Computer Expressions 40CG Manual do Utilizador descarregar pdf (Página 50)

Computer Gateway User Manual 4-14 5/96

4.2.3

4.2.3 Link Failure Message

This message is sent by either CG or host processor to indicate failure of one of the links in

a dual-Bisynch pair. It is used as a trigger for switch-over to single-link communication.

Header information: Word 1—Transaction Code = 32

Word 2—Number of Words = 1

Word 5—CG Identifier = 5

Message format: Word 1—not used

Use information: On detection of a failure of its input link, the CG or the host sends

this message on its output link, immediately followed by EOT.

Both processors then revert to single-link communication

(requiring a line bid before each transmission).

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