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NXC-COM2 Dual COM Port Control Card
6
NetLinx Cardframe, Control Cards, and NetModules - Operation Reference Guide
Pinouts and Wiring Configuration
NXC-COM2 Channel Assignment
NXC-COM2 Programming Information
NXC-COM2 Send_Commands
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 Description
255 CTS push channel - reflects the state of the CTS input if a 'CTSPSH' command was sent to the device.
NXC-COM2 Send_Commands
Command Description
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.