Micromod Micro-DCI: 53ML5100 Manual Loader - Manual (Page 33)

53ML5100B Manual Loader
INSTRUCTION MANUAL
29
4 CONFIGURATION PARAMETERS
The configuration parameters provide the latitude to define the instrument’s personality attributes, so that
while still functioning within its designed specifications, it can perform application requirements with greater
refinement. Typical configuration parameters are the instrument’s indicator zero point and span, the display
tag names, engineering units of the displayed process value, and alarm limits, etc. IT IS NOT NECESSARY
TO DEFINE ALL OF THE CONFIGURATION PARAMETERS, as commonly used preset values may not have
to be altered and certain parameter selections eliminate others.
Although all resident in a memory database as datapoints, the configuration parameters are clustered into
modular groups that may have specific hardware identities (e.g., the ANI0&1 and ANO0&1 circuits illustrated
in Figures 4-1 and 4-2), or may represent software controlled functions that are not specific to any one
hardware element.
4.1 Datapoint Types
A parameter can be any one of five data types. Each data type represents a specific data format:
integers, alphanumeric text strings, etc. A database module containing multiple parameters can
have a mix of data types. The data types are defined in Table 4-1 as follows:
Table 4-1. Datapoint Types
Type Byte
Size
Format
L 1 Bit Represents a single binary bit that can have the value of 0 or 1.
B 1 Represents a positive integer with values from 0 to 255.
C 3 Represents a real analog (floating point) value that has a resolution of one part in
32,768 (15 bits) and a dynamic range of ± 10
38 .
H 5 Represents a high precision analog (floating point) value that has a resolution of
one part in 2 billion (31 bits) and a dynamic range of ± 10
38 .
A 10 Represents a text string that can be 10 characters long.
4.2 Factory Standard Calibration
The instrument is shipped from the factory configured with all parameters set to the default values. The
default values are listed in the parameter tables under the heading Default. The gray-tone shading in a
default cell of a parameter indicates the contents of the datapoint are left unchanged after the database is
returned to the default condition using the procedure described in Section 5.5. Examples of datapoints
unaltered by default are the Calibrate Zero and Calibrate Span parameters which are factory set.
4.3 Configuring the Database Modules
The datapoints in the database modules must be changed to reflect required alterations in the factory
standard configuration or when the instrument is re-configured. There are generally two datapoint parameter
types contained in the four database modules. The four database modules are described in Table 4-2.
Although it is not an absolute criterion, it is assumed the modules will be configured in the table Item order.
Table 4-2 is also a pointer to the descriptions of the database modules; the descriptions are presented
as Tables 4-3 through 4-10. (The gray tone shading in the default cell of a datapoint indicates the datapoint
contents are left unchanged after default. See Section 5.5 for the default procedure.)