Owner manual

ABC 040104
A-1
APPENDIX A - IEEE 488.2 COMMAND/QUERY DEFINITIONS
A.1 INTRODUCTION
This appendix defines the IEEE 488.2 commands and queries used with the ABC Power Supply
These commands and queries are preceded by an asterisk (*) and are defined and explained in
Figures A-1 through A-14, arranged in alphabetical order. Table A-1 provides a quick reference of
all IEEE 488.2 commands and queries supported in the ABC Power Supply.
A.2 *CLS — CLEAR STATUS COMMAND
*CLS
Syntax: *CLS
Description: Clears status data. Clears the error queue of the instrument. It also clears the following registers
without affecting the corresponding Enable Registers: Standard Event Status Register (ESR), Opera-
tion Status Event Register, Questionable Status Event Register, and Status Byte Register (STB).
Related commands: *OPC, *OPC?. (See example, Figure A-1.)
A.3 *ESE — STANDARD EVENT STATUS ENABLE COMMAND
*ESE
Syntax: *ESE <integer> where <integer> = positive whole number: 0 to 255 per Table A-2.
Default Value: 0
Description: This command programs the standard Event Status Enable register bits. The contents function
as a mask to determine which events of the Event Status Register (ESR) are allowed to set the ESB
(Event Summary Bit) of the Status Byte Register. Enables the Standard events to be summarized in
the Status Byte register (1 = set = enable function, 0 = reset = disable function). All of the enabled
events of the standard Event Status Enable register are logically ORed to cause ESB (bit 5) of the
Status Byte Register to be set (1 = set = enable, 0 = reset = disable)
.
(See example, Figure A-1.)
TABLE A-1. IEEE 488.2 COMMAND/QUERY INDEX
COMMAND PAR. COMMAND PAR.
*CLS A.2 *RST A.11
*ESE, ? A.3, A.4 *SAV A.12
*ESR? A.5 *SRE, ? A.13, A.14
*IDN? A.6 *STB? A.15
*OPC, ? A.7, A.8 *TRG A.16
*OPT A.9 *TST? A.17
*RCL A.10
TABLE A-2. STANDARD EVENT STATUS ENABLE REGISTER AND
STANDARD EVENT STATUS REGISTER BITS
CONDITION PON NU CME EXE DDE QUE NU OPC
BIT 76543210
VALUE 128 64 32 16 8 4 2 1
PON Power On
NU (Not Used)
CME Command Error
EXE Execution Error
DDE Device Dependent Error
QUE Query Error
OPC Operation Complete