Operation
GPIB Operation
32 Operating Manual for GPIB for XPD Series Power Supply
Serial Poll In a serial poll, the controller polls each device.
Example:
The power supply responds with a 8-bit status byte defined as follows:
Table 3.2 Serial Poll Status Register
ibrsp Return serial poll byte.
Bit
Position
Decimal
Weight
Description Reset By
0 (LSB) 1 Fault - Set when any bit in the fault
register is set by a fault condition in the
supply. See also
“Accumulated
Status, Status, and Fault Registers”
on page 46
.
FAULT? query to reset
1 2 Not used
2 4 Not used
3 8 Not used
416Ready - Set when power supply is
ready to accept commands.
Power supply, during
command processing
period
532Error (ERR) - Set when ERR bit
asserted in status register. See also
“Accumulated Status, Status, and
Fault Registers” on page 46
.
ERR? query
664Request Service (SRQ) - Set when
power supply requests service.
Serial Poll
7 (MSB) 128 Power On (PON) - Set when unit
initializes at power on.
CLR or Device Clear
