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FVP 110 Fieldbus Valve Positioner Manual
218
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
Содержание FVP110
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Страница 97: ...81 Dimensions Standard Specifications Dimensions Figure 46 Single Acting Actuator Dimensions ...
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Страница 99: ...83 Dimensions Standard Specifications Figure 48 Terminal Configuration ...
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Страница 114: ...FVP 110 Fieldbus Valve Positioner Manual 98 GE Energy Table 17 View Object for Transducer Block ...
Страница 115: ...99 View Object Configuration Table 11 View Object for Transducer Block continued ...
Страница 117: ...101 View Object Configuration Table 18 View Object for AO Function Block ...
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Страница 119: ...103 View Object Configuration Table 20 View Object for OS Function Block ...
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Страница 121: ...105 View Object Configuration Table 22 View Object for Resource Block ...
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Страница 238: ...FVP 110 Fieldbus Valve Positioner Manual 222 GE Energy Table 72 LM Parameter Part List ...
Страница 239: ...223 LM Parameter List Link Master Functions ...
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Страница 262: ...FVP 110 Fieldbus Valve Positioner Manual 246 GE Energy Table 85 Download Error Codes ...
Страница 265: ...249 Comments on System Network Software Download Table 88 DOMAIN_DESCRIPTOR ...
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Страница 268: ...FVP 110 Fieldbus Valve Positioner Manual 252 GE Energy Figure 84 Checking Position at Which Clamp Should Be Fixed ...
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Страница 289: ...273 H Customer Maintenance Parts List ...
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