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

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Examples
esd Protocol for CAN Modules Rev. 3.2 4 - 3
4.2 Restoring the Default Parameters
This example should show how a module whose default parameters have been changed during an
initialisation is put back into the original condition.
There are various ways to reactivate the default parameters.
4.2.1 ...if the actual module no. is unknown:
If only on this
esd
-CAN module the default parameters should be restored, you have to proceed as follows:
The coding switches of the module have to be set to $00 and a RESET has to be triggered.
Because the module no. is unknown, the RESET is triggered by interrupting the supply voltage of the
module or the voltage at the EMERGENCY-STOP outputs or by triggering a global module RESET on
the CAN (RESET all modules).
This global RESET resets all modules. But the default parameters are only restored on those modules
whose coding switches are adjusted to $00.
CAN Id
Byte 1
(command)
Byte 2
(sub command)
Byte 3
(always $00)
Byte 4
(RESET type)
Byte 5 Byte 6
$700
=INIT Id
$FF $00 $00
$00
(global)
$AA $AA
Table 4.2.1:
RESET of all
esd
modules of the CAN
The bytes 7 and 8 are not needed for this command.
If on all
esd
-CAN modules on the CAN the default parameters should be reactivated, the global command
'default RESET' is given to the bus:
CAN Id
Byte 1
(command)
Byte 2
(sub command)
Byte 3
(always $00)
Byte 4
(RESET type)
Byte 5 Byte 6
$700
=INIT Id
$FF $03 $00
$00
(global)
$AA $AA
Table 4.2.2:
Default RESET of all
esd
modules of the CAN
The bytes 7 and 8 are not needed for this command.
After this RESET the module starts again with the default parameters. By coding switches the desired
identifier can be determined again.