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Remote Operation
Checking 525B Status
4
4-21
Table 4-10. Response Data Types
Data Type Description
Integer Integers for some controllers or computers are decimal numbers in the range
-32768 to 32768.
Responses in this range are labeled Integer.
Example: *ESE 123; *ESE?
Returns: 123
Floating Numbers that may have up to 15 significant figures plus an exponent that may
range from ±E20.
Example: OUT?
Returns: 1.429300E+00
Character
Response
Data (CRD)
This type of response is always a keyword.
Example: OUT 1V; FUNC?
Returns: DCV
Indefinite
ASCII (IAD)
Any ASCII characters followed by EOM. Queries with this type of response MUST
be the last Query in a program message.
Example: *IDN?
Returns: FLUKE,525B,<serial number>,<firmware version>
Checking 525B Status
You have access to status registers, enable registers, and queues in the Calibrator
to indicate various conditions in the instrument as shown in Figure 4-5. Some
registers and queues are defined by the IEEE-488.2 standard. The rest are specific
to the Calibrator. In addition to the status registers, the Service Request (SRQ)
control line, and a 16-element buffer called the Error Queue provide status
information. Table 4-11 lists the status registers and gives the read/write
commands and associated mask registers.
Table 4-11. Status Register Summary
Status Register Read
Command
Write
Command
Serial Poll Status Byte (STB) *STB? ⎯
Service Request Enable Register (SRE) *SRE? *SRE
Event Status Register (ESR) *ESR? ⎯
Event Status Enable Register (ESE) *ESE? *ESE
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