AMX RS-232, RS-422, RS-485 User Manual
instruction manual
AXC-232++
RS-232/422/485 Interface Card
Axcess Control Cards
Table of Contents
Table of Contents
Introduction ...............................................................................................................1
Specifications .................................................................................................................... 1
Installation and Wiring .............................................................................................3
Setting the Internal Jumpers ............................................................................................. 3
Setting jumper JP1 to terminate RS-422 input with 100 ohms................................................. 3
Setting jumper JP2 to set the RS-422 port for RS-485 use ..................................................... 3
Setting the RS-232/422 DIP Switch .................................................................................. 4
Wiring Devices to the AXC-232++..................................................................................... 5
Card Edge Pinouts ................................................................................................................... 5
Preparing captive wires ............................................................................................................ 5
Using RS-232........................................................................................................................... 5
Using RS-422........................................................................................................................... 6
Using RS-485........................................................................................................................... 6
Using Hardware Handshaking ................................................................................................. 6
Installing the AXC-232++ in a CardFrame: .............................................................................. 6
Replacing the Lithium Batteries ............................................................................................... 7
Programming ............................................................................................................9
Send_Commands.............................................................................................................. 9
Axcess program characteristics ............................................................................................. 11
Send_String Escape Sequences..................................................................................... 12
AXC-232++ statements.......................................................................................................... 13
Xmodem Timing Commands........................................................................................... 14
AXlink Master Statements ............................................................................................... 14
Reserved Channels......................................................................................................... 15
Axcess Master Mode....................................................................................................... 15
AXC-232++ RS-232/422/485 Interface Card
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Table of Contents
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AXC-232++ RS-232/422/485 Interface Card
Introduction
Many audiovisual and computer-based devices can be remotely controlled using RS-232, RS-422,
or RS-485 commands. The AXC-232++ RS-232/422/485 Interface Card can generate virtually
unlimited numbers of product/function commands as they are programmed into the AXC-EM
Master Card. As needs and technology change, existing cards can be reprogrammed or new cards
added, one for each device.
One AXC-232++ card (FIG. 1) is required for each RS-232/422/485 controlled piece of equipment.
The AXC-232++ card has a DIP switch to set communications parameters (data bits, stop bits,
parity, and baud rates from 300 to 115,200 bps).
Introduction
Card edge pinouts
Internal jumper J1
Lithium batteries
8-position RS-232/422
DIP switch
Internal jumper J2
LED indicator for data
transmission (TX)
FIG. 1 AXC-232++
LED indicator for data
reception (RX)
Onboard processing and memory allows the controller to take on complex tasks by itself, reducing
the processing burden for the AXlink master program. For example, the master program can use
simplified commands for generic video switcher or codec control, while a modular driver program
in the AXC-232++ handles control for specific makes and models.
Specifications
The table below lists the AXC-232++ specifications.
Specifications
Dimensions 2.7" (69.3 mm) height
12.8" (325.6 mm) depth
Power requirement 12 VDC
Power consumption 160 mA
Weight 4.8 oz (136.1 g)
Mounting Inserts into an Axcess CardFrame
AXC-232++ RS-232/422/485 Interface Card
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Introduction
Specifications (Cont.)
LEDs:
RX/TX: Red LED indicators for data transmission
RX: Red LED blinks to indicate that the AXC-232++ is receiving RS-232,
RS-422, or RS-485 data.
TX: Red LED blinks to indicate that the AXC-232++ is sending RS-232, RS-
422, or RS-485 data.
DIP Switch 8-position RS-232/422DIP switch.
See Setting the RS-232/422 DIP Switch section on page 4 for configuration
details.
Asynchronous data
standards
Connectors:
• RS-232 Hardware handshaking (RTS/CTS) data control jack (3-pin male)
• RS-422 RS-232/422 data control jack (4-pin male)
• +12VDC Auxiliary power jack (1-pin male)
• RS-232 RS-232 data control jack (3-pin male)
• AXlink AXlink bus jack (4-pin male)
Buffer • 1000 byte input buffer
Internal jumpers Sets differential input termination to enable RS-485 output.
Processor 32-bit processor
Memory 384K of non-volatile memory (memory runs Axcess programs independent of
• Baud rates - 300, 600, 1200. 2400, 4800, 9600, 19200 and 38400.
57600 is supported via the BAUDMED Send Command (see
Send_Commands section on page 9 for details).
115200 is supported via the BAUDHIGH Send Command (see the
Send_Commands section on page 9 for details).
• Data bits - 7, 8, and 9
• Stop bits - 1 and 2
•Parity - None, Odd, Even, Mark and Space
• 1000 byte AXlink buffer
the master program. This relieves the AXlink bus and the master of the processing time for controlling those devices; requires Axcess version 3.0 or
higher).
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AXC-232++ RS-232/422/485 Interface Card
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