The RUSIZES operand in the following example defines a 256-byte maximum secondary logical unit RU send size and a 1024-byte maximum primary logical unit RU send size. If the maximum primary logical unit RU size is 0, TSO/VTAM defaults to 1024 bytes.

name     MODEENT FMPROF=X'03',
               TSPROF=X'03',
               PRIPROT=X'B1',
               SECPROT=X'90',
               COMPROT=X'3080',
               RUSIZES=X'8587',
               PSERVIC=X'…1'