Microwave Data Systems MDS entraNET 2400 Especificaciones descargar pdf (Pagina 54)

46 MDS entraNET 900 System Guide MDS 05-4055A01, Rev. A

The following text explains the key settings for the serial configuration

menus.

• Port Status—Enable/Disable the serial data port.

NOTE: Setting the COM1 port to Enable prevents access of the

entraNET Management System (MS) through this port.

However, the entraNET MS can still be accessed via Telnet or

browser through the LAN port.

To restore the COM1 port to support Management System

access, connect a terminal to the port and enter an escape

sequence to reset it the console mode. (+++ ENTER)

• Mode—Serial-to-Serial, TCP (IP-to-Serial), UDP

(IP-to-Serial).

• Remote UnitID—”Broadcast” or Unit ID of Remote for

unicast (directed) data.

• Remote COM Port—Remote’s serial port (COM1 or

COM2 with which to exchange data.

• Baud Rate—Data rate (payload) for the

COM port in

bits-per-second. [1,200–115,200; 19200]

• Byte Format—Interface signaling parameters. Data bits,

parity and stop bits.

[7N1, 7E1, 7O1, 8N1, 8E1, 8O1; 8N1]

• Seamless Mode—Seamless mode accommodates proto-

cols that do not tolerate gaps in the middle of a frame (e.g.,

MODBUS™ ASCII). In these protocols, gaps are interpreted

by the connected device as an “end-of-frame” indication,

which may cause errors.Seamless mode resolves this prob-

lem through the use of buffers.

When Seamless mode is enabled, the buffer is set to 256

bytes. Data bytes are sent over the air as soon as they are

received at the local serial port. At the other end of the link,

the receiving radio buffers incoming data until enough char-

acters have been received to cover the worst case (longest)

gaps in transmission. (These generally occur during

over-the-air retries.) This ensures a continuous stream of data

will be delivered out the remote end’s serial port and to the

connected device.

When Seamless mode is disabled, the buffer size is set to the

last value set in the custom buffer parameter. [Enabled, Dis-

abled; Disabled]

NOTE: Seamless mode is intended only for applications where the

transmitter’s baud rate is greater than or equal to the receiver’s

baud rate. Enforcement of this rule is left up to the user.

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