AMX NXC-COM2 User Manual
Installation Guide
NXC-COM2 Dual COM Port Card, 2 RS-232/422/485
NetLinx Control Cards and NetModules
NetLinx Control Cards can be installed in either the NXF CardFrame, NI-4000, or
NetModules. For detailed information on the cards, refer to the NetLinx CardFrame,
Control Cards, and NetModules Instruction Manual available on-line via
www.amx.com.
ICSNET Status LED
LED 1
LED 4
FIG. 1 NXC-COM2 Dual COM Port Control card
NXC-COM2 Specifications
The NXC-COM2 Dual COM Port Control Card provides two RS-232/422/485 control
ports and LED feedback for remote sources connected to the NetLinx CardFrame,
NI-4000, or NetModule:
NXC-COM2 (FG 2022) Specifications
Power Requirements: 140 mA @ 12 VDC
Operation: Data 1-2: Two RS-232/422/485 control ports, supports
Status LEDs
(2 per channel):
Connections/wiring: Two 10-pin 3.5 mm captive-screw terminals
DEVICE_ID: $0107
XON/XOFF, CTS/RTS
• Red LEDs show TX (transmit) data activity
• Yellow LEDs show RX (receive) data activity
- LED 1: CH1 TX (red)
- LED 2: CH1 RX (yellow)
- LED 3: CH2 TX (red)
- LED 4: CH2 RX (yellow)
• Green ICSP status LED (located on the board):
- On = card is not in communication with the Master.
- Blinks (1-second intervals) during normal operation.
NXC-COM2 Pinouts and Wiring Information:
NXC-COM2 Pinouts NXC-COM2 Wiring Configuration
Pin Signal Function RS-232 RS-422 RS-485
1 GND Signal ground X X
2 RXD1 Receive data X
3 TXD1 Transmit data X
4 CTS1 Clear to send X
5 RTS1 Request to send X
6 TX1+ Transmit data X X (strap to pin 8)
7 TX1- Transmit data X X (strap to pin 9)
8 RX1+ Receive data X X (strap to pin 6)
9 RX1- Receive data X X (strap to pin 7)
10 +12 VDC Power Optional Optional
11 GND Signal ground X X
12 RXD2 Receive data X
13 TXD2 Transmit data X
14 CTS2 Clear to send X
15 RTS2 Request to send X
16 TX2+ Transmit data X X (strap to pin 18)
17 TX2- Transmit data X X (strap to pin 19)
18 RX2+ Receive data X X (strap to pin 16)
19 RX2- Receive data X X (strap to pin 17)
20 +12 VDC Power Optional Optional
NXC-COM2 Channel Assignment:
Channel 255 is the CTS (Clear To Send) push channel. It reflects the state of the CTS
input if a 'CTSPSH' command was sent to the device.
NXC-COM2 Programming Information:
NXC-COM2 Send_Commands
B9MOFF
Disable 9-bit in
232/422/455 mode.
This command works in
conjunction with the
B9MON command.
B9MON
Enable 9-bit in
232/422/455 mode.
This command works in
conjunction with the
B9MOFF command.
CHARD
Set the delay time
between all transmitted
characters to the value
specified (in 100 microsecond increments).
CHARDM
Set the delay time
between all transmitted
characters to the value
specified
(in 1 millisecond
increments).
CTSPSH
Enable Pushes,
Releases, and status
information to be reported
via channel 255 using the
CTS hardware handshake
input.
CTSPSHOFF
Disable Pushes,
Releases, and Status
information to be reported
via channel 255.
GET BAUD
Get the RS-232/422/485
port’s current
communication parameters.
Device sends the
response out the Master
program port.
HSOFF
Disable hardware
handshaking (default).
HSON
Enable RTS
(ready-to-send) and CTS
(clear-to-send) hardware
handshaking.
RXCLR
Clear all characters in the
receive buffer waiting to
be sent to the Master.
RXOFF
Disable the transmission
of incoming received
characters to the Master
(default).
Syntax:
SEND_COMMAND <DEV>,"'B9MOFF'"
Example:
SEND_COMMAND SOMEDEVICE_1,"'B9MOFF'"
Sets the port settings on SOMEDEVICE to match the port's
configuration settings.
