American Dynamics ADCC0300 Specifications download pdf (Page 22)

ADCC0200 and ADCC0300

Multiple Keyboards on an RS485 Network

A maximum of 16 devices may be connected when working in RS485 mode. A maximum

of eight keyboards can be assigned to the system.

For correct connection of multiple keyboards to an MegaPower LT, please see the

MegaPower LT Installation and Operation Handbook.

Terminating/Biasing the RS485 Network

The keyboard has built in RS485 network termination and/or biasing. For most small to

medium sized installations, it should not be necessary to change the switches from their

default settings. Only for large installations should your network require biasing and/or

terminating. The switches are shown below for your reference. The default setting for

switches 1, 2 and 3 is OFF (UP). Switch 4 is not used.

*Default setting

Network setting Switch 1 Switch 2

Biased ON ON

Not Biased* OFF* OFF*

Network setting Switch 3

Terminated ON

Not Terminated* OFF*

*Default setting

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American Dynamics ADCC0300 Specifications Page 22