Keysight Technologies E5260 Series, Programming Manual

Page: 51 / 350

Keysight E5260/E5270 Programming Guide, Edition 4 1- 39
Programming Basics
Status Byte
Status Byte
Status byte bits are turned off or on (0 or 1) to represent the instrument operation
status. When you execute a serial poll, an external computer (controller) reads the
contents of the status byte, and responds accordingly. When an unmasked status bit
is set to “1”, the instrument sends an SRQ to the controller, causing the controller to
perform an interrupt service routine.
Bit
Decimal
Value
Description
0 1 Data Ready
Indicates whether the output buffer is empty. If an unread
data or query response exists, this bit is set to “1”. It is set
to “0” when all the stored data has been transferred to the
controller, or when the E5260/E5270 receives a *RST, BC,
FMT, or device clear command.
1 2 Wait
Indicates whether the instrument is in the wait status. This
bit is set to “1” when the E5260/E5270 has been set to the
wait state by the PA, WS, PAX, or WSX command. It is set
to “0” when the waiting condition is complete, or when the
E5260/E5270 receives a *RST or device clear command.
2 4 Not used. This bit is always set to “0”.
3 8 Interlock Open
If the interlock circuit is open, and a voltage output or
voltage compliance setup value exceeds ±42 V, this bit is
set to “1” . It is set to “0” when the E5260/E5270 receives
a serial poll, *RST, or device clear command.
4 16 Set Ready
If the E5260/E5270 receives a GPIB command or a trigger
signal, this bit is set to “0”. It is set to “1” when its
operation is completed. This bit is also set to “0” when the
self-test or calibration is started by front panel operation,
and set to “1” when it is completed.