Lenze ETC Motion Control Manual de usuario descargar pdf (Pagina 412)

100

101

PLC programming

Library

CAN functions (only ETCxM)

8.8

8.8.6

412

EDSTCXN EN 2.0

8.8.6.5 ClearCanMsg (only ETCxM)

FUNCTION ClearCanMsg: BOOL

VAR_INPUT

handle_pr : DINT; (* Handle on the management structure *)

END_VAR

FUNCTION

This function can be used to delete the reception FIFO (see function

DefineCanMsg()). The return value of the function is of no consequence.

handle_pr : DINT;

handle_pr = DefineCanMsg(1, 1014, 1114, 32);

ClearCanMsg(handle_pr);

8.8.6.6 ReadCanMsg (only ETCxM)

FUNCTION ReadCanMsg: INT

VAR_INPUT

handle_pr : DINT; (* Handle on the management structure *)

dest_pr : DINT; (* Address to the data structure *)

END_VAR

With this function a CAN message can be read from the reception buffer. The

reception buffer is implemented as FIFO. The structure for reception data is

as follows:

TYPE CAN_MSG_TR

STRUCT

cobid_w : WORD;

size_b : BYTE;

rtr_bit : BOOL;

data_ab : ARRAY [0..7] OF BYTE;

END_STRUCT

END_TYPE

The variable dest_pr must always be given the address of a variable of type

CAN_MSG_TR (see example). This function will provide an immediate

return in any case. The meaning of the return values can be found in the

following table.

Return value Meaning

−2 Invalid handle

0 No new message in FIFO

1 New message available, no further message in FIFO

2 New message available and further messages in FIFO

Declaration

Description

Example

Declaration

Description

1 2 ... 407 408 409 410 411 412 413 414 415 416 417 ... 427 428

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ama 11 Jan 2025 | 19:35:39

rasha

Lenze ETC Motion Control Manual de usuario Pagina 412

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