Jetter JC-120MC, Руководство пользователя

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552 Jetter AG
10 Programming
CAN message box - Description of registers for indirect access
To get indirect access to message boxes of the CAN-Prim interface always
select the message box using R 200010502 Message Box Number .
To allow compatibility with previous OS versions the registers for indirect
access are still supported. Always use the registers for direct access when
programming the CAN-Prim interface.
CAN-Prim command register
R 200010501 is used to transfer certain commands to the CAN-Prim interface.
CAN-Prim interface - Commands
1
Enable the message box
The selected message box in R 200010502 is enabled. When enabling the
message box, the system checks whether the CAN-ID of the message box
has been reserved by the system bus or not.
Result:
Bit 0 = 1 in R 200010510
2 Disable the message box
The selected message box in R 200010502 is disabled.
Result:
Bit 0 = 0 in R 200010510
3 Send a CAN message
A CAN message is sent containing the data of the selected message box.
4 Clear the NEW DAT bit
This command is for clearing bit 1 NEW-DAT in R 200010510 which
enables the selected message box to receive CAN messages again.
Result:
Bit 1 = 0 in R 200010510
5 Clear the OVERRUN bit
Clears bit 2 OVERRUN in R 200010510 of the selected message box.
Result:
Bit 2 = 0 in R 200010510
6 Clear the sending error bit
Clears bit 3 Transmit error in R 200010510 of the selected message box.
Result:
Bit 3 = 0 in R 200010510
7 Clear the FIFO buffer
This command is for clearing all entries in the FIFO buffer.
Result:
R 200010503 = 0
Indirect access
R 200010501