Fluke 5502A - Program the ESR and ESE

5502A
Operators Manual
5-42
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.
Command error. The IEEE-488 interface of the 5502A 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.)
Execution error. An error occurred while the 5502A 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.)
Device-dependent error. An error related to a device-dependent command has
occurred.
Query error. The 5502A was addressed to talk when no response data was available
or appropriate, or when the controller failed to retrieve data on the output queue.
Operation complete. All commands previou
s to reception of a *OPC c ommand have
been executed, and the interface is ready to accept another message.
PON
CME
EXE
DDE
QYE
OPC
15 14 13 12 11 10 9 8
00000000
76543210
PON 0 CME EXE DDE QYE 0 OPC
gjh048.eps
Figure 5-10. Event Status Register (ESR) and Event Status Enable (ESE)
Program the ESR and ESE
To read the contents of the ESR, send the remote command, *ESR?. The ESR is cleared
(set to 0) each time it is read. To read the contents of the ESE, send the remote command,
*ESE?. The ESE is not cleared when it is read. When you read the registers, the
Calibrator answers by sending a decimal number that when change to binary shows bits 0
through 15. The subsequent sample BASIC program gets the contents of each register:
10 ! THIS PROGRAM READS THE ESR AND THE ESE REGISTERS
20 PRINT @6, “*ESR?” ! ASK FOR THE ESR CONTENTS
30 INPUT @6, A% ! RETRIEVE THE REGISTER CONTENTS
40 PRINT @6, “*ESE?” ! ASK FOR THE ESE CONTENTS
50 INPUT @6, B% ! RETRIEVE THE REGISTER CONTENTS
60 PRINT “ESR = “;A% ! DISPLAY THE ESR REGISTER CONTENTS VALUE
70 PRINT “ESE = “;B% ! DISPLAY THE ESE REGISTER CONTENTS VALUE
80 END