Yokogawa Wireless Temperature Transmitter YTA510 - Manual (Page 90)

<Appendix 5. Link Master Functions>
A5-3
IM 01C50T02-01E
(3) In the LAS settings of the YTA, set the values
of V(FUN) and V(NUN) so that they include the
node addresses of all nodes within the same
segment. (See also Figure 3.)
ConfiguredLinkSettingsRecord (YTA Index 369 (SM))
Sub-
ndex
Element
Default
Value Description
4 FirstUnpolledNodeId 0x25 V (FUN)
7 NumConsecUnpolledNodeId 0xBA V (NUN)
A5.4 LM Functions
No. Function Description
1 LM initialization When a fieldbus segment
starts, the LM with the smallest
[V(ST) × V(TN)] value within
the segment becomes the
LAS. At all times, each LM
is checking whether or not a
carrier is on the segment.
2 Startup of
other nodes
(PN and Node
Activation SPDU
transmissions)
Transmits a PN (Probe Node)
message, and Node Activation
SPDU message to devices
which return a new PR (Probe
Response) message.
3 PT transmission
(including final bit
monitoring)
Passes a PT (Pass Token)
message to devices included
in the live list sequentially,
and monitors the RT (Return
Token) and final bit returned in
reply to the PT.
4 CD transmission Transmits a CD (Compel Data)
message at the scheduled
times.
5 Time
synchronization
Supports periodic TD (Time
Distribution) transmissions and
transmissions of a reply to a
CT (Compel Time).
6 Domain
download server
Sets the schedule data.
The schedule data can be
equalized only when the
Domain Download command
is carried out from outside the
LM in question. (The version
of the schedule is usually
monitored, but no action takes
place, even when it changes.)
7 Live list
equalization
Transmits SPDU messages to
LMs to equalize live lists.
8 LAS transfer Transfers the right of being the
LAS to another LM.
9 Reading/writing
of NMIB for LM
See Section A5.5.
10 Round Trip Delay
Reply (RR) Reply
to DLPDU
Not yet supported in the
current version.
11 Long address Not yet supported in the
current version.