diff options
| author | Ralf Nolden <nolden@kde.org> | 2015-11-05 15:06:41 +0100 |
|---|---|---|
| committer | Karsten Heimrich <karsten.heimrich@theqtcompany.com> | 2015-11-05 19:10:30 +0000 |
| commit | d0deba1cfae95d310dfa72a0d73919e123b307ee (patch) | |
| tree | 0a313f816f93719e9a6398be505db61ce838ed21 /src/serialbus/qmodbuspdu.cpp | |
| parent | 39eaed67b3cc98e44d9cdc3057da77e640da1c9b (diff) | |
Add NegativeAcknowledge (7) missing exception code
Add NegativeAcknowledge to the enum of known exception codes. The code
is not included in the current modbus spec but is widely used in devices
that use it as a response for programming commands (such as Schneider
Electric). The according negative acknowledge message counter is also
already present which accompanies this exception code.
Change-Id: Ida86914bfe073601e2a286d92978f547e3ae7b60
Reviewed-by: Karsten Heimrich <karsten.heimrich@theqtcompany.com>
Diffstat (limited to 'src/serialbus/qmodbuspdu.cpp')
| -rw-r--r-- | src/serialbus/qmodbuspdu.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/serialbus/qmodbuspdu.cpp b/src/serialbus/qmodbuspdu.cpp index 0fadbf8..059a07c 100644 --- a/src/serialbus/qmodbuspdu.cpp +++ b/src/serialbus/qmodbuspdu.cpp @@ -120,8 +120,13 @@ static quint8 minimumDataSize(QModbusPdu::FunctionCode code, Type type) was attempting to perform the requested action. \value Acknowledge Specialized use in conjunction with programming commands. - \value ServerDeviceBusy The slave is engaged in processing a long–duration + \value ServerDeviceBusy The slave is engaged in processing a long duration program command. + \value NegativeAcknowledge The server cannot perform the program + function received in the query. This + code is returned for an unsuccessful + programming request. The client should request + diagnostic or error information from the server. \value MemoryParityError Indicates that the extended file area failed to pass a consistency check. Used in conjunction with function codes 20 and 21. The exception code does |