100BASE-T1 SPY 12 Port
User Manual
31
Note:
In the Slave mode, the 100BASET1_SPY will answer to a request, that has been
sent by a Master, without logging the information through the selected Gigabit Port in
Output to.
The payload, length and ID for the slave response will be set through the
Fast Ethernet Port in 100BASET1_SPY.
Lin Version:
Allows to select LIN Version 1.3 or LIN Version 2.0. The difference
between both modes is the Checksum calculation method.
Bit Rate:
Allows to select the LIN Bit Rate. Available options: 1200bps, 2400bps,
4800bps, 9600bps, 19200bps.
Note:
The device which is connected to this port must have the same Bit Rate and
Version.
3.4.5.1
LIN Master Mode
In the LIN Master Mode, the 100BASET1_SPY LIN port acts as the Master in the LIN
protocol communication. In this case, a specific Ethernet frame received on GB Port A
will be sent through the LIN port. The following table shows the structure of the
Ethernet LIN Master frame used for this purpose:
Field Name
N
º
of Bytes
Value
Destination Mac Address
6
FF:FF:FF:FF:FF:FF
Source Mac Address
6
It depends on the source Ethernet Adapter
Ethertype
2
0x2084
Direction
1
0x00 (TX)
Port Number
1
0x01
LIN ID
1
LIN ID without parity protection
Length
1
In bytes
LIN Payload
1 to 8
It is length depends on the Length field
Table 3-5: Contents of LIN Master Frame
Note:
In this mode, the devices connected to the 100BASET1_SPY LIN port must be
configured as Slave, with the same Bit rate and LIN version.
Note:
If the Length field is set to 0x00, the frame will be sent without data,
corresponding in this case with a LIN Master Request, according to LIN specification.
Note:
The user must assure that the Ethernet data rate used for LIN Transmission
functionality is lower than the configured LIN Bit Rate on the LIN options. Otherwise,
the LIN frames will be dropped.
Warning:
LIN MASTER mode is not working on the current release.
