried to execute the last command.
This could be caused, for example, by a parameter being out of range. (The command
ERR? fetches the earliest error in the error queue, which contains error codes for the
first 15 errors that have occurred.)
DDE Device-dependent error. An error related to a device-dependent command has
occurred.
QYE Query error. The 525A was addressed to talk when no response data was available or
appropriate, or when the controller failed to retrieve data on the output queue.
OPC Operation complete. All commands previous to reception of a *OPC c ommand have
been executed, and the interface is ready to accept another message.
Figure 4-7. Event Status Register (ESR) and Event Status Enable (ESE)
13 12
0 0
5 4
CME EXE
Checking 525A Status
11 10
0 0
3 2
DDE QYE
Remote Operation
9 8
0 0
1 0
0 OPC
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