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Printer sessions are used by host applications that can print to 3287 printers using LU types 1 or 3. You control printer sessions in much the same way as you control display sessions.
You do not need a printer session to print the contents of a 3270 display on a local printer. To do that, press PRINT (default keystroke Ctrl + P) during 3270 emulation.
To control printer sessions, choose Printer Sessions from the Control menu. The dialog box shown in Control Printer Sessions Dialog Box, is displayed.
The following list describes the information contained in the Control Printer Sessions dialog box.
The unique identifier for each session. For instructions for changing this option, see Customizing Printer Sessions.
The name of the host session record in the configuration file.
The host symbolic domain name of the TCP/IP host used by the session. If the session is disabled, this field is blank. This field may be truncated on the right, if necessary.
This name may correspond to a host computer that supports direct TN3270 access over TCP/IP, or to a communications product (such as the main SNAP-IX product) providing the TN server function on another computer. For a TN server, the name shown is the domain name or Internet address of the computer where the TN server software is running.
If the System Administrator has given you permission to override the configured domain name, you can use the command line to specify the name of the host to use for a given session. For more information about overriding the configured host domain name, see Starting the 3270 Emulation Program.
Identifies the local LU assigned to the session. If the session is disabled, the name of the configured LU or LU pool is shown (or blank if no LU name is configured). If the session is active, the name shown is the name of the actual LU used by the session. If TN3270 protocols, rather than TN3270E protocols, are being used, the name of the configured LU or LU pool is shown because the actual LU name is not available.
Session number for the associated display session. This field is blank if no display session has been associated.
Indicates whether the session is communicating with the local node. To use the session for printer emulation, you must enable it. For more information, see Enabling and Disabling a Printer Session. The following list describes the printer session status messages.
Disabled
The session is not communicating with TCP/IP. To enable this session, you must choose < Change Status>.
Enabled nnn
The session is communicating with TCP/IP but not with a host control program. The variable
nnnis the communications check code, displayed as
-+z_nnnon the status line of the 3270 session. For explanations of these codes, see Status Line Information. The code indicates why the 3270 emulation program has not been able to contact the host control program.
The status may also appear as
Enabledwithout a communications check code for a few seconds before it changes to
SSCP.
SSCP
The session is activated and communicating with a host control program.
NVT
The session is communicating with the host TN3270 program using data messages in Network Virtual Terminal (NVT) format. This format uses no header and ends all ASCII lines with a carriage return and line feed (CR LF).
TN3270
The session is communicating with the host TN3270 program using data messages in TN3270 format. This format uses no header, LU type 2 data, and TELNET END-OF-RECORD (EOR).
TN3270E
The session is communicating with the host TN3270 program using data messages in TN3270E format. This format uses a 5-byte header, various data types, and TELNET END-OF-RECORD (EOR).
TN3287
Session is communicating with the host TN3270 program using data messages in TN3287 format. This format uses one zero-byte prefix for LU type 1 or LU type 3 data and TELNET END-OF-RECORD (EOR).
Host_application_name
The 3270 emulation program is communicating with the named host application, but printing has not yet started. This name is shown if it is available from the BIND image exchanged during session activation. If the BIND image is not available, either the value
TN3270or
TN3270Eis shown.
Printing
The 3270 emulation program is communicating with a host application, and printing is in progress.
The Control Printer Sessions dialog box provides the following push buttons:
Choose this to enable a disabled session or to disable an enabled session. (For more information, see Enabling and Disabling a Printer Session.)
Choose this to exit the Control Printer Sessions dialog box.
To conduct printer emulation, you must enable a printer session. To toggle a session's status between enabled and disabled, use the following procedure:
Once enabled, a printer session is available to direct 3270 output either to a printer attached to your Solaris computer or to a file on the Solaris computer. No display function is associated with printer sessions.
For printer sessions associated with display sessions, the 3270 emulation program automatically disables the printer session unless the display session is active. If you attempt to enable a printer session associated with a display session when the display session is not active, the 3270 emulation program displays an error message that indicates that the printer session is not enabled.
When the host sends data for a printer session, it can specify the maximum number of characters to be printed on a line (the 'maximum print position'). The default value is 132; the 3270 emulation program accepts any value from the host up to 132, but will reject larger values.
If you need to accept larger values specified by the host, or to restrict
the host to values below 132, you must set the environment variable
Contact your System Administrator if you are not sure how to set this environment variable.
When the host sends data for a LU1 printer session, it can mark sections of the data as 'transparent data' (using the SCS code 0x35). Normally, transparent data is sent to the printer without being translated from EBCDIC to ASCII.
If you need to translate transparent data from EBCDIC to ASCII, you
must set the environment variable
Contact your System Administrator if you are not sure how to set this environment variable.
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