Capabilities; Foundation Fieldbus Function Blocks - Emerson Rosemount Reference Manual

Section 4: F fieldbus Configuration
OUNDATION
April 2014
4.3.5

Capabilities

Virtual Communication Relationship (VCRs)
There are 20 VCRs, where one is permanent and 19 are fully configurable by the host system.
Also, thirty link objects are available.
Table 4-1. Network Parameters
Network parameter
Slot Time
Maximum Response Delay
Maximum Inactivity to Claim LAS Delay
Minimum Inter DLPDU Delay
Time Sync class
Maximum Scheduling Overhead
Per CLPDU PhL Overhead
Maximum Inter-channel Signal Skew
Required Number of Post-transmission-gab-ext Units
Required Number of Preamble-extension Units
Block execution times
Block
Resource
Transducer
LCD display Block
Advanced Diagnostics
Analog Input 1, 2, 3
PID 1 and 2 with Autotune
Input Selector
Signal Characterizer
Arithmetic
Output Splitter
4.4 F
OUNDATION
For reference information on the resource, sensor transducer, AI, LCD display transducer blocks
refer to
the function block manual (Document No. 00809-0100-4783).
Resource block (index number 1000)
The resource function block (RB) contains diagnostic, hardware, and electronics information.
There are no linkable inputs or outputs to the resource block.
142
fieldbus function blocks
"Function blocks" on page
Value
4 (1 ms)
Execution time
–
–
–
–
60 ms
90 ms
65 ms
60 ms
60 ms
60 ms
201. Reference information on the PID block can be found in
Reference Manual
00809-0100-4021, Rev GC
8
2
32
8
10
4
0
0
1
Foundation™ fieldbus configuration