FVP 110 Fieldbus Valve Positioner Manual
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GE Energy
Link Master
A link master (LM) is any device containing a link active scheduler (Figure 76). There
must be at least one LM on a segment. When the LAS on a segment has failed, another
LM on the same segment starts working as the LAS.
Figure 76
Example of Fieldbus Configuration-3 LMs on Same Segment
Transfer of LAS
There are two procedures for an LM to become the LAS:
❑
If the LM whose value of [V(ST)V(TN)] is the smallest on a segment, with the
exception of the current LAS, judges that there is no LAS on the segment, such as
when the segment has started up or when the current LAS has failed, the LM
declares itself as the LAS. With this procedure, an LM backs up the LAS as shown
in Figure 77.
❑
The LM whose value of [V(ST)V(TN)] is the smallest on a segment, with the
exception of the current LAS, requests the LAS on the same segment to transfer
the right of being the LAS.
Figure 77
Backup of LAS
Summary of Contents for FVP110
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Page 97: ...81 Dimensions Standard Specifications Dimensions Figure 46 Single Acting Actuator Dimensions ...
Page 99: ...83 Dimensions Standard Specifications Figure 48 Terminal Configuration ...
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Page 115: ...99 View Object Configuration Table 11 View Object for Transducer Block continued ...
Page 117: ...101 View Object Configuration Table 18 View Object for AO Function Block ...
Page 119: ...103 View Object Configuration Table 20 View Object for OS Function Block ...
Page 121: ...105 View Object Configuration Table 22 View Object for Resource Block ...
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Page 238: ...FVP 110 Fieldbus Valve Positioner Manual 222 GE Energy Table 72 LM Parameter Part List ...
Page 239: ...223 LM Parameter List Link Master Functions ...
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Page 262: ...FVP 110 Fieldbus Valve Positioner Manual 246 GE Energy Table 85 Download Error Codes ...
Page 265: ...249 Comments on System Network Software Download Table 88 DOMAIN_DESCRIPTOR ...
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Page 289: ...273 H Customer Maintenance Parts List ...
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