Flowserve 400MD Logix - Manual (Page 66)

• Methods Wizard to help configure and commission the positioner
Standard and Device-specific DD
Standard DD descriptions for function blocks and transducer blocks are maintained by the Fieldbus Foundation. These descriptions can be
used as part of a field device DD by manufacturers to describe the standard features of their devices. Device-specific descriptions are devel-
oped by manufacturers to describe custom features which are unique to that particular device.
These two types of DDs (the standard and device-specific) can then be combined to provide a complete DD for the field device.
8.21 Object Dictionary
Object Dictionary Description
AP objects are described in the Object Dictionary (OD) with each entry describing an individual AP object and its message data. The message data may
consist of a number of characteristics defined for that particular object. The OD allows the FBAP of a device to be visible to the fieldbus communica tions
system. Refer to the Fieldbus documentation for more information about OD.
8.22 System Management
System Management (SM) operates on special objects in the System Management Information Base (SMIB) which is part of the Management Virtual
Field Device (VFD).
System Management Key Features
The key features of system management operation:
• Provide system application clock time synchronization
• Provide scheduling of function blocks
• Manage automatic device address assignment
• Provide tag search service
• System Management Information Base (SMIB)
The SMIB contains various objects that are associated with system management operation. Table 8.22 shows a listing of the SMIB object
dictionary. Groups of objects (along with their starting index number) are included in the SMIB for the Logix 3400MD digital positioner. The
numbers in parenthesis indicate the number of objects.
Supported Features
The features supported by system management include the key features listed above as well as the ones designated in Table 8.23. The object SM_SUP-
PORT indicates which features are supported by system management in the FBAP. The features are mapped to the bits in the bit string shown below.
Table 8.21 System Management Supported Features
SM_SUPPORT bit Feature Supported?
0 Set physical device tag (agent) yes
1 Set field device address (agent) yes
2 Clear address (agent) yes
3 Identify (agent) yes
4 Locating function blocks (agent) yes
5 Set physical device tag (manager) no
6 Set field device address (manager) no
7 Clear address (manager) no
Logix 3400MD Digital Positioner LGENIM3405-02 11/13
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