Perle IOLAN + Rack User And Administration Manual page 78

+ - User and Administration Guide
IOLAN
72
There are three mandatory arguments the daemon requires to
mediate between the client and server port:
Server: The host name of IOLAN+ that has the attached
printer or terminal.
Port: The TCP port on which the IOLAN+ port is
listening for connection requests.
Link: A mnemonic filename in /dev which shall be
linked to the slave pseudo-tty selected by the
daemon. This should be used as the interface
device for client processes since the pseudo-tty
may change during the daemon lifetime.
The other optional arguments modify the behaviour of the
daemon in the way it controls connections, and processes
data to and from the peripheral. They are defined as follows:
Enable Telnet protocol processing. This is useful to
-T
ensure that the last data block of a print job has reached
IOLAN+ before closing the TCP connection. If the end
of print jobs are still being lost despite using this option
then it is advised to set the stty option 'noflsh' on the
slave pseudo-tty if it is supported. This may require the
-m or -a options. Alternatively, most line printer spoolers
employ a delay before closing the printer port to ensure
no pending output is accidentally flushed. It may be
possible to increase this delay if the above solutions are
not enough. Make sure the port is set to telnet mode in
the Port Setup Menu .
The daemon maintains a continuous TCP connection to the
-p
IOLAN+ port. This is useful for applications that require
exclusive and uninterrupted access to a device. Note that
no other daemon will be able to access such a port if any
daemon is running to that port with this option.