An IBM 3274 CU contains up to 32 devices, the HSM emulation supports only device, 0. The SNA addresses are:
HSM PU Address = 0;
HSM LU Address = 2 (addresses 0 and 1 are reserved).
The SDLC Station Address is selectable, the default value is X'C1. Addresses X'00 and X'FF are reserved, all other CU address values are valid (i.e., X'01 to X'FE or 1 to 254).
The HSM does not implement the NMVT Alert and RTM commands.
Because the SLU in the HSM is the software, the PLU has the responsibility of initiating the logon.