MSS User Guide

4: Configuration

The examples in Figure 4-40and Figure 4-41 can be visualized as: x x x xxx xx (data) x x xx xxxxxxxx xx xxx Z xx xxxx

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transmit packet

The complete syntax of the Change Port [Portlist] Datasend command is described in the MSS Reference Manual.

Baud Rate

The MSS and attached serial device, such as a modem, must agree on a speed or baud rate to use for the serial connection. Valid baud rates for the MSS-VIA are 300, 600, 1200, 2400, 4800, 9600 (the default), 19200, 38400, 57600, 115200, and 230400 baud. The baud rate can be changed with the CHANGE PORT SPEED command (for the MSS- VIA and MSS4) or the CHANGE SPEED command (for the MSS100) followed by a baud rate number.

Figure 4-42: Changing the Baud Rate for MSS-VIA and MSS4

Local>> CHANGE PORT 1 SPEED 19200

Figure 4-43: Changing the Baud Rate for MSS100

Local>> CHANGE SPEED 19200

The MSS supports Autobaud, which allows the serial port to match its speed to the attached serial device upon connection (see Change Port Autobaud in the MSS Reference Manual for an explanation of the baud rate negotiation process). Autobaud is disabled by default, but can be enabled with the following command.

Figure 4-44: Enabling Autobaud for MSS-VIA and MSS4

Local>> CHANGE PORT 1 AUTOBAUD ENABLED

Figure 4-45: Enabling Autobaud for MSS100

Local>> CHANGE AUTOBAUD ENABLED

Character Size, Parity, and Stop Bits

The default character size of 8 data bits can be changed to 7 data bits. Similarly, the default stop bit count of 1 bit can be changed to 2 bits. Parity is normally None, but can also be Even, Mark, Odd, or Space. To change these parameters, use the following commands:

Figure 4-46: Configuring Serial Port Parameters for MSS-VIA and MSS4

Local>> CHANGE PORT 1 CHARSIZE 7

Local>> CHANGE PORT 1 STOPBITS 2

Local>> CHANGE PORT 1 PARITY EVEN

Figure 4-47: Configuring Serial Port Parameters for MSS100

Local>> CHANGE CHARSIZE 7

Local>> CHANGE STOPBITS 2

Local>> CHANGE PARITY EVEN

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Lantronix Hub manual Baud Rate, Character Size, Parity, and Stop Bits