Eurotech ZyWAN, User Manual

Page: 103 / 130

PART 2: SOFTWARE CONFIGURATION
103 110150-1001F
FIELD/OPTION EXPLANATION
Print Server This option is used when the Terminal Server is used as a print
server to a serial printer. Setting this option to Yes causes the
Terminal Server to operate in Print Server mode. The Terminal
Server absorbs as much IP data as it can within the available
memory and sends data to the serial port until it is all delivered,
regardless of whether the host disconnects.
When this option is set to
No
(default mode), if a host
disconnects and data is still in the Terminal Server buffer, the
remaining data is discarded and will not be sent to the serial
port.
Number of Servers Enter the number of simultaneous clients which can connect to
this Terminal Server simultaneously. Values must be between 1
and 8.
If this is set to 1, the Terminal Server is pre-emptive. This
means that if a second client connects to the port, an already-
connected client is disconnected.
With Number of Servers set to 2 or greater, any further
connections are blocked when the number of simultaneous
connections have been made.
Password Enter a non-blank field as a password for the Terminal Server, if
desired. The password must be no longer than 15 characters.
When this is set, making a connection to the Terminal Server
port returns a prompt for ‘Password’. If the correct password
(case-sensitive) is not entered within a minute, the connection is
dropped.
Buffer Size Enter the maximum number of bytes (between 1 and 4095)
which are allowed in a response to a network client. (The actual
number of bytes sent may be less if the Demark timer times out
before the serial buffer is full.)
Demark Timer
Enter the maximum time (in milliseconds, between 10 and
30000) the ZyWAN waits for inactivity on the serial port before
sending a response to the network client, if at least one byte has
been received.
Response Timeout This option only applies if the Duplex option is set to Half
Duplex . Otherwise, this field is ignored.
Enter the Response Timeout (in milliseconds, between 10 and
30000). For simple request-response networks (half-duplex),
the request from a network client is sent to the serial port. If no
serial response is received within the Response Timeout , the
Terminal Server does not read any more serial data until the
next request and the serial port is released.
Serial Ports Table
The Serial Ports Table is part of the Terminal Server configuration as shown in the following screen capture.
At least one row must be configured in the Serial Ports Table for it to work properly.