TN3270 Server Manual

ITI Communication Protocol
TN3270 Server Manual—424097-001
6-11
SETPARAM Function 3 Procedure
BREAK Message Considerations
Whenever the Guardian TN3270 Server detects the input of a PA1 key (simulated
BREAK key) from a 3270 terminal configured for ITI protocol, a BREAK message is
sent to the owner of the break for that terminal.
The six parameters of the BREAK message are:
1. -20, which identifies the BREAK message
2. The logical device number of the I/O operations process
3. The system number of the I/O operations process
4. The most significant word of the BREAK tag
5. The least significant word of the BREAK tag
6. 0 (zero)