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Chapter 3: Connection Methods, Attributes and Configurable Features 29
NOTE: When a port is configured for the serial port redirection connection method, the attributes are specified
within the protocol. Therefore, although you may change the attributes, any changes you specify will not
take effect.
Table 3.10 lists the serial port attributes with their valid and default values.
Configurable Features
The Configurable Features display includes the current settings of the features described in
Table 3.11.
You may enable/disable these features using any of the available tools.
• Web interface - see Displaying or Changing Configurable Features on page 37
• Configuration utility - see Displaying or Changing Configurable Features on page 50
• Configuration file - see Configurable Features Commands on page 59
When the ESP serial hub is reinitialized, all configurable features are restored to their default
setting (enabled).
Table 3.10: Serial Port Valid and Default Values
Attribute Valid and Default Values
Baud rate
Valid values: 50, 75, 110, 134, 150, 200, 300, 600, 1200, 2400, 4800, 9600, 19200,
38400, 57600, 76800, 115200 and 230400 *
Default value: 19200
* The 230400 baud rate is not supported on ESP-8 MI or ESP-16 MI hubs. On ESP-2 MI
hubs, the aggregate rate of both ports cannot exceed 230400.
Bits per character
(size)
Valid values: 5, 6, 7 and 8
Default value: 8
Parity
Valid values: None, Even, Odd, Mark and Space
Default value: None
Stop bits
Valid values: 1 and 2
Default value: 1
Flow control
Valid values: None, XON/XOFF and RTS/CTS
Flow control settings are full duplex. RTS/CTS flow control is valid only on RS-232 ports.
Default value: None
Table 3.11: Configurable Features
Feature Description
Acquire IP address via
DHCP
When enabled, the IP address may be set using DHCP/BootP. When disabled, the
IP address must be set using the web interface, the configuration utility or the UDP
protocol (espcfg or NT driver coinstaller). The default value is enabled.