AMETEK SFA Series Programming Manual - Manual (Page 13)

SECTION 3
3.1
3.2
3.2.1
IEEE 488.2 AND SCPI
COMMAND OPERATION
Introduction
The following sections describe the operation of the DIA by remote programming using the DIA
IEEE-488.2 and SCPI command sets. The DIA IEEE488.2 and SCPI command sets provide
programming, query, and status commands that facilitate remote control of the power supply.
IEEE-488.2 Register Definitions
The DIA supports the IEEE-488.2 and SCPI 1995.0 status reporting data structures. These
structures are comprised of status registers and status register enable mask pairs. The
following sections describe these pairs.
SCPI Status Byte
The SCPI Status Byte status register can be read by the *STB? command or by issuing a GPIB
serial poll. The Status Byte status register can be cleared by the use of the *CLS command.
The DIA can be configured to request service from the GPIB controller by setting the
appropriate bits in the Service Request Enable Register (SRE). The SRE register has the same
bit pattern as the Status Byte. It is modified using the *SRE command and read with
the *SRE? command. For example, if the SRE register is set to 0x10 (MAV), when the DIA unit
has a message available, the Status Byte register will contain 0x50 (RQS and MAV) and the
SRQ line of the GPIB will be asserted to indicate a request for service. See table below, and
refer to Section 5 for further information.
M550292-03 (Programming) 3-1