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Quatech Device Server User Manual

Page 73

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Quatech SDS User’s Manual

Configuring the SDS using a Web interface

October 2006

940-0183-154

Page 67

Step

Procedure

Description
performance for most applications.

Low Latency mode heavily favors
responsiveness over throughput.

‰

Step 3c

Set the Heart Beat Time to a value from 1

to 65534 seconds. Default is 45 seconds.

Note: Use a value of 0 to disable the heartbeat
timer.

Heartbeat messages help detect when a

connection has been lost between the PC
driver and the SDS.
If you need quick notification that the

connection has been lost, set this timer to
a shorter value.
If you are more concerned about network

traffic, set this timer to a longer value.

‰

Step 3d

Set the Baud Rate.

The SDS and the serial device(s) to
which it is attached must use the same

serial connection speed.

‰

Step 3e

Set the Parity.

Parity can be odd, even, or none.

‰

Step 3f

Set the Data Bits.

Data Bits can be 7 or 8.

‰

Step 3g

Set the Stop Bits.

Stop Bits can be 1 or 2.

Step

Procedure

Description

‰

Step 3h

Set the Flow Control.

Flow control determines the handshake

method used between the SDS and the

serial device(s) to stop the serial
input/output process

‰

Step 3i

Click on the desired Auto TCP Mode

selector.

Your choices are:

¾

DSR – Initiate the TCP connection

when the SDS serial port’s DSR

becomes active

¾

Data – Initiate the TCP connection

when the SDS serial port receives data

This selection determines whether the

SDS port will initiate a communications

link when DSR becomes active or when
data is received at the serial port.
Typically, the DTR output of the device

to which you are connecting drives the
DSR input on the SDS serial port.

‰

Step 3j

Set the Auto TCP timeout interval if you

selected Data as the Auto TCP Mode.

Note: This selection is only available if the
Auto TCP Mode selector is set to Data.
Otherwise, it is grayed out.

Sets the number of seconds before the

TCP connection is dropped after data
stops.

‰

Step 3k

Set the IP Address of the TCP host to

which the SDS will connect.

This selection sets the IP address to be

used in Auto TCP mode.

‰

Step 3l

Set the TCP Port number of the TCP host

to which the SDS will connect.

This selection sets the TCP port for Auto

TCP modes.

Steps 4a through 4d apply only to RS-232/422/485 (MEI) units

‰

Step 4a

Configure the serial port interface.

This series of steps only applies to MEI