18. Appendix I
18.2. Description
R400 Experion PKS Series A Fieldbus Interface Module User's Guide 549
July 2010 Honeywell
Tab
Parameter Default Value Description
Post Trans Gap
Extension
(LMLSTREC.PTGEXT
N)
0
Specifies an extension to the
minimum period during which a
subsequent transmission shall
not commence after
transmission of a PhPDU. For
the same minimum period after
reception of a PhPDU, the
receiving Physical Layer entity
shall ignore all received
signaling. A Medium Dependent
Sublayer (MDS) entity shall set
a minimum post transmission
period of four nominal bit times.
The period may be extended,
but not reduced. It is an
Unsigned8 variable with
allowable values between 0 and
7.
Max Inter Channel
Signal Skew
(LMLSTREC.MXICSS
W)
0
Defines the maximum accepted
differential delay between any
two active channels, as
measured from the first PhPDU
of a start delimiter, if the device
is to receive concurrently on
more than one channel. The
delay shall not exceed five
nominal bit times. This period
may be extended, but not
reduced. The value of the post
transmission gap shall be
greater than the value of inter
channel skew. It is an
Unsigned8 variable with
allowable values between 0 and
7.
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