5.8.4 Camera Support
LCom supports the “recording of camera snapshots” as described in the NTCIP
standard. All configuration settings for the snapshots (host name, port, user name,
password etc.) can be set in the “essSnapshotCameraTable” configuration dialog.
The picture is transferred from the camera via HTTP when the appropriate command
is sent to the LCom via NTCIP (a
“SET” command on
…
essSnapshotCameraTable.essSnapshotCameraEntry.essSnapshotCameraCommand.X)
. The image is
stored in the
“\temp\ftp” directory on the LCom; this directory is also the FTP server’s
“root” directory on the LCom.
While the picture is being captured/transferred from the camera, the
“…essSnapshotCameraCommand.X” OID will report “captureSnapshot”, and any
“SET” commands to the OID will be rejected with an SNMP “General Error”. When
the picture transfer to the LCom is
finished, the “…essSnapShotCameraCommand.X”
will report
“ready”. If the transfer was successful, the corresponding
“…essSnapshotCameraError.X” OID reports “none” – or “hardware” /
“insufficientMemory” if there was an error transferring the picture file.
The FTP server on the LCom allows “anonymous” read-only access to the “\temp\ftp”
directory in order to retrieve the camera picture from the LCom (user name:
“anonymous”, password: any).
Note: NTCIP camera support is independent of the MSSI camera support (see
below).