Syntax:
SEND_COMMAND <DEV>,"'B9MON'"
Example:
SEND_COMMAND SOMEDEVICE_1,"'B9MON'"
Resets the SOMEDEVICE port's communication parameters to
nine data bits and one stop bit.
Syntax:
SEND_COMMAND <DEV>,"'CHARD-<Time>'"
time: 0 - 255. Measured in 100 microsecond increments.
Example:
SEND_COMMAND RS232_1,"'CHARD-10'"
Sets a 1-millisecond delay between all transmitted characters.
Syntax:
SEND_COMMAND <DEV>,"'CHARDM-<Time>'"
time: 0 - 255. Measured in 1 millisecond increments.
Example:
SEND_COMMAND RS232_1,"'CHARDM10'"
Sets a 10-millisecond delay between all transmitted
characters.
If Clear To Send (CTS) is set high, then channel 255 is On.
Syntax:
SEND_COMMAND <DEV>,"'CTSPSH'"
Example:
SEND_COMMAND RS232_1,"'CTSPSH'"
Sets the RS232_1 port to detect changes on the CTS input.
Syntax:
SEND_COMMAND <DEV>,"'CTPSH OFF'"
Example:
SEND_COMMAND RS232_1,"'CTSPSH OFF'"
Disables the RS232_1 port to detect changes on the CTS
input.
Syntax:
SEND_COMMAND <DEV>,"'GET BAUD'"
Example:
SEND_COMMAND RS232_1,"'GET BAUD'"
Device responds with:
<port #>,<baud>,<parity>,<data>,<stop>
485 <ENABLED | DISABLED>
Syntax:
SEND_COMMAND <DEV>,"'HSOFF'"
Example:
SEND_COMMAND RS232_1,"'HSOFF'"
Disables hardware handshaking on the RS232_1 device.
Syntax:
SEND_COMMAND <DEV>,"'HSON'"
Example:
SEND_COMMAND RS232_1,"'HSON'
Enables hardware handshaking on the RS232_1 device.
Syntax:
SEND_COMMAND <DEV>,"'RXCLR'"
Example:
SEND_COMMAND RS232_1,"'RXCLR'"
Clears all characters in the RS232_1 device's receive buffer.
Syntax:
SEND_COMMAND <DEV>,"'RXOFF'"
Example:
SEND_COMMAND RS232_1,"'RXOFF'"
Stops the RS232_1 device from transmitting received
characters to the Master.
NXC-COM2 Send_Commands (Cont.)
RXON
Start transmitting received
characters to the
Master (default).
SET BAUD
Set the RS-232/422/485
port's communication
parameters.
TSET BAUD
Temporarily set the
RS-232/422/485 port's
communication parameters for a device.
TXCLR
Stop and clear all
characters waiting in the
transmit out buffer and
stops transmission.
XOFF
Disable software
handshaking (default).
XON
Enable software
handshaking.
This command is sent automatically when a
CREATE_BUFFER Send_Command is executed.
Syntax:
SEND_COMMAND <DEV>,"'RXON'"
Example:
SEND_COMMAND RS232_1,'RXON'"
Stops the RS232_1 device from transmitting received
characters to the Master.
Syntax:
SEND_COMMAND <DEV>,"'SET BAUD
<baud>,<parity>,<data>,<stop> [485
<Enable | Disable>]'"
• Baud: 230400, 115200, 76800, 57600, 38400, 19200,
9600, 4800, 2400, 1200, 600, 300, 150
• Parity: N (none), O (odd), E (even), M (mark), S
(space)
• Data Bits: 7 or 8 data bits
• Stop Bits: 1 and 2 stop bits
The only valid 9 bit combination is (baud),N,9,1.
• 485 Enable: Enables RS-485 mode and disables
RS-232/422
• 485 Disable: Disables RS-485 mode and enables
RS-232/422
Examples:
SEND_COMMAND RS232_1,"'SET BAUD
115200,N,8,1 485 ENABLE'"
Sets the RS232_1 port's communication parameters to
115,200 baud, no parity, 8 data bits, 1 stop bit, and enables
RS-485 mode.
