GE GFK-1852 - Manual (Page 38)

4-16 VersaMax Serial to Ethernet Adapter User's Manual – July 2000 GFK-1852
4
In some applications, CRC, Checksum, or other trailers follow the
end-of-sequence character. In these cases, this option helps to adapt frame
transmission to the frame boundary.
If bit 4 is set, VMSE interprets the Sendchars as a 2-byte sequence; if reset, they will
be interpreted independently.
If bit 5 is not set, any other characters already in the serial buffer will be included in
the transmission after a “transmit” condition is found. If the bit is set, the VMSE will
immediately send after recognizing the transmit condition (sendchar or timeout).
NOTE: A transmission might occur if status information has to be exchanged or an
acknowledgement has to be sent.
Send Characters
Up to two characters can be entered in hexadecimal representation in the parameter
“sendchar.” If a character received on the serial line matches one of these characters,
it is immediately sent together with any awaiting characters to the TCP connection.
This is specially useful to minimize the response time for specific protocol characters
on the serial line (i.e. ETX, EOT etc.). Setting the first Sendchar to “00” disables the
recognition of
the characters.
Alternatively, the two characters can be interpreted as a sequence (see “Pack
Control” section).
Telnet Terminal Type
This parameter appears only if the terminal type option is enabled by setting
bit 6 in the disconnect mode. If set, the terminal name can be used for the Telnet
terminal type. Only one name can be entered.
If the terminal type option is enabled, VMSE also reacts to the EOR (end of record)
and binary options, which can be used for applications like terminal emulation to
IBM hosts.