Quatech Device Server - Manual (Page 77)

Quatech SDS User’s Manual Configuring the SDS using a Web interface
October 2006 940-0183-154 Page 71
Step Procedure Description
responsiveness over throughput.
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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 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 Set the UDP/IP Address.
These are your options:
¾ Multicast
¾ Broadcast
¾ Point to point
This selection determines the destination
IP address where data will be sent.
For multicast, enter a valid multicast IP
address (244.0.0.0 – 239.255.255.255) to
broadcast data to a specific multicast group.
For broadcast, enter 255.255.255.255 to
broadcast the serial data to all devices
ready to accept data.
For point to point, enter a specific
address to which the SDS can send UDP
packets containing serial data.
‰
Step 3j Set the UDP port designation. Enter a valid UDP port number to which
the SDS can send. The SDS will receive
on both port 5000 and on the designated
serial port number.
‰
Step 3k Set the TTL value. This selection sets the TTL (Time To
Live) value for multicast packets. Each
router decrements the TTL value of the
packet and will only forward a packet if
its value is greater than the threshold
configured on the router. The following
are standard settings:
¾ 0 Restricted to host
¾ 1 Restricted to subnet
¾ 15 Restricted to site
¾ 63 Restricted to region