AMX Anterus Assigning the ANT-RDR Device Address, Gauge/resistance factors Solid Copper Wiring

Installation

To calculate the AXlink wiring distance formula for data and power:

1.<Total current consumption of all device's on AXlink cable> *<wire resistance per foot> * 2 = <voltage drop per foot>. See tables below for the Wire Resistance/Foot values.

2.<Power supply voltage> - 12 VDC = <surplus voltage dissipation for cable run>.

3.<Surplus voltage dissipation for cable run> / < voltage drop per foot > = Maximum distance in feet.

The following table lists the resistance factors used in the formula.

Gauge/resistance factors - Solid Copper Wiring

Wire gauge	Wire Resistance/foot
18 AWG	.00639
20 AWG	.0101
22 AWG	.0162
24 AWG	.0257

For further details on AxLink Wiring, refer to the AXlink Wiring Considerations Instruction Manual (available online at www.amx.com).

Assigning the ANT-RDR Device Address

The ANT-RDR sets its AXLink address via the 8-position DEVICE DIP switch located on the rear panel (FIG. 13).

FIG. 13 Device DIP Switch

The AXLink address distinguishes a device on the AXLink bus from other devices. Care should be taken by the system integrator not to assign duplicate AXLink addresses to multiple devices.

AXLink addresses must be in the range of 1 to 255 (address 0 belongs to the Master).

As indicated on the device, flip each switch down for the ON position.

Device DIP Switch Settings

Position	1	2	3	4	5	6	7	8
Value	1	2	4	8	16	32	64	128

For example, the DIP switch shown in FIG. 13 defines Device 96 (switches 6 and 7 = ON).

The device number takes effect only upon power-up. If you later change the device number, remove and reconnect the AXlink connector to enter the new device number into memory.

Anterus RFID Solution 13