AutoDome Pipe Mount
Cable and Wire Standards | en
39
Bosch Security Systems, Inc.
Installation Guide
F.01U.251.410 | 1.0 | 2011.08
3.4.3
Controlling the AutoDome via the RS485 Protocol
2-wire (shielded), half-duplex, differential, multi-drop (32
nodes), 4000 ft cable limit)
RS485 is capable of controlling a true multi-drop network and is
specified for up to 32 drivers and 32 receivers on a single 2-
wire bus. The AutoDome uses the 2-wire mode, although RS485
can be connected in a 2- or 4-wire mode. This control option is
applicable to the VG5 600 Series only.
NOTICE!
The wire shield must be tied to signal at both ends, if 2-wire
twisted pair is used. After connecting the wires for RS485
operation, make sure the slide switch on the main board to the
camera head is positioned toward the LEDs (default).
CAUTION!
Bosch recommends that multiple RS485 connections be
arranged as a connected series of point-to-point (multi-
dropped) nodes, as a line or as a bus. It is
not
recommended to
arrange RS485 connections as a star, ring, or as a multiple-
connected network. Star and ring topologies may cause signal
reflections or excessively low or high termination impedance.
Wire Type
2-wire shielded twisted pair
Distance
1219 m (4000 ft)
Maximum Baud Rate
57.6 kb
Gage
0.511 mm (24 AWG)
Wire Impedance
120 W
Slide Switch
Toward LEDs (factory default)
Содержание VG4-A-9543
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