6100 ADCCP Programming Manual

(7) STOP OPERATION
Requests and Responses
6–18 069225 Tandem Computers Incorporated
(7) STOP OPERATION The STOP OPERATION request and response are used to halt line activity and
requests. The Text In field of the STOP OPERATION request and response is defined
differently for ADCCP/X21.
Request for ADCCP The STOP OPERATION request immediately stops all line activity, aborting all
requests in progress. After the application has sent this request to the ADCCP
protocol module, only the following requests are accepted from applications:
(1) SET CONFIGURATION
(3) START TRACE
(4) STOP TRACE
(5) FETCH STATISTICS
(6) START OPERATION
This request is an extreme method of discontinuing work on the line. For information
on other means of shutting down a link, review “Shutting Down the Link” in Section
4, “Writing Applications That Use ADCCP,” and the information on starting and
stopping lines in the CP6100 I/O Process Programming Manual.
The request buffer format is:
Function := 7
Modifier := 0
Request ID := A unique value from 1 to 32767,
determined by the application.
Text Out := 0
Text In := 0
Text None
Response for ADCCP The STOP OPERATION response is the expected answer to the STOP OPERATION
request. It reports that the line is now unavailable for I/O requests.
For a list of the status codes and their definitions, see “Status Code Definitions” at the
end of this section.
The response buffer format for ADCCP is:
Response := 7
Status := 0
Request ID := The same as in the request
Text Out := 0
Text In := 0
Text None