SP-5000M-GE2 / SP-5000C-GE2
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5.1.1.2 PTP (IEEE 1588-2008: Precision Time Protocol
）
Table 3. Specifications
Equipped functions
Only slave
Master function is not equipped
Used Transport
Multicast UDP datagram
But, Delay_Req and
Delay_Resp are Unicast UDP
datagram
In IEEE 1588, various transports
including Ether Frame are defined. In
GigE Vision 2.0, it is defined to use
UDP datagram.
Destination Port
number
Event message: 319
Sync,
Delay_Req,
Pdelay_Req,
Pdelay_Resp
General mesage: 320
Announce, Follow_Up, Delay_Resp,
Pdelay_Resp, Management, Signaling
Multicast address
224.0.1.129
Synchronized item
Time only
Frequency synchronization is not
equipped
PTP Time Data
(Comply with IEEE
1588)
bit length
80 bit
Time with 1 ns unit increment
starting at 00:00:00 on 1/1/1970
Camera Time Stamp
bit length
64 bit
(Note2)
At PTP synchronization, LSB 64 bit of
PTP time data
At PTP non-synchronization, 1 ns unit
increment at starting on any time
(Note 1)
Applicable PTP
Message
Announce message
Receiving only
Sync message
Receiving only
Follow_Up message
Receiving only (used if the master is
2 step clock)
Delay_Req message
Sending only
Delay_Resp message
Receiving only
GigE Vision proper
regulation
Timestamp Tick Frequency register value is fixed at 1,000,000,000
(1 GHz). (Note 3)
While PTP synchronizing operation, Timestamp Reset function is
disabled and if the reset is required, GEV_STATUS_WRITE_PROTECT
status code is returned.
Note1: If there is IEEE 1588 master clock in the network, the camera time stamp is
synchronized at the master clock.
If there is no IEEE 1588 master clock in the network, the camera time stamp
operates by the free running of the internal clock at starting on the power being ON.
Note2: In GenICam standard, 64-bit integer is handled as signed value, thus only 63 bits are
available through GenICam interface.
Note3: As 1 GHz clock is not actually operated, the time stamp is incremented by 8
(1 GHz/125 MHz) on every 1 clock of actual frequency.
5
.1.1.3 Manifest
SP-5000-GE2 is equipped with Manifest. Both GenICam Version 1.x and Version 2.0 are applied by
selecting the entry.
