220: Alert Function (Sna Only) (Configuration Support C); 301: Control Unit Number (Bsc Only); 302: Sdlc Control Unit Address - IBM 3270 Manual

220: Alert Function (SNA Only) (Configuration Support C)
Enter a 0, 1, 2, or 3 as follows:
0 - No alert function wanted.
1 - Alert function without operator-generated alert message capability.
2 - Alert function with operator-generated alert message capability from
port 0 only.*
3 - Alert function with operator-generated alert message capability from
all ports.*
* Operator-generated alert messages cannot be issued from a 3277 or a
distributed function terminal.
301: Control Unit Number (BSC Only)
Enter the 2-digit decimal control unit number. Obtain the polling address
(in hexadecimal) for this control unit from the system programmer at the
host system site. Use Figure 3-8 to convert this address to the decimal
control unit number.
Notes:
1. Because it is standard practice to send the address twice, the system
programmer may give you a "double address," for example, 4040. You
would use only the first two digits, that is, 40.
2. If your 3274 has an integrated modem feature (5640, 5740, 5840, or 5842)
installed, see Appendix G for proper setting of the Modem Address
switches.
302: SDLC Control Unit Address
3-54
Enter the 2-character hexadecimal SDLC control unit address; this
information can be obtained from the system programmer at the host system
location. The host system, if using NCP, specifies this address in the
3704/3705 PU macro. For loop operation, this address must match the loop
adapter station address.
Note: If your 3274 has an integrated modem feature (5640, 5740, 5840, or
5842) installed, see Appendix G for proper setting of the Modem Address
switches.
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