|LU1-or-LU3||The values LU1 and SCS set the default printer mode to SNA Character Stream (SNA LU1 printing). The values LU3 and 3270 set it to 3270 datastream (SNA LU3) printing.|
|Default:||The default printer mode is 3270 Datastream.|
TN3270E clients may support either or both of two types of printer data streams: SCS (LU1) and 3270 (LU3). The type of printer required depends on the migrated mainframe application.
During TN3270E negotiation a printer session will identify which print mode or modes it supports. If an application sends output to a printer session that supports both modes, and CAS cannot determine which printer type the application expects, then the value of default-printer-mode is consulted to determine how to identify the data to the client.