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85201A_RK5C_User Manual_02-2017_ENG
The Switch delay parameter specifies the length of two delay periods of equal length, which are necessary to avoid
operating the network with different bit rates.
After “Switch delay” has elapsed the first time after service indication, the slave device stops communicating on the
bus.
After “Switch delay” has elapsed one more time, the slave device resume the communication on the bus using the new
active bit rate.
LSS store configuration
By means of this service, the LSS master device requests the LSS slave device to store the configured local layer
settings (node-ID and bit rate) to non-volatile memory. On execution of this command the pending node-ID and bit rate are
copied to the persistent node-ID and bit rate.
The LSS master sends this message to store the LSS configuration (the slave sends the response message):
COB-ID
Rx/Tx
DLC
Data
D0
D1
D2
D3
D4
D5
D6
D7
7E5h
Rx
8
17h
00h
00h
00h
00h
00h
00h
00h
7E4h
Tx
8
17h
Error
code
00h
00h
00h
00h
00h
00h
Figure 16 - LSS store configuration message
where Error code: 00h (Protocol successfully completed) or 02h (Storage media access error).
3.3 LSS INQUIRY SERVICES
LSS inquire node-ID
By means of this service, the LSS master device inquires the active node-ID of the LSS slave device that is in LSS
configuration state. The LSS slave device responds indicating his active node-ID.
The LSS master sends this message to inquire the node-ID (the slave sends the response message):
COB-ID
Rx/Tx
DLC
Data
D0
D1
D2
D3
D4
D5
D6
D7
7E5h
Rx
8
5Eh
00h
00h
00h
00h
00h
00h
00h
7E4h
Tx
8
5Eh
Node
ID
00h
00h
00h
00h
00h
00h
Figure 17 - LSS inquire node-ID message
where Node-ID is the LSS slave’s active node-ID.
LSS inquire LSS address
By means of this service, the LSS master device inquires the LSS address of the LSS slave device. The LSS slave
device responds indicating his LSS address.
The LSS master sends this message to inquire the Vendor-ID (the slave sends the response message):
COB-ID
Rx/Tx
DLC
Data
D0
D1
D2
D3
D4
D5
D6
D7
7E5h
Rx
8
5Ah
00h
00h
00h
00h
00h
00h
00h
7E4h
Tx
8
5Ah
Vendor ID
00h
00h
00h
Figure 18 - LSS inquire identity Vendor-ID message
where Vendor-ID is the LSS slave’s identity Vendor-ID (Intel format byte ordering).