AMX AXB-DMX512 User Manual
AXB-DMX512
DMX512 Interface
instruction manual
AXlink Bus Controllers
AMX Limited Warranty and Disclaimer
AMX Corporation warrants its products to be free of defects in material and workmanship under normal use for
three (3) years from the date of purchase from AMX Corporation, with the following exceptions:
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• Software is warranted for a period of ninety (90) days.
• Batteries and incandescent lamps are not covered under the warranty.
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Table of Contents
Table of Contents
Product Information .................................................................................................1
Specifications .................................................................................................................... 1
Configuration and Installation .................................................................................3
Setting the Device DIP Switch........................................................................................... 3
Terminating the Device ..................................................................................................... 3
Wiring Devices to the AXB-DMX512 ................................................................................. 4
Preparing/connecting captive wires ......................................................................................... 4
Wiring guidelines...................................................................................................................... 4
Using AXlink communication.................................................................................................... 5
Using IN and OUT DMX512 data communication.................................................................... 5
Mounting the AXB-DMX512 in a Rack .............................................................................. 5
Replacing the Lithium Battery ........................................................................................... 6
Programming ............................................................................................................9
Buffers ............................................................................................................................... 9
Direct Control Buffer Send_Commands .......................................................................... 10
Patch Buffer Send_Commands....................................................................................... 11
Group Buffer Commands ................................................................................................ 13
Axcess Level Send_Commands ..................................................................................... 20
Miscellaneous Send_Commands.................................................................................... 23
Channel Commands........................................................................................................ 25
Channel Trigger Send_Commands................................................................................. 26
Troubleshooting .....................................................................................................27
AXB-DMX512 DMX512 Interface
i
Table of Contents
ii
AXB-DMX512 DMX512 Interface
Product Information
The AXB-DMX512 DMX512 Interface creates a bi-directional DMX512 AXlink connection,
transmitting and receiving up to 512 DMX channels for lighting dimmers, spotlights, and other
DMX control applications.
Onboard processing and memory can create and store channel groups, faders, patches, and up to 72
presets. A DMX lighting board can operate in tandem with the AXB-DMX512, generate levels for
storing presets, or pass through the AXB-DMX512 for direct control of channels.
Specifications
AXB-DMX512 Specifications
Power consumption 160 mA @ 12 VDC
Power supply 12 VDC (part number SA002)
Front panel components:
LED Indicators • AXlink LED (green and blinks to indicate AXlink communication activity and
power:
Full-Off indicates no power is being received or the controller is not
functioning properly.
One blink per second indicates power is active and AXlink communication is
functioning.
Full-On indicates there is no AXlink control or activity, but power is On.
• RX LED (red) indicates the AXB-DMX512 is receiving DMX512 data.
Corresponds to the IN and OUT ports on the rear panel.
• TX LED (red) indicates the AXB-DMX512 is transmitting DMX512 data.
Corresponds to the IN and OUT ports on the rear panel.
DEVICE DIP switches 8-position DIP switch sets the AXlink address for the DMX512.
Rear panel components:
DMXIN port 5-wire, captive-wire connector for receiving data.
DMXOUT port 5-wire, captive-wire connector for transmitting data.
AXlink 4-wire, captive-wire connector for data and power.
Dimensions (HWD) 1.5" x 5.5" x 5.5" (38 mm x 140 mm x 140 mm)
Enclosure Metal with black matte finish
Mounting Rack mounting with the optional AC-RK Accessory Rack Kit
Weight 1.1 lb (0.5 kg)
Product Information
XB-DMX512 DMX512 Interface
1
Product Information
2
AXB-DMX512 DMX512 Interface
Configuration and Installation
Setting the Device DIP Switch
The 8-position DEVICE DIP switch on the front panel (FIG. 1) sets the AXlink identification
number for the AXB-DMX512. Make sure the device number matches the number assigned in the
Axcess software program.
Configuration and Installation
AXlink
FIG. 1 AXB-DMX512 (front view)
The following table describes the values on the
DEVICE
RXTX
ON
DEVICE DIP switch.
Device DIP Switch Settings
Position 12345678
Value 1 2 4 8 16 32 64 128
Terminating the Device
When using the DMX input and if this device is the last device in a chain of DMX512 devices, you
must terminate the line. To terminate the device, position jumpers on jumper pin trios JP4 and JP5
(FIG. 2):
JP2
JP5
Lithium Batteries
JP3
JP4
FIG. 2 Location of termination jumpers pins (JP1-JP5) and lithium batteries
1. Remove the jumper that is on pins 1 and 2 of jumper trios JP4 and JP5. (Pins 1 and 2 are
marked HIZ - see FIG. 3).
XB-DMX512 DMX512 Interface
JP1
COR
front
3
Configuration and Installation
2. Place the jumper on pins 2 and 3 of jumper trios JP4 and JP5. (Pins 2 and 3 are marked TERM
-see FIG. 3). This terminates the incoming DMX input with a 120 ohm resistor.
FIG. 3 Termination jumper pin settings for JP4 and JP5
Wiring Devices to the AXB-DMX512
The AXB-DMX512 has three captive-wire connectors on the rear panel (FIG. 4) for DMX512
transmit and receive, and AXlink.
