ESD electronic CAN-CBM-PLC/331-1, Руководство по оборудованию

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Commands and Parameters
esd Protocol for CAN Modules Rev. 3.2 3 - 22
3.4 Process RxIds
Depending on the module type one or more Rx identifiers are allocated to the module on which it is able to
receive data to the CAN (set RxIds).
The new Rx identifier replaces the default identifier adjusted by the coding switches immediately after it
had been received by the module. If the new Rx identifier should remain after a RESET or a power-down,
it has to be filed into the local EEPROM by the command 'store parameter'.
Apart from this it is possible to make the module transmit a reply onto the CAN by the Tx identifier CTxId
(request RxIds) about the Rx identifiers actually used by the module.
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
Request: $03
$00...n
Always
allocate with
$00
Selected
module no.
$01...$FF
CTxId
$0000...$07FF
Set: $83
RxId
$0000...$07FF
Table 3.4.1:
Bytes of the command set/request RxIds
Command... By the command $03 the actual Rx identifiers are requested by the module. The
module transmits the information on the identifier 'CTxId' entered in byte 5 and byte
6 after this request.
By the command $83 new Rx identifiers for the transmission of I/O data are
allocated to the module. The new Rx identifier are interchanged by byte 5 and byte
6.
Sub command... By the sub command it is selected which Rx identifier should be interchanged.
Depending on the module type a different number of Rx identifiers can be set.