Honeywell Series A User Manual page 544

18. Appendix I
18.2. Description
Tab
Target Token Rotation
Time
(LMINFREC.TTRT)
Link Maint Token Hold
Time
(LMINFREC.LTHT)
544 Experion PKS Series A Fieldbus Interface Module User's Guide
Parameter Default Value
60000
334
Honeywell
Description
Specifies the desired upper
bound on the time required for
one cycle of the "circulating the
token" to all the DLEs on the
local link that the LAS DLE
uses. One cycle of "circulating
the token" is measured as the
interval between successive
occurrences of the LAS DLE
sending a PT DLPDU, with a
token-use subfield specifying
Restart to the lowest numbered
node address represented in the
local link live list. Its range is 1
to 60000. The unit is one
millisecond.
Specifies the initial amount of local
link capacity that the LAS DLE
should allocate to LAS related link
maintenance activities in one cycle
of "circulating the token". Its range
is 292 to 65000 and its default
value is 292 + Data Link Protocol
Data Units (DLPDU) Physical
Layer Overhead (PhLO) value +
Immediate Response Recovery
Delay (IRRD) value + Slot Time
(ST) value, which permits the
probing of one node address
and the sending of one time
available DT DLPDU. The unit is
the transmission duration of one
octet.
July 2010
R400