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Bosch Security Systems | 18 August 2005
LTC 8016/90 | Instruction Manual | Installation
4.4.1 Group ID Settings When Using Allegiant
RS-232 or RS-485 Protocol
When using the Allegiant data interface protocol, the
Group ID must be set to correspond to a block of 16
physical camera numbers between 1-16 and 481-496.
Since each block consists of 16 numbers, the Group
ID number for these cameras ranges from 1 to 31.
Select a Group ID number that does not duplicate
another Group ID number.
A special case exists when multiple units are cascaded
using the Interface Unit’s RS-485 data connection
(explained later). The left-most Group ID switch on
the last unit must be set to 9, to terminate the data
link.
For example, if a total of 32 Bilinx-enabled cameras
will be connected using the range of Allegiant inputs
17-32 and 49-64, one of the Interface Units must be
set to Group ID 002, and the other to 004. If the
Interface Unit for cameras 49-64 is the last unit
connected at the end of the RS-485 data link, its
actual Group ID should be set to 904.
If only one Interface Unit will be connected to
support Bilinx cameras on inputs 1 to 16, no change
is required from the Interface Unit’s default setting
of 901.
Set the Group ID switches using the supplied
screwdriver, as follows:
1
The last unit must be set to terminate the RS-485 data line, by
setting the left-most Group ID switch to 9.
If the Allegiant’s camera number assignments will be
changed (using the Allegiant Master Control Software
package) to use logical camera numbers other than
the default physical input numbers, Interface Units
with Group ID ranging from 1 to 31 are automatically
notified of the new settings, by the Allegiant system.
This allows the system to support random camera
numbers.
NOTE: If the Allegiant’s logical camera number
assignments are changed as described above, then
downloaded into the Allegiant CPU, the update
process may take up to 30 seconds. Camera control
functions will not be available until this update has
completed.
Group ID
Switches
1
Camera
Number
Range
Group ID
Switches
1
Camera
Number
Range
001 1 to 16 017 257 to 272
002 17 to 32 018 273 to 288
003 33 to 48 019 289 to 304
004 49 to 64 020 305 to 320
005 65 to 80 021 321 to 336
006 81 to 96 022 337 to 352
007 97 to 112 023 353 to 368
008 113 to 128 024 369 to 384
009 129 to 144 025 385 to 400
010 145 to 160 026 401 to 416
011 161 to 176 027 417 to 432
012 177 to 192 028 433 to 448
013 193 to 208 029 449 to 464
014 209 to 224 030 465 to 480
015 225 to 240 031 481 to 496
016 241 to 256
