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 ..................................................................
Table of Contents ii AXC-232++ RS-232/422/485 Interface Card
Introduction 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.
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, 422, or RS-485 data. DIP Switch RS- 8-position RS-232/422DIP switch. See Setting the RS-232/422 DIP Switch section on page 4 for configuration details. Asynchronous data standards • Baud rates - 300, 600, 1200. 2400, 4800, 9600, 19200 and 38400.
Installation and Wiring Installation and Wiring Setting the Internal Jumpers The AXC-232++ can be used as an independent RS-232/422/485-controlled interface by setting the internal jumpers (JP1 and JP2). FIG. 1 indicates the location of the jumpers on the card. Static electricity can damage electronic components. Before opening the device, discharge any accumulated static electricity from your body by touching a grounded metal object.
Installation and Wiring Setting the RS-232/422 DIP Switch Set the stop bits, data bits, parity, and baud rate on the RS-232/422 DIP switch (see FIG. 1). The AXC-232++ supports the following asynchronous data standards: Stop bits 1 and 2 Data bits 7, 8, and 9 Parity None, Odd, Even, Mark, and Space Baud rates 300, 600, 1,200, 2,400, 4,800, 9,600, 19,200 and 38,400.
Installation and Wiring Wiring Devices to the AXC-232++ Card Edge Pinouts The table below lists the card edge pinouts and the function of each.
Installation and Wiring Using RS-422 When communicating via RS-422, connect the wiring as shown in FIG. 3. GND RX TX +12V AXCAXB232++ GND TXTX+ RX- RX RX + TX TX + Device RX+ FIG. 3 RS-422 wiring Using RS-485 When communicating via RS-485, connect the wiring as shown in FIG. 4. AXCAXB232++ 232++ GND RX TX +12V RX RX + TX TX + Device FIG. 4 RS-485 wiring To enable RS-485, set jumper J2 to the ON position (refer to Setting the Internal Jumpers on page 7).
Installation and Wiring Replacing the Lithium Batteries The AXC-232++’s lithium batteries have a life of approximately 5 years to protect its memory. When DC power is on, the batteries are not used. When you install the AXC-232++, record the date the batteries should be replaced. There is a danger of explosion if you replace the batteries incorrectly. Replace batteries with the same or equivalent type recommended by the manufacturer.
Installation and Wiring 8 AXC-232++ RS-232/422/485 Interface Card
Programming Programming Send_Commands The AXC-232++ supports the same command set as the AXC-232. Figure 20 lists the AXC-232++ Send_Commands. AXC-232++ Send_Commands B9MOFF Sets data bit mode to normal with DIP switch settings (default). Syntax: 'B9MOFF' Example: SEND_COMMAND AXC232,'B9MOFF' Sets the data bit mode to normal. B9MON Enables a special mode to override DIP switch settings. Syntax: 'B9MON' The mode, nine data bits with one stop bit, overrides the data, stop, and parity settings.
Programming AXC-232++ Send_Commands (Cont.) CHARD Syntax: Sets delay between all transmitted characters to increment specified. Variable: 'CHARD-
Programming AXC-232++ Send_Commands (Cont.) RXOFF Syntax: AXC-232++ does not pass on 'RXOFF' received characters to the Example: AXC-EM (default). SEND_COMMAND AXC232,'RXOFF' AXC-232++ does not pass on received characters to the AXC-EM. RXON Syntax: Enables AXC-232++ to send 'RXON' incoming characters received Example: to the AXC-EM. SEND_COMMAND AXC232,'RXON' Enables AXC-232++ to send incoming characters received to the AXC-EM.
Programming Send_String Escape Sequences The AXC-232++ does not regard certain three-character combinations within a Send_String program as literal characters, but as commands. The following table lists those combinations. Send_String Escape Sequences 27,17,
Programming AXC-232++ statements The Axcess program of the AXC-232++ communicates with the AXC-EM as Device 0. Its device communicates with the RS232/422 Input/Output (I/O) of the AXC-232++ as Device 1. The following table lists AXC-232++ statements. AXC-232++ Program Statements Statement Function CREATE_BUFFER 0,buffer Places strings that come from the AXC-EM into buffer. If no CREATE_BUFFER 0 exists, the incoming strings from the AXC-EM are sent out the RS232 port.
Programming Xmodem Timing Commands The following table lists the AXC-232++ Xmodem timing commands. Xmodem timeouts exist to accommodate potential Ethernet delays and for consistency among and within products. Any Xmodem timing command will change timing and retries for Axcess code download as well as SOFTROM transfer. Xmodem Timing Commands Command Description 'TIMEOUT XX' Xmodem timeouts via the Program Port. (Default is 10 sec.
Programming Reserved Channels The following table lists the channels reserved on Device 0. Reserved Channels Channel Function Channel 254 This is only valid within the device and is not sent to the AXlink master. Reflects AXlink status: • When AXlink is active, this channel is on. • When AXlink is inactive, this channel is off. • When this channel changes state, the AXC-232++ generates a PUSH or RELEASE. Channel 255 Reflects the state of the CTS input.
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