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Commands and Parameters
3. Description of the Commands and Parameters
3.1 Configuration Reply
The transmission is called by transmitting a 'request configuration' command. The identifier on which the
module should transmit the information on the CAN is reported to it by byte 5 and 6.
Contrary to the other commands only parameters are called with this command.
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6
Function Command Sub command Not used Module no. Parameter 1 Parameter 2
Value $00 $00...$05
Always
write
$00
Selected
module no.
$01...$FF
CTxId
$0000...$07FF
Table 3.1.1: Bytes of the command 'request configuration'
Explanation of the Bytes Transmitted to the Module:
Command... The command 'request configuration' requests the transmission of the actual
parameters of the module.
Sub command... The sub command determines the configuration bytes which should reply:
Sub
command
$00
$01
$02
$03
$04
$05
Reply of the parameters
Module type
Active switch
ASCII Id
Software rev.
reserved
Serial number
Table 3.1.2: Selection of the configuration reply by sub command
Parameter 1 and 2... With these parameters it is reported to the module to which CAN Id. it should
transmit the requested reply.
The module does only transmit once on this identifier. The identifier is not stored on
the module.
If another transmission is desired another INIT Id with the corresponding
parameters has to be transmitted to the module.
esd Protocol for CAN Modules Rev. 3.2 3 - 1