AMX NXC-COM2 - 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.

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 Pinouts and Wiring Information:

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:

FIG. 1

NXC-COM2 Dual COM Port Control card

NXC-COM2 (FG 2022) Specifications

Power Requirements:

140 mA @ 12 VDC

Operation:

Data 1-2: Two RS-232/422/485 control ports, supports
XON/XOFF, CTS/RTS

Status LEDs
(2 per channel):

• 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.

Connections/wiring:

Two 10-pin 3.5 mm captive-screw terminals

DEVICE_ID:

$0107

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

ICSNET Status LED

LED 1

LED 4

NXC-COM2 Send_Commands

B9MOFF

Disable 9-bit in
232/422/455 mode.
This command works in
conjunction with the
B9MON command.

Syntax:

SEND_COMMAND <DEV>,"'B9MOFF'"

Example:

SEND_COMMAND SOMEDEVICE_1,"'B9MOFF'"

Sets the port settings on SOMEDEVICE to match the port's
configuration settings.

B9MON

Enable 9-bit in
232/422/455 mode.
This command works in
conjunction with the
B9MOFF command.

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.

CHARD

Set the delay time
between all transmitted
characters to the value
specified (in 100 micro-
second increments).

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.

CHARDM

Set the delay time
between all transmitted
characters to the value
specified
(in 1 millisecond
increments).

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.

CTSPSH

Enable Pushes,
Releases, and status
information to be reported
via channel 255 using the
CTS hardware handshake
input.

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.

CTSPSHOFF

Disable Pushes,
Releases, and Status
information to be reported
via channel 255.

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.

GET BAUD

Get the RS-232/422/485
port’s current
communication parame-
ters.
Device sends the
response out the Master
program port.

Syntax:

SEND_COMMAND <DEV>,"'GET BAUD'"

Example:

SEND_COMMAND RS232_1,"'GET BAUD'"

Device responds with:

<port #>,<baud>,<parity>,<data>,<stop>
485 <ENABLED | DISABLED>

HSOFF

Disable hardware
handshaking (default).

Syntax:

SEND_COMMAND <DEV>,"'HSOFF'"

Example:

SEND_COMMAND RS232_1,"'HSOFF'"

Disables hardware handshaking on the RS232_1 device.

HSON

Enable RTS
(ready-to-send) and CTS
(clear-to-send) hardware
handshaking.

Syntax:

SEND_COMMAND <DEV>,"'HSON'"

Example:

SEND_COMMAND RS232_1,"'HSON'

Enables hardware handshaking on the RS232_1 device.

RXCLR

Clear all characters in the
receive buffer waiting to
be sent to the Master.

Syntax:

SEND_COMMAND <DEV>,"'RXCLR'"

Example:

SEND_COMMAND RS232_1,"'RXCLR'"

Clears all characters in the RS232_1 device's receive buffer.

RXOFF

Disable the transmission
of incoming received
characters to the Master
(default).

Syntax:

SEND_COMMAND <DEV>,"'RXOFF'"

Example:

SEND_COMMAND RS232_1,"'RXOFF'"

Stops the RS232_1 device from transmitting received
characters to the Master.