Remote Commands
Introduction
6
6-3
6-1. Introduction
This chapter documents the IEEE-488/RS-232 remote commands for the 5520A
Calibrator (hereafter referred to as “the Calibrator”). Remote commands duplicate
activities that can be initiated from the front panel in local operation. Following the
summary table is a complete alphabetical listing of all commands complete with
protocol details. Separate headings in the alphabetical listing provide the parameters and
responses, plus an example for each command. For information on using commands, see
Chapter 5, “Remote Operation.”
6-2. Command Summary by Function
6-3. Common Commands
*CLS (Clear status.) Clears the ESR, ISCR0, ISCR1, the error queue, and the RQS bit in the
status byte. This command terminates pending operation complete commands (*OPC
or *OPC?).
*ESE Loads a byte into the Event Status Enable register.
*ESE? Returns the contents of the Event Status Enable register.
*ESR? Returns the contents of the Event Status Register and clears the register.
*IDN? Identification query. Returns instrument model number, serial number, and firmware
revision levels for the main and front panel CPUs, and inguard PGA.
*OPC Enables setting of bit 0 (OPC for "Operation Complete") in the Event Status Register to
1 when all pending device operations are complete.
*OPC? Returns a 1 after all pending operations are complete. This commands causes program
execution to pause until all operations are complete. (See also *WAI.)
*OPT? Returns a list of the installed hardware and software options.
*PUD Protected user data command. This command allows you to store a string of bytes in
nonvolatile memory. This command works only when the CALIBRATION switch is in
the ENABLE position.
*PUD? Returns the contents of the *PUD (Protected User Data) memory.
*RST Resets the state of the instrument to the power-up state. This command holds off
execution of subsequent commands until it is complete. (Overlapped command.)
*SRE Loads a byte into the Service Request Enable register (SRE).
*SRE? Returns the byte from the Service Request Enable register.
*STB? Returns the status byte.
*TRG Changes the operating mode to thermocouple MEASURE, triggers a measurement,
and returns the value of the measurement. This command is equivalent to sending
"TC_MEAS;*OPC;VAL?".
*TST? Initiates a series of self-tests, then returns a "0" for pass or a "1" for fail. If any faults
are detected, they are logged into the fault queue where they can be read by the ERR?
query.
*WAI Prevents further remote commands from being executed until all previous remote
commands have been executed.
To Next Page
Loading...
