1200通讯代码

菜鸟求大侠帮我给这段代码加个注释~~感激不尽TT
#TCon_Param.CONNECTioN_TYPE:=#TCon_Param.CONNECTION_TYPE;
#TCon_Param.REM_STADDR_LEN:=4;
#TCon_Param.REM_STADDR[1]:=#REM_IP1;
#TCon_Param.REM_STADDR[2]:=#REM_IP2;
#TCon_Param.REM_STADDR[3]:=#REM_IP3;
#TCon_Param.REM_STADDR[4]:=#REM_IP4;
#TCon_Param.LOCAL_TSAP_ID_LEN:=2;
#TCon_Param.REM_TSAP_ID_LEN:=0;
#poRT:=#port;
#TCon_Param.LOCAL_TSAP_ID[1]:=#port.B1;
#TCon_Param.LOCAL_TSAP_ID[2]:=#port.B0;
#TCon_Param.ID:=#ID;

//TCON
#TCON_InstanCE(REQ:="Communication_Contrl".Com_REQ,
ID:=#TCon_Param.ID,
DONE=>#TCon_Done,
BUSY=>#TCon_Busy,
ERROR=>#TCon_Error,
STATUS=>#TCon_Status,
CONNECT:=#TCon_Param);

//TRCV
#TRCV_Instance(EN_R:=TRUE,
ID:=#TCon_Param.ID,
LEN:=0,
NDR=>#TRcv_Done,
BUSY=>#TRcv_Busy,
ERROR=>#TRcv_Error,
STATUS=>#TRcv_Status,
RCVD_LEN=>#RCVD_LEN,
DATA:=#ReceiveStructure);

//TSEND
#TSEND_Instance(REQ:=#TSend_Req,
ID:=#TCon_Param.ID,
LEN:=0,
DONE=>#TSend_Done,
BUSY=>#TSend_Busy,
ERROR=>#TSend_Error,
STATUS=>#TSend_Status,
DATA:=#SendStructure);

//SchrittketteCommunication
CASE#Step_CommunicationOF

//Connectionestablished?
0:IF#TCon_DoneTHEN
#Step_Communication:=1;
END_IF;;

//Datareceived?
1:IF#TRcv_DoneTHEN
#Step_Communication:=2;
END_IF;

//sendingdata
2:#TSend_Req:=true;
#Step_Communication:=3;

//datasent?
3:IF#TSend_DoneTHEN
#Step_Communication:=4;
END_IF;

//reseTParam.
4:#TSend_Req:=false;
#Step_Communication:=1;

END_CASE;

最佳答案

注释没办法告诉你，因为有临时或静态变量的存在，只能根据程序分析，判断每个变量所存储的数据进而得出它的含义。并且你的程序不是完整的。
你要先学习SCL方面的知识。调用的块是用于集成PROFINET接口开放式用户以太网通讯做数据交换。

提问者对于答案的评价：
下了点SCL的资料，我学学，3Q

专家置评

已阅，最佳答案正确。