STCOM - Set Inter-Terminal Communication

Use the STCOM macro instruction to specify whether a terminal will accept messages from other terminals or low priority messages from the system operator. High priority operator messages are always sent to the terminal.

The STCOM macro instruction can be used only in a time sharing environment. It is ignored if TSO/E is not active when the macro instruction is issued.

Figure 1 shows the format of the STCOM macro instruction.

Figure 1. The STCOM macro instruction

[symbol]     STCOM       [YES]
                         [NO ]

YES | NO

YES: indicates that the terminal will accept messages from other terminals. If neither YES nor NO is specified, YES is assumed.
NO: indicates that the terminal will not accept messages from other terminals.

When control is returned to the user, register 15 contains one of the following return codes:

Table 1. Return codes from STCOM
Return code dec(Hex)	Meaning
0(0)	Successful.
4(4)	An incorrect parameter was specified.