CAN通讯程序例子
定义变量程序:AR
fb_GetMsg_0x1F9 : FB_CAN_RXMSG; (* 接收CAN总线上的消息 *)
tB_GetMsg_0x1F9 : ARRAY OF BYTE;
fb_SetMsg_0x200 : FB_CAN_TXMSG; (* 发送到CAN总线的消息 *)
tB_SetMsg_0x200 : ARRAY OF BYTE;
b_CAN_Get_0 : BOOL ;
b_CAN_Get_1 : BOOL ;
b_CAN_Get_2 : BOOL ;
b_CAN_Get_3 : BOOL ;
u8_CAN_Get_0 : BYTE ;
b_CAN_Set_0 : BOOL ;
b_CAN_Set_1 : BOOL ;
b_CAN_Set_2 : BOOL ;
b_CAN_Set_3 : BOOL ;
u8_CAN_Set_0 : BYTE ;
END_VAR
主程序:
(* CAN通信:接收*)
fb_GetMsg_0x1F9( EN := TRUE,
Bus_Num := X_CAN_BUS_01,
FORMAT := CAN_11Bit,
ID := 16#1F9,
BUF_Lgh := 0,
DATA => tB_GetMsg_0x1F9);
(*解析接收到的数据*)
b_CAN_Get_0 :=tB_GetMsg_0x1F9.0;(*位*)
b_CAN_Get_1 :=tB_GetMsg_0x1F9.1;(*位*)
b_CAN_Get_2 :=tB_GetMsg_0x1F9.2;(*位*)
b_CAN_Get_3 :=tB_GetMsg_0x1F9.3;(*位*)
u8_CAN_Get_0 :=tB_GetMsg_0x1F9;(*字节*)
(* CAN通信:发送*)
tB_SetMsg_0x200.0 := b_CAN_Set_0 ;(*位*)
tB_SetMsg_0x200.1 := b_CAN_Set_1 ;(*位*)
tB_SetMsg_0x200.2 := b_CAN_Set_2 ;(*位*)
tB_SetMsg_0x200.3 := b_CAN_Set_3 ;(*位*)
tB_SetMsg_0x200 := u8_CAN_Set_0 ;(*字节*)
fb_SetMsg_0x200(EN := TRUE,
Bus_Num := X_CAN_BUS_01,
FORMAT := CAN_11Bit,
ID := 16#200,
DLC := 8,
DATA := tB_SetMsg_0x200,
BUF_Lgh := 1);
我是看不懂,新手一个,谁看懂了回复一下
贴完整的工程上来啊
没有这样传的资料 学习学习
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