Dynapro Technologies Dynapro ET TCS, Руководство разработчика приложений

Страница: 259 / 337

8-6
5HTXHVW(UURU6WDWXV&RPPDQG^)5(6`5HPRWH
The Request Error Status command allows the host to poll the TCS to determine whether a new
error has occurred. This command is of use only when the Error Interrupt Mode is reset. When
the Error Interrupt Mode is set, the TCS does not hold any error status reports and will have
already sent out an asynchronous error interrupt, reporting the error to the host. Therefore, there
will be no new error for this command to report.
When the Error Interrupt Mode is reset, the TCS holds any new error until the host polls for it
using this command. Subsequent errors that occur between the time that the new error was
detected and the host polls for the error status report are ignored by this command, although they
continue to be reported within the Operational Status Window in the Setup Screen.
Each time the host polls for an error status report, the TCS responds with a report (which may
indicate that no new error has occurred). Polling for the error status report automatically clears
the error condition being held by the TCS and instructs it to resume looking for the next new
error. The error condition is also cleared upon power-up or reset (however, a new error may be
detected during the automatic self-tests, in which case it will be held as described above).
The conditions that can cause an error, the report the TCS displays in the Operational Status
Window, and the error report sent to the host are described in Chapter 9. (check)
23(5$72586$*(
None. (This is a remote command only.)
+26786$*(
<ESC>[>11n
The status report returned to the Host in response to the above command has the following
format:
<ESC>[>11;<Pe>n
<Pe> is a selective parameter indicating the error type. If <Pe> is 0, no errors.
If <Pe> is 1, RAM test error
If <Pe> is 2, Nonvolatile memory checksum error
If <Pe> is 3, ROM checksum error
If <Pe> is 4, Touch panel error
If <Pe> is 5, Communications framing error
If <Pe> is 6, Communications overrun error
If <Pe> is 7, Communications parity error
If <Pe> is 8, Communications buffer overflow error
If <Pe> is 9, Expansion memory full error
If <Pe> is 10, Expansion memory uninitialized error