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Reference Manual
00809-0100-4001, Rev JA
Appendix A: Reference Data
November 2012
Specifications and reference data
A.2.6
F
OUNDATION
fieldbus function block execution times
A.2.7
F
OUNDATION
fieldbus Parameters
A.2.8
Standard Function Blocks
Resource Block
Contains hardware, electronics, and diagnostic information.
Transducer Block
Contains actual sensor measurement data including the sensor diagnostics and the ability to
trim the pressure sensor or recall factory defaults.
LCD Block
Configures the local display.
2 Analog Input Blocks
Processes the measurements for input into other function blocks. The output value is in
engineering units or custom and contains a status indicating measurement quality.
PID Block
Contains all logic to perform PID control in the field including cascade and feedforward.
Block
Execution Time
Resource
-
Transducer
-
LCD Block
-
Analog Input 1, 2
30 milliseconds
PID
45 milliseconds
Input Selector
30 milliseconds
Arithmetic
35 milliseconds
Signal Characterizer
40 milliseconds
Integrator
35 milliseconds
Schedule Entries
7 (max.)
Links
20 (max.)
Virtual Communications Relationships (VCR)
12 (max.)
Содержание Rosemount 3051
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