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A.13 *sre? — service request enable query, A.14 *stb? — status byte register query, A.15 *trg — trigger command – KEPCO KLP Series (older -1200 models) Operator Manual User Manual

Page 85: A.16 *tst? — self test query, A.13, A.14, A.15, A.16

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KLP 073008

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A.13 *SRE? — SERVICE REQUEST ENABLE QUERY

*SRE?

Syntax:

*SRE?

Response: = value from 0 - 255 per Table A-3.

Description: Reads the Service Enable Register. Used to determine which events of the Status Byte Register are

programmed to cause the power supply to generate a service request (1 = set = function enabled, 0 =
reset = function disabled). Related Commands: *SRE, *STB? (See example, Figure A-1.)

A.14 *STB? — STATUS BYTE REGISTER QUERY

*STB?

Syntax:

*STB?

Response: value from 0 to 255 per Table A-3.

Description: Reads Status Byte Register without clearing it. This Query reads the Status Byte Register (bit 6 =

MSS) without clearing it (1 = set = function enabled, 0 = reset = function disabled). The register is
cleared only when subsequent action clears all set bits. MSS is set when the power supply has one
ore more reasons for requesting service. (A serial poll also reads the Status Byte Register, except that
bit 6 = RQS, not MSS; and RQS will be reset.) Related Commands: *SRE, *SRE?. (See example, Fig-
ure A-1.)

A.15 *TRG — TRIGGER COMMAND

*TRG

Syntax:

*TRG

Description: Triggers the power supply to be commanded to preprogrammed values of output current and

voltage. When the trigger is armed (checked by examining WTG bit in Status Operational Condition
register) *TRG generates a trigger signal. The trigger will change the output of the power supply to the
output voltage and current levels specified by VOLT:TRIG and CURR:TRIG commands and clear the
WTG bit in the Status Operation

Condition register. If INIT:CONT has been issued, the trigger

subsystem is immediately rearmed for subsequent triggers, and the WTG bit is again set to

1. *TRG or GET are both addressed commands (only devices selected as listeners will exe-

cute the command).

Related Commands:

ABOR, INIT, TRIG, CURR:TRIG, VOLT:TRIG.

(See

example, Figure A-1.

)

A.16 *TST? — SELF TEST QUERY

*TST?

Syntax:

*TST?

Returned value: 0 or 1 (0 = pass test, 1 = fail test)

Description:

Power Supply test.This query causes the power supply to do a self test and provide the controller
with pass/fail results. A cyclic redundancy check (CRC) is performed on non-volatile RAM. A “1” is
returned if there is an error.

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