AMX AXP-AI8 ANALOG 8-INPUT BOARD User manual

instruction manual
Custom Panel Interfaces
AXP-AI8
Eight-Channel Analog Input
Interface Board

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Table of Contents
i
AXP-AI8 Eight-Channel Analog Interface Board
Table of Contents
Product Information .................................................................................................1
Specifications .................................................................................................................... 1
Dimensions and Descriptions............................................................................................ 2
Installation .................................................................................................................3
Configuring Switches......................................................................................................... 3
Setting the Device DIP Switch ................................................................................................. 3
Setting the input SIP switch ..................................................................................................... 3
Setting the joystick range POTs............................................................................................... 3
Wiring ....................................................................................................................................... 4
20-Pin Header .......................................................................................................................... 4
AXlink ....................................................................................................................................... 4
Configuring the AXP-AI8 ................................................................................................... 5
Testing ..................................................................................................................................... 5
Programming..................................................................................................................... 6
Levels....................................................................................................................................... 6
Send_Commands .................................................................................................................... 6
Sample Application .................................................................................................................. 6
System Worksheet ...................................................................................................9

ii AXP-AI8 Eight-Channel Analog Interface Board
Table of Contents

Product Information
1
AXP-AI8 Eight-Channel Analog Interface Board
Product Information
The AMX Eight-Channel Analog Input Interface Board (AXP-AI8) is a 10-bit analog-to-digital
interface board used to integrate remote analog sources, such as joysticks or potentiometers (POTs),
with AMX Axcess systems.
Specifications
To create a wiring diagram, use the AXP-AI8 System Worksheet on page 7.
FIG. 1 AXP-AI8
Specifications
20-pin Berg header Connects to either a ribbon cable (up to 30 feet) or mounts directly into a PC.
AXlink connector A 4-wire AXlink data/power bus operation.
AXlink Status LED Green LED shows AXlink data activity. Blink patterns include:
• Off - No power, or the controller is not functioning properly.
• One blink per second - Normal operation. Device numbers match the
programmed device numbers in the Axcess program.
Cables 3 feet (91.4 cm) of ribbon cable with a female 20-pin header.
Device DIP Switch 8-position device DIP Switch to set the AXP-AI8 as an AXlink device.
POTs HI and LO reference POTs maximize the resolution of joystick operation.
Power requirement Inputs accept POTs (5K to 100K) or an external DC voltage (0-5V).
Input voltage range Input voltage range of 0 to +5volts (maximum input voltage is +5volts)
Signal Inputs 8 analog inputs, measured with 10 bit resolution.
SIP Switch 8-position SIP Switch to turn off unused inputs.
AXLink connector
AXLink Status LED
Device DIP Switch Input On/Off
SIP Switch
HI/LO
Reference POTs
Connect this side to PC board.
Connect this side to ribbon cable.
20-pin Header

Product Information
2AXP-AI8 Eight-Channel Analog Interface Board
Dimensions and Descriptions
FIG. 2 shows the dimensions of the AXP-AI8:
FIG. 2 AXP-AI8 dimensions
Item Inch mm Item Description
A 0.20 5.10 G 20-Pin Header - .025 inch (6 mm) square pins, .1 inch (2.4 mm) typical spacing.
B 3.50 88.90 H .125 inch (3.2 mm) mounting holes for #4-40 (3 mm) screws.
C 3.10 78.70
D 2.75 69.90
E 2.35 59.70
F 1.10 27.94
J 0.23 5.80
K 0.438 11.10
L 0.93 23.60
B
C
AXlin
(Component Side)
Top View
D
E
A
A
PWR AXP
K
min
J
P1
GNDAXM
L
20
19
2
1
P2
G
H
FA
k
AXlink

