Reference Guide

ZCOM Tables and Data Structures
Physical Terminal Tables
Chapter 370
PTZLU - Owning terminal ZLU number
PTZCS - Owning terminal ZLU checksum
The terminal ZLU number points back to the ZLU table entry for the
owner of the terminal. The ZLU contains the checksum for the ZLU as
well as its number. It is used by the driver to derive the source ZLU for
all messages received for this physical terminal. This parameter is
initially setup by TTGEN in the memory image file. These fields are
maintained by the ZCOM subsystem when ZLU and terminal linkage are
modified.
PTMUX - Mux number of terminal
The Mux interface number of the terminal. This is set initially through
the TTGEN configuration file and is subsequently maintainable.
PTPORT - Terminal port number
The port number of the terminal on the Mux interface. This is set
initially through the TTGEN configuration file and is subsequently
maintainable.
PTTERM - Terminal number within port
The terminal number on the Mux interface card within the port. This is
set initially through the TTGEN configuration file and is subsequently
maintainable. This field has been replaced by the ptmx_term field. It
remains valid for 2/8-channel cards for backwards compatibility reasons.
PTMX_TERM - Terminal number within port or card
PTCNFG Special configuration uns.char [8] 8
PTCWCT Control write counter uns.int 4
PTTXCT Transmit message counter uns.int 4
PTRXCT Receive message counter uns.int 4
PTERCT Error counter uns.int 4
Table 3-12 Physical Terminal Tables (User Maintainable Area
PTUSER) (Continued)
Field Name Field Description Field Type Size (Bytes)