QuercusVL Programming Manual
●
SessionId: session identifier obtained at the last valid “Login”.
●
Action (Act): action :
○
0: modify the existing detector.
○
1: add a new detector.
PeviousId: if an existing detector is modified, this parameter must indicate the
old identifier (can have been modified). On the other hand, if a new detector is
added, it must be set to -1.
●
Detector: detector description, using a structure
StoppedCarDetector
.
Answer
ACK/NAK
If a NAK message is received as an answer, its subcode field will give more detailed
information about why the query has failed. See 4.8.2. NAK.
4.9.30. GetTrafficLightsCount
Obtains the number of traffic lights in the configuration system.
Query
●
Type: 167
●
Message Data:
●
SessionId: session identifier obtained at the last valid “Login”.
Answer
●
Type: 189
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Message Data:
Quercus Technologies
178
4
SessionId
2
Act
4
SessionId
4
PreviousId
124
Detector