Installation
3
AXP-AI8 Eight-Channel Analog Interface Board
Installation
Configuring Switches
Setting the Device DIP Switch
Use the eight-position device DIP switch to set the AXP-AI8 as an AXlink device. It can be one of
255 devices in an Axcess system. The device number must match the assignment of the device in
the Axcess program. Set the device number with the total of all ON (down) positions. For example,
the DIP switch below defines device number 129 (1+128=129).
AMX standard device numbers are assigned as follows:
 Cards are 1 through 95.
 Boxes are 96 through 127.
 Panels are 128 through 255.
The device number takes effect only on power-up. If you later change the device number, remove
and reconnect the AXlink connector. This enters the new device number into memory.
Setting the input SIP switch
Set the SIP switch positions to ON (down) to disable the corresponding unused inputs. For
example, switch position 1 corresponds to input 1. In the illustration above, switches 1 and 8 are
ON, designating that input 1 and 8 are disabled.
The default setting is all switch positions set to off, enabling all inputs.
Setting the joystick range POTs
Most applications will use the factory default setting of the POTs and do not require any
adjustment. In applications where the input signal is not powered by the AXP-AI8 board and the
maximum input voltage range is less than 5 Volts, the output reading may be adjusted closer to full
scale, providing greater resolution.
Determine the maximum voltage that will be input to the board. Make sure that the 'LO' POT
(bottom right of board) (FIG. 3) is turned all of the way to counter-clockwise. Place the leads from
a voltmeter across the 'HI' and 'LO' reference test points located on the right side of the board and
adjust the 'HI' POT (bottom right of board) (FIG. 3) until the voltage on the meter matches the
maximum that will be input.
Switch 1 2 3 4 5 6 7 8
Value 1 2 4 8 16 32 64 128
FIG. 3 AXP-AI8 POTs
12345678
ON

Installation
4AXP-AI8 Eight-Channel Analog Interface Board
Wiring
FIG. 4 shows typical joystick wiring:
20-Pin Header
The following table lists the pinouts for the 20-pin header:
AXlink
To install the AXlink data/power bus wiring:
1. Strip .25 inch off the wire insulation for all four wires. If the wire is 20 AWG or less, fold the
exposed wire over to obtain a positive connection.
2. Insert each wire into the appropriate opening on the connector. See FIG. 4.
3. Turn the captive screws clockwise to secure the fit. Do not over torque the screw; doing so can
bend the seating pin and damage the connector.
FIG. 5 shows the wiring configuration for AXlink cables.
Be sure that the board input ground is connected to the voltage source ground prior
to applying a voltage to the input.
FIG. 4 Typical joystick wiring
20-Pin Header - Pinout Information
Pin Function Pin Function
1GND 11GND
2 INPUT 1 12 INPUT 6
3GND 13GND
4 INPUT 2 14 INPUT 7
5GND 15GND
6 INPUT 3 16 INPUT 8
7GND 17GND
8 INPUT 4 18 GND
9 GND 19 +5 VDC REF
10 INPUT 5 20 +5 VDC REF
19,20
2
17,18
Pan 4Tilt 6Zoom 8Focus
GND
+5V DC REF
+5 VDC REF 19,20
GND 17, 18
Pan 2 Zoom 6Tilt 4 Focus 8

Installation
5
AXP-AI8 Eight-Channel Analog Interface Board
Configuring the AXP-AI8
1. Set the device number.
2. Turn off any unused inputs.
3. Create a wiring diagram using the AXP-AI8 System Worksheet on page 7.
4. Connect the ribbon cable or the PC board to 20-pin header.
5. Connect the AXP-AI8 to the AXlink data/power bus.
6. Check the AXlink LED. It should blink once per second.
Testing
1. If you have programmed the Axcess software, load the program into a PC connected to the
control system Master port.
2. Select Diagnostics and Watch Variable; enter the name of the variable for Input 1.
 Note the value of the variable when the joystick is in the center position.
 Note the value of the variable when the joystick is at full right and left (or down and up)
position.
3. Adjust the programming to reflect the actual values for the three positions.
Using this method, you have the option of using the HI and LO adjustments to achieve a full
0-5 VDC range, 2.5 V center, or to adjust the Axcess programming to the actual values sent from
the AXP-AI8 inputs.
FIG. 5 AXlink wiring diagram
SYSTEM
GND
AXM
AXP
PWR
GND
AXM
AXP
PWR
PWR
AXP
AXM
GND
PWR
AXP
AXM
GND
System

