System Request/ Attention Key - IBM 5291 Operator's Manual

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System Request/ Attention Key
Sys
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Attn
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Use of the Sys Req/ Attn key can vary depending on the system.
With most systems, the Sys Req/ Attn key can be used to:
• Initiate Sign-on to the system
• Initiate and select an alternate job
• Temporarily stop the present display station activity and allow
selection of a new activity
• Notify the system that the display station is ready to select a
new program or activity
• Request that the keyboard be unlocked (after normal error
recovery action has failed) so that data entry can be continued
To use the system request function:
1. Press and hold an
OE]
(Uppershift) key.
2. Press the
3.
Press the key.
To cancel the Sys Req/ Attn key function, press the Error Reset
key. Pressing any other key before pressing the Enter/Rec Adv
key causes an error. However, if your display station is
connected to a 5251 Model 2 or 12, data characters are allowed
before pressing the Enter key.
To use the Attention function, press the