Reference Guide

ZCOM Tables and Data Structures
ZCOM Header Structure
Chapter 352
HLCLND - Local node number
The node number of the local ZCOM subsystem. If the Node-Definition
section in the TTGEN configuration file is omitted, TTGEN defaults this
field to one (1). Otherwise, it is initialized to the value of the Local-Node
parameter. It is set up by TTGEN as the first node table entry that has
zero ZLU number. There may be other numbers that also refer to the
local node but HLCLND is the only one that is used to identify the local
node on outbound messages.
HLTQTB - Queue label table
Each entry in the queue label table indicates the ownership of a data
queue in a logical terminal table. Each entry has a structure of 16 bytes
(zqlb_type) as shown in Table 3-2.
The table is initialized by TTGEN from the Logical-Data statements in
the TTGEN configuration file. There is one entry in the Queue label table
for each Logical-Data statement. Additional entries can be added to this
table by calling the zltqueue routine (up to a maximum of 20 queue
labels).
Table 3-2 Queue Label Table
Field Name Field Description Field Type
Size
(bytes)
QLBGRP Appl. grp. number (0 = globally assigned) uns.short 2
QLBNAM Queue label name char 8
QLBQNB Allocated queue number uns.short 2
QLBRSV <reserved>, unused char 4