Manual

BIT 232 022800
A-7
FIGURE A-11. *STB? — STATUS BYTE REGISTER QUERY
FIGURE A-12. *TRG — TRIGGER COMMAND
Syntax:
*STB?
Response:
<integer> value from 0 to 255 per table below
Function
: Read Status Byte Register without clearing it
Description:
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; ands RQS will be reset.)
Example:
*STB? Power supply responds with 96 (64 + 32) to indicate MSS and the Event Status
Byte summary bit have been set.
STATUS BYTE REGISTER BITS
CONDITION N#HI
MSS
RQS
ESB MAV NODE NUMBERS (ADDRESS)
BIT 7 6543210
VALUE 128 64 32 16 8 4 2 1
*STB?
N#HI Node number high
MSS Master Status Summary
RQS Request for Service
ESB Event Status Byte summary
MAV Message available
Syntax:
*TRG
Function
: Triggers the power supply to be commanded to preprogrammed value of output current and voltage.
Description:
This command causes the power supply to be commanded to the output voltage and current levels
specified by VOLT:TRIG and CURR:TRIG commands, respectively (see Figures B-13 and B-9).
Example 1:
VOLT 25 Power supply voltage commanded to 25V.
VOLT:TRIG 15 Programs power supply voltage to 15V when *TRG received.
INIT Trigger event is initialized.
*TRG Power supply reverts to commanded output voltage of 15V.
*TRG