6100 BSC Programming Manual

Writing Applications that Use 6100 BSC
SEND WACK. This request sends a WACK reply to the remote
station, then waits for an ENQ response. WACK indicates a
temporary inability to receive data, as described in Section 1 of
this book. It makes sense only in READ state, i.e., if this is
the receiving station during a data transfer. When the request
completes, the line is in READ state, ready for a READ to be
issued.
The request buffer format is:
Function := 67
Modifier := 6
Request ID := A unique value from 1 to 32767,
application-determined
Text Out := Doesn't matter
Text In := Doesn't matter
Text := None
The response buffer format is:
Response := 67
Status := 0 if the operation succeeded, otherwise
a code for the error that occurred
Request ID := The same as in the request
Detail := A status detail code, containing more
description of request status
Text In := 0
Text := None
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