User's Manual

Company Confidential 17 Raveon Technologies
To solve this problem, some of the M7-UC modems are configured as
repeaters. The still are able to send and receive data, but they also will
repeat data out to the modems that are out of range of M7-UC A.
H is configured to repeat all messages to/from E, D, and G. B is configured
to repeat all messages to/from C, and D is configured to repeat all messages
to/from G.
The following table illustrates one possible way the M7-UCs could be
programmed to accomplish this type of system.
M7-UC
Unit ID
(ATMY)
Destination
(ATDT)
Network
Mask
(ATMK)
Repeat
Source
Repeat
Source
Mask
Repeat
Destination
Repeat
Destination
Mask
Addresses programmed into unit
Repeater table programmed into unit
A
1000
1000
FF00
-
-
-
-
B
1010
1000
FF00
1020
FFFF
1000
FFFF
1000
FFFF
1000
FFFF
C
1020
1000
FF00
-
-
-
-
D
1030
1000
FF00
1031
FFFF
1000
FFFF
1000
FFFF
1000
FFFF
E
1032
1000
FF00
-
-
-
-
F
1021
1000
FF00
-
-
-
-
G
1031
1000
FF00
-
-
-
-
H
1022
1000
FF00
1030
FFFF
1000
FFFF
1000
FFF0
1000
FFFF
Store-and-forward repeating is enabled with the ATXR command. ATXR 1
enables repeating. ATXR 0 disables it.
The Repeat Source, Repeat Source Mask, and the Repeat Destination are
programmed into a Repeater Table in the M7-UC. The ATX command is
used to program the Repeater Table. The Repeater Table may have up to 4
entries.
For example, M7-UC B in the above example will have two entries in its
Repeater Table. The command to set the two entries is:
ATX1 1020 FFFF 1000 FFFF
ARX2 1000 FFFF 1000 FFFF
The first command above sets the Repeat Source to 1020 and the Repeat
Destination to 1000, both with a Mask of FFFF. The FFFF mask means all
digits of the source and destination are used to determine if the transmission
should be repeated. All packets from units with MYID 1020 (C) sent to 1000
will be repeated by this unit. It will not repeat messages from D, E, F, G, or H
because their Unit IDs are not in the Repeat Source repeater table.