Bird Technologies 6091P - Manuale (Pagina 44)

GPIB Commands
The activity on the bus is managed under the control of messages or commands. The
instruments operation is divided into two sets of function; general interface functions
and device dependent functions. General interface functions insure the instrument
responds correctly with respect to the GPIB signal lines. Device dependent functions
are used for specific instrument control, such as taking a power measurement.
General Interface
Commands
Table 7 below lists general GPIB interface commands applicable to the calorimeter.
The syntax for executing general commands varies among controllers; check the doc-
umentation supplied with your controller for the proper command structure.
Bird Model 6091 Calorimeter
32
Command Syntax Function
Remote ENable REN Enables remote operation.
Go To Local GTL Enables local operation.
Local LockOut LLO Disables local operation.
InterFace Clear IFC Ends bus activity, returns
control to GPIB controller.
Device CLear DCL Resets device command
status.
Selective Device Clear SDC Clears command status of
selected devices.
Group Execute Trigger GET Starts measurement cycle
for devices set to trigger
on GET.
Serial Poll Enable SPE Send device status bytes
to controller.
Serial Poll Disable SPD Clears controller status
bytes and turns off serial
poll.
Table 7
General
Interface
Commands
Remote ENable (REN)
Function Enables remote operation.
Remarks Unit must be addressed to listen after setting REN true.
Remote annunciator lights when device is remoted.
Flow,
∆
T, ON/OFF buttons are disabled.
Press LOCAL/ADDRESS button to return to local mode.
Statements National GPIB-PCII HP 200/300
V%=1 REMOTE 724
CMD$=CHR$(56)
CALL IBSRE (BRD%,V%)
CALL IBWRT (BRD%,CMD$)