Industrial Gaussmeter IGM11 Operating Instructions
Chapter 9 Serial Interfaces
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9.10.3.6
Output Data Format
Output data have the format that is shown in the following table. Output data are
always terminated with a
<CR>
character followed by an
<LF>
character.
Type of Output Data
Output Data Format
Query
<
Parameter
><CR><LF>
Text
"Character string" <CR><LF>
Numerical Value
+D.DD<CR><LF>
with D = 0..9
9.10.4
SCPI Status Model
The status system records different device states in several register groups. The
individual messages are grouped in the several registers. One bit of these registers is
related to one message respectively.
The IGM11 has three different event registers:
•
measurement event register
•
error event register
•
standard event register
The measurement event register stores the messages relevant for the measurement.
The error event register stores the error messages and the standard event register
stores the SCPI standard messages.
In addition to the event registers, there are further registers which serve for linking of
registers and will be explained in the following:
9.10.4.1
Event Register
The event register can only be read. The signal bits are set by the device but are not
deleted automatically.
Bits in an event register are deleted either by inquiring this register (*ESR? or e.g.
:STAT:QUES:EVEN?) or by the *CLS command. When inquiring an event register, the
device emits a decimal value that corresponds to the sum of the binary place values
of all bits that are set in this register.
9.10.4.2
Release Register
The single bits of the assigned event registers are masked via the release registers
(AND operation). Only the released bits enter into the sum bit as an OR operation.
The release registers are read- and writeable. The release registers are not deleted
by a query. The *CLS command does not delete the release registers. The command
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