IFBD-HE0708 BE07 User’s Manual
3-13
3.1.5.3.
TCP#9100 Forced Release
Release a specified host port number session from among connecting TCP#9100 sessions.
[
Execution procedures
]
As outlined in the following procedure, send a command from a PC to receive a response from the printer.
(1) Sending from PC to printer
Format
<FS> ‘3’ [
Host Port Number
] <NUL>
Hexadecimal
1C 33 [
Host Port Number
] 00
Parameter
Host Port Number
: The released host port number (2 byte data is specified in order of low-
order byte to high-order byte.)
Command example:
Host Port Number = 256 (0100 hex): 1C 33H 00H 01H 00H
Host Port Number = 12300 (300C hex): 1C 33H 0CH 30H 00H
Host Port Number = 65530 (FFFA hex): 1C 33H FAH FFH 00H
(2) Response from printer to PC
• If there was no response when the session was connecting: The printer disconnects after responding 00H
(*2)(*3).
• When releasing the session: The printer disconnects after responding 01H (*3).
(*2) It is mandatory to send this command from the same host device where the session was released that is
connecting to TCP#9100. For a different device, the printer responds 00H and a forced release will not be
executed.
(*3) This command does not confirm the PC's connection response.
The following shows an example communication chart.
Note: In the drawing, some portions such as the <ACK> packet have been omitted.
Print Data
SYN
SYN ACK
PC
(
同一端末
)
#22222
ACK
<FS>’3’[
Host Port Number] NUL
SYN
SYN ACK
FIN
FIN ACK
ACK
ACK
Print Data
FIN (Lost)
Printer
#9100
Host Port Number
01H
PC