Event Status Register; Bit Assignments For The Esr And Ese - Fluke 5700A Series II Operator's Manual

5-28. Event Status Register

The Event Status Register is a two-byte register in which the higher eight bits are always
0, and the lower eight bits except bits 6 and 1 represent various conditions of the
calibrator. The ESR is cleared (set to 0) when the power is turned on, and every time it is
read.
A mask register called the Event Status Enable register (ESE) allows the controller to
enable or mask (disable) each bit in the ESR. When a bit in the ESE is 1, the
corresponding bit in the ESR is enabled. When any enabled bit in the ESR is 1, the ESB
bit in the Serial Poll Status Byte also goes to 1. The ESR bit stays 1 until the controller
reads the ESR or does a device clear, a selected device clear, or sends the reset or *CLS
command to the calibrator. The ESE is cleared (set to 0) when the power is turned on.

5-29. Bit Assignments for the ESR and ESE

15 14
0 0
7 6
PON 0
PON Power on. This bit is set to 1 if the power supply has been turned off and on
since the last time the ESR was read.
CME Command error (fault). The calibrator's IEEE-488 interface encountered an
incorrectly formed command. (The command FAULT? fetches the earliest fault
code in the fault queue, which contains fault codes for the first 15 faults that have
occurred.)
EXE Execution error (fault). A fault occurred when the calibrator tried to execute the
last command. One possible cause for this error is a parameter that's out of
range. (The command FAULT? fetches the earliest fault in the fault queue, which
contains fault codes for the first 15 faults that have occurred.)
DDE Device-dependent error (fault). A fault related to a device-dependent command
has occurred. One possible cause for this error would be an attempt to execute
"OUT 1000000V", which is outside the calibrator's range. (The command
FAULT? fetches the earliest fault in the fault queue, which contains fault codes
for the first 15 faults that have occurred.)
QYE Query error (fault). The calibrator 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 an *OPC command
have been executed, and the interface is ready to accept another message.
13 12
0 0
5 4
CME EXE
Checking the Calibrator's Status
11 10
0 0
3 2
DDE QYE
Remote Operation
9 8
0 0
1 0
0 OPC
5
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