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AF-232
The RD379 also supports AFSK data at RS-232 levels, known as AF-232. For this
format, use connector PL7, and LK6 must be in position "2W". LK1 is used to select
"Echo on" (B) or "Echo off" (A) for data. In Position "A" the site receiver's own data is
transmitted in AF-232 format. This is also sent in position "B", but in addition, the
receive data is also transmitted.
Note: The RD315 communications modules used to control the RD379 have a similar
link, and only one end can be used in the "echo on" mode. AF-232
communications contain full protocol for multi drop applications and is suitable for
optical fiber TX/RX. A multi drop ring loop fiber data system can be used to
communicate with up to 16 PTZ sites. Another option is to run optical fiber to the
first PTZ site and then normal 2-wire connection continues onto other sites.
The use of the communications DIP switch SW2 is summarized in the table below.
Following is more details of the functions of each switch.
SW2
1
2
3
4
5
6
7
8
*SW2/4 MUST be set to the ON position.
SW2-1 Mode Select (master or slave)
The RD379 should have this switch set to off to select slave mode.
SW2-2 Destination Type (master or slave)
The RD379 should always have this switch set to off to select a destination of master.
SW2-3 Polling mode
The polling mode on all RD379 site receivers and RD315 control card on the
communications network should be set to the same (ON or OFF). Usually polling is
switched ON and in this mode the RD315 control module will sequentially communicate
with all known slave locations (PTZ site receivers) in the network on a continuous basis.
If the RD379 does not respond to this polling, then this change will be reported to the
MAXPRO-Net system.
Polling is usually only switched OFF when the communications link is limited to simplex
only and no return data is expected.
Rev. C
DIP Switch Settings
DESCRIPTION
ON
Mode Select
Master
Destination
Slave
Poll Mode
Enabled
Not Used
Site ID No
Ref table page
Site ID No
Ref table page
Site ID No
Ref table page
Site ID No
Ref table page
OFF
Slave
Master
Disabled
7.12-3
FACTORY
OFF
OFF
ON
*ON
HMXMU001018
10/06
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