AMX Control System Accessories Anterus - Manual (Page 17)

Installation
13 Anterus RFID Solution
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.
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).
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.
For example, the DIP switch shown in FIG. 13 defines Device 96 (switches 6 and 7 = ON).
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).
FIG. 13 Device DIP Switch
Device DIP Switch Settings
Position 1 2 3 4 5 6 7 8
Value 1 2 4 8 16 32 64 128
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.