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8.8 Message Channel
The asynchronous message channel is described in the GigE Vision
®
standard and of-
fers the possibility of event signaling. There is a timestamp (64 bits) for each announced
event, which contains the accurate time the event occurred.
Each event can be activated and deactivated separately.
8.8.1 EventGeneration
Event Description
GenICam™
ExposureStart Exposure started
ExposureEnd Exposure ended
FrameStart Acquisition of a frame started
FrameEnd Acquisition of a frame ended
Line0RisingEdge Rising edge detected on IO-Line 0
Line0FallingEdge Falling edge detected on IO-Line 0
Line1RisingEdge Rising edge detected on IO-Line 1
Line1FallingEdge Falling edge detected on IO-Line 1
Line2RisingEdge Rising edge detected on IO-Line 2
Line2FallingEdge Falling edge detected on IO-Line 2
Line3RisingEdge Rising edge detected on IO-Line 3
Line3FallingEdge Falling edge detected on IO-Line 3
Line4RisingEdge
(VCXG.I /
.XT only)
Rising edge detected on IO-Line 4
Line4FallingEdge Falling edge detected on IO-Line 4
Line5RisingEdge Rising edge detected on IO-Line 5
Line5FallingEdge Falling edge detected on IO-Line 5
Line6RisingEdge Rising edge detected on IO-Line 6
Line6FallingEdge Falling edge detected on IO-Line 6
Line7RisingEdge Rising edge detected on IO-Line 7
Line7FallingEdge Falling edge detected on IO-Line 7
Vendor-specic
EventError Error in event handling.
EventLost Occured event not analyzed.
TriggerReady t
notready
elapsed, camera is able to
process incoming trigger.
TriggerOverlapped Overlapped Mode detected.
TriggerSkipped Camera overtriggered.
FrameTransferSkipped Frame lost in the camera.
TransferBufferFull No free buffer in camera memory.
TransferBufferReady Buffer availabe in camera memory.
HeartBeatTimeout The device runs in heartbeat timeout.
PrimaryApplicationSwitch For systems where redundancy and fault re-
covery are required, it is often necessary for
a second application to take control over the
camera that is already under the control of
a primary application. In order to notify the
primary application that a switchover has oc-
curred, send this event before granting ac-
cess to new primary application.