Installation
6AXP-AI8 Eight-Channel Analog Interface Board
Programming
This section covers programming information and examples for the AXP-AI8 Analog Interface
Board.
Levels
Send_Commands
Inputs are controlled as Channels 1 through 8.
Sample Application
This is an example of Axcess programming that is required before using an AXP-AI8.
Example 1:
PROGRAM_NAME='AI8_EX rev 1'
(* DATE:06/18/02 TIME:17:32:26 *)
(* Date: 12/18/2001 Time: 11:50:50 AM AXedit user: JSHMOE *)
(*{{PS_SOURCE_INFO(PROGRAM STATS) *)
(** FIRST, the program under studio can be written many ways **)
(** but we have to stay within the boundaries of the compiler and **)
(** use of KEYWORDS. This file was created for an AXCESS system **)
(** master and when compiling in AXCESSX, the word BUTTON is NOT a KEYWORD **)
(***********************************************************)
(* FILE CREATED ON: 06/09/2000 AT: 13:56:05 *)
(***********************************************************)
(* FILE_LAST_MODIFIED_ON: 04/25/2001 AT: 16:59:10 *)
(***********************************************************)
Levels
Level Function
1 Voltage output channel 1 and joystick/slider control (0 - 255).
5 Voltage input channel 1 (0 - 255).
2 Voltage output channel 2 and joystick/slider control (0 - 255).
6 Voltage input channel 2 (0 - 255).
Send_Commands
SEND COMMAND AI8,"'DELTA5'" Puts channel 5 in delta mode.
SEND COMMAND AI8,"'DELTA6'" Puts channel 6 in delta mode.
SEND COMMAND AI8,"'DELTA7'" Puts channel 7 in delta mode.
SEND COMMAND AI8,"'DELTA5 ON'" Puts channel 5 in delta mode.
SEND COMMAND AI8,"'DELTA6 ON'" Puts channel 6 in delta mode.
SEND COMMAND AI8,"'DELTA7 ON'" Puts channel 7 in delta mode.
SEND COMMAND AI8,"'DELTA5 OFF'" Takes channel 5 out of delta mode.
SEND COMMAND AI8,"'DELTA6 OFF'" Takes channel 6 out of delta mode.
SEND COMMAND AI8,"'DELTA7 OFF'" Takes channel 7 out of delta mode.
Delta mode should be used with continuous rotation potentiometers. It effectively
filters out the dead zones and provides for smooth, uninterrupted readings.
Continued

Installation
7
AXP-AI8 Eight-Channel Analog Interface Board
(* ORPHAN_FILE_PLATFORM: 1 *)
(***********************************************************)
(*!!FILE REVISION: Rev 0 *)
(* REVISION DATE: 04/24/2001 *)
(* *)
(* COMMENTS: *)
(* *)
(***********************************************************)
(*}}PS_SOURCE_INFO *)
(***********************************************************)
(* DEVICE NUMBER DEFINITIONS GO BELOW *)
(***********************************************************)
DEFINE_DEVICE
AI8 = 64 (* EIGHT INPUT ANALOG BOARD *)
TP = 128 (* TOUCH PANEL *)
(***********************************************************)
(* CONSTANT DEFINITIONS GO BELOW *)
(***********************************************************)
DEFINE_CONSTANT
xBUTTON = 101 (* CHANNEL NUMBER FOR TOUCH PANEL BUTTON *)
//BUTTON = 101 (* CHANNEL NUMBER FOR TOUCH PANEL BUTTON *)
(***********************************************************)
(* VARIABLE DEFINITIONS GO BELOW *)
(***********************************************************)
DEFINE_VARIABLE
(* If you create a variable array then you have to call one of these array
elements below *)
(* Or setup the variables without an array *)
(*
IN1[2] (* VARIABLES IN WHICH TO STORE *)
IN2[2] (* ANALOG INPUT VALUES (LEVELS) *)
IN3[2]
IN4[2]
IN5[2]
IN6[2]
IN7[2]
IN8[2]
*)
IN1// (* VARIABLES IN WHICH TO STORE *)
IN2 (* ANALOG INPUT VALUES (LEVELS)*)
IN3
IN4
IN5
IN6
IN7
IN8
(*Each variable needs two bytes to hold the
input value which is why the form [2]
is used.*)
(** Each element of the array in this case will hold the Integer value **)
(***********************************************************)
(* LATCHING DEFINITIONS GO BELOW *)
(***********************************************************)
DEFINE_LATCHING
(***********************************************************)
(* MUTUALLY EXCLUSIVE DEFINITIONS GO BELOW *)
(***********************************************************)
DEFINE_MUTUALLY_EXCLUSIVE
(***********************************************************)
(* STARTUP CODE GOES BELOW *)
(***********************************************************)
DEFINE_START
CREATE_LEVEL AI8,1,IN1 (* HERE WE ASSOCIATE EACH AI8 *)
Continued
Each variable needs two bytes to hold the
input value which is why the form [2]
is used.

