Table of Contents
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Parameters of DB1
Introduction
Modifying DB1
Default DB1
COM DB1
Size of DB1
Interaction
Summary of this
Section
Communications Processor CP 541
EWA 4NEB 812 6188-02
You assign parameters to the CP 541 with DB1 in the CP 541. You thus de-
termine the operational behavior of the CP 541.
To be able to modify DB1 in CP 541, you must switch the CP 541 to STOP
and connect a PG to the PG/PLC input. It is assumed that you already know
how to modify DB1 with a PG.
The CP 541 operating system contains a default DB1 with which the CP 541
can be started.
You cannot use software package COM DB1.
DB1 in CP 541 can contain up to one Kbyte of data. Ensure that DB1 does
not contain too much unnecessary data such as blanks and remarks.
If you have modified DB1 repeatedly, you must compress the main memory
in the CP 541 from a PG. After a change in DB1, the old DB1 is not over-
written but merely declared invalid and the modified DB1 is stored in a free
memory area. Invalid data blocks are cleared by compression.
For some parameters, you need information from all the stations in use in
SINEC L2. You will be informed again with the relevant parameters.
Section
C.1
Structure of DB1
C.2
Syntax of DB1
C.3
General SINEC L2 Parameters - Block Identifier SL2
C.4
CP 541-Specific Parameters - Block ID COM
C.5
DP Parameters - Block ID DPS
C.6
Default DB1
C.7
Calculating the Token Rotation Time
C.8
Example of Calculation of the Token Rotation Time
Contents
C
Page
C-2
C-3
C-4
C-8
C-10
C-12
C-14
C-16
C-1
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