Defining a PSF application node

An APPL statement defines a PSF application program node, called a logical unit (LU), within the network domain of a VTAM® supervisor services control point. This APPL statement also defines some of the communication capabilities of the application program. You need to also define an APPL statement for each PSF functional subsystem application (FSA) for each printer, and you must define at least one FSA per printer. The format in Figure 1 is used.

Figure 1. Sample APPL statement. Commonly found in SYS1.VTAMLST.

name          VBUILD TYPE=APPL
PSFFSA1       APPL   AUTH=ACQ,EAS=1,SONSCIP=YES

Note: Do not specify APPC=YES on the APPL statement.

APPL

Defines a PSF application program node and some of the communications capabilities of the application program.

Note: The name of the application program node is given (PSFFSA1 in this example) in the name field, unless the ACBNAME parameter is specified. If the ACBNAME parameter is specified, it defines the name of the application program node. For more information, see your publications for VTAM.

The application program node must also be specified in the Applid parameter in the Printer Inventory (see Applid) or the APPLID parameter in the PRINTDEV statement of the PSF startup procedure (see APPLID). The name of the APPL statement must be unique within the network.

AUTH: Allows PSF to use the SIMLOGON macroinstruction to initiate a session with the printer.
Do not specify AUTH=PPO on the APPL statement.
EAS: Specifies the number of concurrent sessions a PSF FSA can have with other logical units (LU–LU sessions). Specify EAS=1.
SONSCIP: Specifies that PSF is to receive UNBIND request/response units (RU) in its SCIP exit routine when PSF is acting as the primary end of a failing session.