6100 ADCCP Programming Manual

6100 ADCCP Concepts and Context
Introduction to 6100 ADCCP
1–10 069225 Tandem Computers Incorporated
Figure 1-6. Station Addressing
Secondary
Substation
004
Primary
Substation
Secondary
Substation
Combined Station Combined Station
Address "A"
Secondary
Station
Secondary
Station
Secondary
Station
Primary Station
Address
"A"
Address
"B"
Address
"C"
The primary uses a
different address to
communicate with each
secondary station.
Each secondary station
uses only one address.
Each combined
station has two
addresses. The local
primary substation
has the same address
as the remote
secondary substation,
and vice versa.
Address "B" Primary
Substation
In standard line control modes (NRM, ARM, or ABM), the address field is 1 byte long.
In extended modes (NRME, ARME, or ABME), the address field can be up to 4 bytes
long. You define the length of the field at system generation, through the
Communications Management Interface (CMI), or in the configuration block through a
(1) SET CONFIGURATION request from the application. You assign addresses to
stations as follows:
For a point-to-point or multipoint link, you assign addresses with an application
request (DEFINELIST).
For an ABM link, you assign the primary substation address with an application
request (DEFINELIST) and the secondary substation address at system generation,
through CMI, or in the configuration block with an application request (SET
CONFIGURATION).