Texas Instruments 990 User Manual page 42

Planning the Network
PROGRAM IN
P RIMARY STATION
EXECUTES
W RI TE/SEND CALL
(CALL BLOCK)
>40
0
2
•
•
•
DID
1 0 0 1
SID 5 0 0 3
. .
...
(ACCESS)
COMMUNICATIONS
PACKAGE
SOFTWARE
NETWORK
INFORMATION
TABLE
•
•
•
...
:>
1E
I
> CO
~
LINE
•
LUN 0
•
•
1
0 0
0
1 0 0 1
1 0 0
2
•
•
I
•
I
LOCAL LINE
CABLE
J
.. ~'---------------------~
..
SAMPLE MESSAGE TO
SECONDARY ON LOCAL LINE
--------t:N
>1E
PACKET HEADER
•
•
•
o o
(TXS)
TID
>27
>80
>81
>AO
•
•
•
I
LLM
I
SA;:
10 =-
DIS 10
2000.
2001
2002
2003
•
•
•
>1C
2000.
5
o o
3
~~--------------~
I
USER DATA
NOTES:
•
•
•
• .::; TASK AND NETWORK 10 FOR
REMOTE SCI
10 ., NETWORK 10 ASSIGNED TO
STATION
SA ;; STATION ADDRESS IS SWITCH SETTING
ON LLM
TID "" TASK 10
DIS 10 :::: NETWORK 10 (DID OR SID) ASSIGNED
TO TASKS
(TX5)
TID
>27
>80
>90
>A1
•
•
•
I I
Sk= >1 E
LLM
10·;:
1000.
DIS ID
1000.
1001
1002
1003
•
•
•
2277884
Figure 2-1 Network Addressing on the Same Multipoint Line
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