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18. Appendix I
18.2. Description
(SMK) also has direct access to the data link layer when communicating through its
System Management Kernel Protocol (SMKP).
The Fieldbus physical layer consists of the physical medium and the signaling protocol
used to transmit data. All fieldbus devices contain at least one physical layer entity, as
does each port in a bridge device.
Physical layer protocols provide the data link layer protocol the ability to send and
receive data independent of the physical medium type.
More detailed information
It is beyond the scope of this document to provide detailed information about the key
components of the F
provided in Fieldbus Foundation specifications. Please visit their website for more
information http://www.fieldbus.org/.
18.2 Description
Parameters for Link Configuration in Project Mode
The following table summarizes the parameters that are user configurable through the
LINK Block configuration form in the Project Mode. These parameters let you uniquely
identify the Link component in the control strategy and tune the performance of Link
communications. Only the Link parameters that are user configurable are listed.
We recommend that you accept the default values listed for parameters on the System
Management and Network Management (LM) tabs, unless you have prior experience
with the devices you are adding to the Link. The default settings were carefully chosen to
provide the most logical initial settings for most applications. It is more efficient to make
any needed adjustments to these parameters in the Monitoring mode.
Tab
Main
Name
(NAME)
Description
(DESC)
540
Experion PKS Series A Fieldbus Interface Module User's Guide
Fieldbus system architecture. This information is
OUNDATION
Parameter
Default Value
LINKxxx
(Where xxx
equals a valid
number)
Blank
Honeywell
Description
User defined name starting with
a letter and consisting of up to
16 characters that must be
unique within the system.
User defined descriptive text
consisting of up to 132
characters.
July 2010
R400
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