Syntax:
SEND_COMMAND <DEV>,"'TSET BAUD
<baud>,<parity>,<data>,<stop> [485
<Enable | Disable>]'"
• Baud: 230400, 115200, 76800, 57600, 38400, 19200,
9600, 4800, 2400, 1200, 600, 300, 150
• Parity: N (none), O (odd), E (even), M (mark), S
(space)
• Data Bits: 7 or 8 data bits
• Stop Bits: 1 and 2 stop bits
The only valid 9 bit combination is (baud),N,9,1.
• 485 Enable: Enables RS-485 mode and disables
RS-232/422
• 485 Disable: Disables RS-485 mode and enables
RS-232/422
Examples:
SEND_COMMAND RS232_1,"'SET BAUD
9600,N,8,1 485 DISABLE'"
SEND_COMMAND RS232_4,"'SET BAUD
115200,N,8,1 485 ENABLE'"
TSET BAUD works the same as SET BAUD, except that the
changes are not permanent, and the previous values will be
restored if the power is cycled on the device.
Syntax:
SEND_COMMAND <DEV>,"'TXCLR'"
Example:
SEND_COMMAND RS232_1,"'TXCLR'"
Clears and stops all characters waiting in the RS232_1
device's transmit buffer.
Syntax:
SEND_COMMAND <DEV>,"'XOFF'"
Example:
SEND_COMMAND RS232_1,"'XOFF'"
Disables software handshaking on the RS232_1 device.
Syntax:
SEND_COMMAND <DEV>,"'XON'"
Example:
SEND_COMMAND RS232_1,"'XON'"
Enables software handshaking on the RS232_1 device.
NXC-COM2 Send_String Escape Sequences
This card has some special SEND_STRING escape sequences:
If any of the 3 character combinations below are found anywhere within a
SEND_STRING
program instruction, they will be treated as a command and not the literal characters:
27,17,<time>
Send a break character
for a specified duration to
a
specific device.
27,18,0
Clear the ninth data bit by
setting it to 0 on all
character transmissions.
This command is used in
conjunction with the
B9MON
Send_Command.
27,18,1
Set the ninth data bit to 1
for all subsequent characters to be transmitted.
This command is used in
conjunction with the
B9MON
Send_Command.
27,19,<time>
Insert a time delay before
transmitting the next
character.
27,20,0
Set the RTS hardware
handshake's output to
high
(> 3V).
27,20,1
Assert sets the RTS
hardware handshake's
output to low (< 3V).
Syntax:
SEND_STRING <DEV>,"27,17,<time>"
time: 1 - 255. Measured in 100 microsecond increments.
Example:
SEND_STRING RS232_1,"27,17,10"
Sends a break character of 1 millisecond to the RS232_1
device.
Syntax:
SEND_STRING <DEV>,"27,18,0"
Example:
SEND_STRING RS232_1,"27,18,0"
Sets the RS232_1 device's ninth data bit to 0 on all character
transmissions.
Syntax:
SEND_STRING <DEV>,"27,18,1"
Example:
SEND_STRING RS232_1,"27,18,1"
Sets the RS232_1 device's ninth data bit to 1 on all character
transmissions.
Syntax:
SEND_STRING <DEV>,"27,19,<time>"
time: 1 - 255. Measured in 1 millisecond increments.
Example:
SEND_STRING RS232_1,"27,19,10"
Inserts a 10 millisecond delay before transmitting characters
to the RS232_1 device.
Syntax:
SEND_STRING <DEV>,"27,20,0"
Example:
SEND_STRING RS232_1,"27,20,0"
Sets the RTS hardware handshake's output to high on the
RS232_1 device.
Syntax:
SEND_STRING <DEV>,"27,20,1"
Example:
SEND_STRING RS232_1,"27,20,1"
Sets the RTS hardware handshake's output to low on the
RS232_1 device.
For full warranty information, refer to the AMX Instruction Manual(s) associated with your Product(s).
©2008 AMX. All rights reserved. AMX and the AMX logo are registered trademarks of AMX.
3000 RESEARCH DRIVE, RICHARDSON, TX 75082 • 800.222.0193 • fax 469.624.7153 • technical support 800.932.6993 • www.amx.com
AMX reserves the right to alter specifications without notice at any time.
7/08
93-2022 REV: F
Loading...