TERM
HIZ
121
GND
DATA
2
DATA
DATA
DATA
NC
IN OUT AXlink
2
2
1
1
AXP
AXM
GND
DATA
DATA
DATA
DATA
NC
GND
PWR
FIG. 4 AXB-DMX512 (rear view)
Preparing/connecting captive wires
1. Strip 0.25 inch of wire insulation off all wires.
2. Insert each wire into the appropriate opening on the connector according to the wiring
diagrams and connector types described in this section. Do not tighten the screws excessively;
doing so may strip the threads and damage the connector.
Wiring guidelines
The interface requires a 12 VDC power to operate properly. The interface uses a PSN2.8 power
supply. The Central Controller supplies power via the AXlink cable or external 12 VDC power
supply. The maximum wiring distance between the Central Controller and interface is determined
by power consumption, supplied voltage, and the wire gauge used for the cable. The table below
lists wire sizes and maximum lengths allowable between the AXB-DMX512 and Central
Controller. The maximum wiring lengths for using AXlink power are based on a minimum of 13.5
volts available at the Central Controller’s power supply.
Wiring Guidelines at 160 mA
Wire Size Maximum Wiring Length
18 AWG 733.57 feet (223.59 m)
20 AWG 464.11 feet (141.46 m)
22 AWG 289.35 feet (88.19 m)
24 AWG 182.39 feet (55.59 m)
4
AXB-DMX512 DMX512 Interface
Configuration and Installation
Using AXlink communication
Connect the AXlink wiring to the connector on the AXB-DMX512, as shown in FIG. 5.
AXlink connector
on AXB-DMX512
FIG. 5 AXlink wiring
PWR
AXP
AXM
GND
PWR
AXP
AXM
GND
Device
Using IN and OUT DMX512 data communication
Some DMX devices only use DATA+ and DATA-. Connect these to DATA1+ and
DATA1-, leaving DATA2+ and DATA- unconnected.
The DATA2 In and Out ports are not Currently supported.
1. For transmit wiring, connect the DMX512 wiring to the OUT connector, as shown in FIG. 6.
GND
DATA1-
DATA1+
DATA2-
DATA2+
Device
connector on AXB-DMX512
DMX 512 OUT
FIG. 6 DMX512 transmit wiring
GND
DATA1-
DATA1+
DATA2-
DATA2+
NC
2. For receive wiring, connect the DMX512 wiring to the IN connector, as shown in FIG. 7.
GND
DATA1-
DATA1+
DATA2-
DATA2+
Device
connector on AXB-DMX512
DMX 512 IN
FIG. 7 DMX512 receive wiring
GND
DATA 1-
DATA1+
DATA 2-
DATA2+
NC
Mounting the AXB-DMX512 in a Rack
To mount the AXB-DMX512 in an equipment rack, you will need an AC-RK rack mounting kit.
1. Remove the two screws on the front panel of the AXB-DMX512.
2. Remove the front panel and the space bracket behind the panel.
3. Remove the rubber feet on the bottom of the unit, if necessary. Insert a scissors blade or other
sharp object into the side of one of the rubber feet and pull it off. Do the same to remove the
other three rubber feet.
4. Place the unit in the appropriate opening in the AC-RK.
5. Place the front panel of the AXB-DMX512 on the front of the rack over the unit and secure the
screws.
XB-DMX512 DMX512 Interface
5
Configuration and Installation
Replacing the Lithium Battery
A lithium battery (FIG. 8) with a life of approximately 5 years, protects stored presets if a power
loss occurs. The battery is not used when DC power is supplied to the AXB-DMX512. Write down
the replacement date on a sticker or label by adding 5 years to the date of installation, and then
attach it to the bottom of the AXB-DMX512.
FIG. 8 Lithium battery and socket
All control commands in AXB-DMX512 memory are lost when the lithium battery is
replaced
Contact your AMX dealer before you replace the lithium battery and verify that they have a current
copy of the Axcess program for your AXB-DMX512. This will avoid any inadvertent loss of data
or a service outage.
Battery (CR2032 type - 20mm coin cell)
socket
You will need a flat-blade tool (non-conducting) that can be slipped under the lithium battery to pry
it up and out of the socket.
Static electricity can damage electronic circuitry. Before removing the lithium battery
from the enclosure, discharge any accumulated static electricity from your body by
touching a grounded metal object.
1. Discharge the static electricity from your body.
2. Unplug all cables from the AXB-DMX512.
3. Remove the AC-RK and AXB-DMX512 from the mounting rack. Otherwise, go to step 4.
4. Remove the five pan-head screws on the top of the AXB-DMX512 enclosure.
5. Pull the two enclosure halves apart and set the bottom portion of the enclosure on a flat surface.
6. Locate the battery on the circuit card.
7. Carefully pry the battery out of its socket and insert the new battery. Write down the next
replacement date on a sticker or label by adding 5 years to the replacement date, and then
attach it to the bottom of the AXB-DMX512.
8. Plug all cables back into the AXB-DMX512.
9. Place the top portion of the enclosure back onto the bottom portion. Then, refasten the five
pan-head screws.
10. Reconnect the cables removed for battery replacement.
There is a danger of explosion if you replace the battery incorrectly. Replace the
battery with the same or equivalent type recommended by the manufacturer. Dispose
of used battery according to the manufacturer's instructions. Never recharge,
disassemble, or heat the battery above 212 °F (100 °C). Never solder directly to the
battery or expose the contents of the battery to water.
6
AXB-DMX512 DMX512 Interface
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