217
B
Link Master Functions
Link Active Scheduler
A link active scheduler (LAS) is a deterministic, centralized bus scheduler that can control
communications on an H1 fieldbus segment. There is only one LAS on an H1 fieldbus
segment.
FVP supports the following LAS functions:
❑
PN transmission: Identifies a fieldbus device newly connected to the same fieldbus
segment. PN is short for Probe Node.
❑
PT transmission: Passes a token governing the right to transmit, to a fieldbus device
on the same segment. PT is short for Pass Token.
❑
CD transmission: Carry out a scheduled transmission to a fieldbus device on the
same segment. CD is short for Compel Data.
❑
Time synchronization: Periodically transmits the time data to all fieldbus devices on
the segment and returns the time data in response to a request from a device.
❑
Live list equalization: Sends the live list data to link masters on the same segment.
❑
LAS transfer: Transfers the right to be the LAS on the segment to another link
master.
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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