Bach-Simpson, 1255 Brydges St., London, Ont., CANADA
N5W 2C2
1. Introduction
Attendees:
Dave Currie, Rob McHugh, Dave
Gregson, Alain Poirier
Bach-Simpson provided facilities and sustenance for the meeting. Rob
McHugh introduced himself and introductions continued around the table.
Since Transit Agencies would be expected to cover the
expenses for their employees attending meetings; only the chair showed up at
his own expense. The problem with this strategy will be reported to the RTVISC
Chair.
2. Review of the status of the
standard
Scope and Purpose were reviewed to highlight that they
must be retained in their present form but the standard’s emphasis is up to the
group’s discretion. The WG felt that the document should still be issued as a
standard and not a recommended practice. A draft will be ready for the fall
full committee review and to allow time for comment resolution an extension to
the PAR will need to be applied for before the end of 2002. The other related
published standards need to be considered along with IEC-TC9 and APM work.
Lonworks based MDS seems to be out of step with TCN
based MDSs. WG9 will formalize all data elements identified by WG3. It was
agreed that a minimum set of data elements would be identified to bound a
simplistic system.
The latest draft can be accessed from TSD.org.
3. Review of the
section-by-section comments
The table on page 2 was completed to verify what is
covered in the standard; this table will be removed before posting to TSD.
The structure of the MDS as presented in the tables at
the beginning of section 4.0 in the draft standard is to be presented as is,
for comment.
Section 6 tables with
cross reference to other standards are for discussion purposes only and the
reference columns will be removed before ballot.
Data logging and retrieval
issues such as media, formats, post-processing are important issues were
addressed in the standard.
The index has been cleaned-up.
Sections 9 and 10.3 can
reference IEC and RSAC specs for galvanic isolation. Include Test Equipment
Interface protocol in Section 9.
4.0 Coordination with other
Working Groups
WG2 1474.2 is addressing display/display formats.
A reminder that data
collected by the M&DS can be stand-alone but integration into a WAN for
post processing will provide maximum benefit.
Levels of reporting
(section 5.1) can be to UIC 557 paragraph 1.4 with some revisions by AHJs to
orient reporting classes more to rail transit.
WG3 has signal
definition charts (section 6) which will be passed on to WG9 to formalize.
5.0 Next Meeting
The group expressed interest
in holding the next meeting in 2 months possibly at Metro North. As Rob will
have difficulty attending he will investigate APTAs teleconference
capabilities. Rob will issue notice and map.