22
……
Figure 5-3
One 485 bus can connect with thirty-two RS485->232 converters
，
one RS485->232 converter
can connect with twelve DVRs.
5.1.3 Multi-keyboard link via RS485
You can use the following figure if you are connecting multiple keyboards via RS485 port. See
Figure 5-4.
……
Figure 5-4
Multi-converter connection
：
The last converter on RS 485 port must be short circuited. (E.g.: open converter). See Figure 5-5.
See the image below, you need to change
[1-2]
short circuit to
[2-3]
short circuit.
Note:
Menu serial setup should conform to the device you connected; otherwise keyboard can not
control the device!
Figure 5-5
5.2
5.2
5.2
5.2
Networ
Networ
Networ
Network
k
k
k C
C
C
Connection (For network keyboard only)
onnection (For network keyboard only)
onnection (For network keyboard only)
onnection (For network keyboard only)
Connect RJ45 port to the network to realize network control and upgrade.
Short
circuit
1 2 3
A
B
Other 485 devices
485->232 converter
485->232 converter
A
B
485->232 converter
……
Summary of Contents for DLA6332
Page 32: ...32 Figure 7 3...
