Agilent Technologies 6028A, 6035A, 6033A, 603xA, 6023A Rqs Err Rdy Pon Fau, SPOLLRESP= Spoll @PS

Condition		∙	RQS	ERR	RDY	∙	∙	PON	FAU
Bit position	7		6	5	4	3	2	1	0
Bit Weight	128		64	32	16	8	4	2	1
Where	∙ - Not Used

FAU - Fault Condition

PON - Power on Reset

RDY - Ready to Process Commands

ERR - Programming Error

RQS - Requesting Service

The ERR bit is set when a remote programming error is detected and is cleared when the "ERR?" device command is received. (See the section on detecting programming errors.)

The FAU bit is the logical OR of all the bits in the fault register. It is cleared when the "FAULT?" device command is received. (Provided the remote inhibit (INH) line is false).

The FAU bit can thus be used in conjunction with the fault and mask registers to give the programmer a rapid indication that a user-defined fault has occurred.

The RDY bit is cleared when the Agilent603XA is busy processing commands and set when the processing is completed.

The PON bit is set when power is first applied to the power supply and is cleared upon receipt of the "CLR" device command or the device clear interface management command.

RQS indicates that the supply has requested service. A serial poll will clear this bit.

The power supply can be serial polled by assigning the serial poll response to a variable:

SPOLL_RESP= SPOLL (@PS)

EXAMPLE 6: Use of serial poll to determine whether the supply passed through or into overrange mode. This program differs from the previous example only in the method of reading status. Serial poll is useful because it can be performed within a program line and is much faster than reading a status register. The greater speed is balanced by the level of status information available. If the user does not want to use interrupts from the power supply serial poll can provide the same information with periodic checking.

10	ASSIGN @Ps TO 705
20	OUTPUT @Ps;"CLR;UNMASK OR’’
30	!
40	!
50	! D0 PROGRAM
60	!
70	!
80	IF BIT (SPOLL(@Ps),0) THEN
90	PRINT "SUPPLY ENTERED OR MODE"

100END IF

110END

Explanation:

10:Assign I/O path name to power supply

20:Initialize power supply, set ’OR’ bit in mask register

80-100:Conduct serial poll, compare to OR bit if both true, print message

Note: Fault register must be cleared with "FAULT?" query

Programming the Agilent 603xA Power Supplies Using Basic 121