Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Instruction Manual - Manual (Page 146)

5.0 CONFIGURATION PARAMETERS
The configuration parameters provide the latitude to define the controller’s personality attributes,
so that while still functioning within its designed specifications, it can perform application require-
ments with greater refinement. Typical configuration parameters are the fine tuning variables to
set the controller’s responsiveness; the indicator zero point and span; the display tag names; engi-
neering units of the process variable; and alarm limits, etc.
IT IS NOT NECESSARY TO DEFINE
ALL OF THE CONFIGURATION PARAMETERS, as commonly used default values may not have
to be altered, certain parameter selections eliminate others, and the process application itself may
not require specific controller attributes. Although all resident in a memory database as
data-
points, the configuration parameters are clustered into modular groups as shown in Figure 5-1.
5.1 READY TO USE CONTROL STRATEGIES
Ready to use control strategies are listed in Table 5-1. More information about these control strate-
gies is provided in their respective sections.
Table 5-1. Ready to Use Control Strategies
CS Title Section
1 Single Loop Controller 6
20 Two Loop Controller 11
41 Four Loop Controller 15
5.2 DATAPOINT TYPES
A parameter can be any one of six 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 5-2 as follows:
Table 5-2. 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 real analog (floating point) values that have a resolution of one part
in 32,768 (15 bits) and a dynamic range of
±
10
38
.
H 5 Represents high precision analog (floating point) values that have a resolution of
one part in 2 billion (31 bits) and a dynamic range of
±
10
38
.
A 10 Represents text strings that can be 10 characters long.
F 5 Represents text strings that can be 5 characters long.
Section 5. Configuration Parameters
5-1