Installation
8AXP-AI8 Eight-Channel Analog Interface Board
CREATE_LEVEL AI8,2,IN2 (* INPUT WITH A VARIABLE NAME *)
CREATE_LEVEL AI8,3,IN3 (* IN WHICH TO STORE THE INPUT *)
CREATE_LEVEL AI8,4,IN4 (* ANALOG VALUE (LEVEL) *)
CREATE_LEVEL AI8,5,IN5
CREATE_LEVEL AI8,6,IN6
CREATE_LEVEL AI8,7,IN7
CREATE_LEVEL AI8,8,IN8
(*
CREATE_LEVEL AI8,1,IN1[1] (* HERE WE ASSOCIATE EACH AI8 *)
CREATE_LEVEL AI8,2,IN2[1] (* INPUT WITH A VARIABLE NAME *)
CREATE_LEVEL AI8,3,IN3[1] (* IN WHICH TO STORE THE INPUT *)
CREATE_LEVEL AI8,4,IN4[1] (* ANALOG VALUE (LEVEL) *)
CREATE_LEVEL AI8,5,IN5[1]
CREATE_LEVEL AI8,6,IN6[1]
CREATE_LEVEL AI8,7,IN7[1]
CREATE_LEVEL AI8,8,IN8[1]
*)
(***********************************************************)
(* THE ACTUAL PROGRAM GOES BELOW *)
(***********************************************************)
DEFINE_PROGRAM
//IF(IN1[1] < 51) (* THE LEVELS FROM THE AI8 RANGE FROM *)
IF(IN1 < 51) (* THE LEVELS FROM THE AI8 RANGE FROM *)
{ (* 0 - 1023 *)
// ON[TP,BUTTON]
// ON[TP,101]
ON[TP,xBUTTON]
}
//IF(IN5[1] = 795)
IF(IN5 = 795)
{
OFF[TP,xBUTTON]
// OFF[TP,BUTTON]
//OFF[TP,101]
}
(***********************************************************)
(* END OF PROGRAM *)
(* DO NOT PUT ANY CODE BELOW THIS COMMENT *)
(***********************************************************)
For additional information, refer to the Axcess Programming Language instruction manual.
Each variable needs two bytes to hold the input value which is why the form [2] is
used (ex: [2] makes it a two-byte variable).

System Worksheet
9
AXP-AI8 Eight-Channel Analog Interface Board
System Worksheet
Dealer ID #: _______________________________________
Dealer: ________________________________________
Job: ______________________________________________
Description: ________________________________________
Date: _____________________________________________
PO#: __________________________________________
SO#: _____________________________________________
Serial #: ___________________________________________
Rev# : ____________________________________________
Device #
20-Pin Header Function Color +5 V DC Reference Pin 20
1
2
3
4
5
6
7
8
Pin 18Input GND
Input
DC Reference Common
GND Common
2
4
6
8
10
12
14
16
Input
Input
Input
Input
Input
Input
Input
Input

AMX reserves the right to alter specifications without notice at any time.
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AMX reserves the right to alter specifications without notice at any time. *In Canada doing business as Panja Inc.