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Break
CCM Initialization
•
Break detection is normally required under the following conditions:
1.
The generation of the break character as a result of an abnormal
circuit condition or failure, commonly called an open line. There-
fore, the processor should be notified immediately.
The operational word may be set to recognize a specified number of
sequential break characters, up to four if desired. The resulting
coordination message causes termination of the Read command to
that buffer.
2. When the Break of a certain duration is used for specific signalling
purposes, a coordination message is generated as a result of
operational word recognition.
The operational word is set to recognize the specific number of
Break characters which create the particular signal.
2-15
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