Keypad Connection - Kodicom ND-1016 User Manual

1.8 Keypad Connection

1.8 Keypad Connection
The Keypad(KD-KB3) can be used to control up to 255 DVR and PTZ units. Connect
the DVR's RS485 (+.-) part to the Keypad's RS485 port.
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[Note]
• Turn the power off both units while connecting the Keypad.
• Pay attention to the polarity of the RS485 connections.
• When using a keypad device, please ensure that communication settings for both the
DVR and the keypad device are the same. Communication settings mismatch can
prevent the keypad device and the DVR from making normal communication. (Set
communication protocols for both the keypad and the DVR as Half Duplex.)
• It's not possible to connect a PTZ device and keypad device to the RS485 port and
use the two devices at the same time. In order to use a PTZ device with a keypad or
another type of external device, you will need to install a separate COM port expansion
card.
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