
谢邀。
前提声明,没做过 Prodave,以下来自谷歌到的部分说明文档。
● LoadConnection_ex6
The basic LoadConnection_ex6 function initializes the adapter, checks if the
driver is loaded, initializes the addresses that have been assigned parameters and
activates the selected interface
LoadConnection_ex6 is used to set up a transport connection via MPI/PB- or IP
addresses (TCP/IP protocol)
int LoadConnection_ex6 (int ConNr, char pAccessPoint, int ConTableLen,CON_TABLE_TYPE pConTable);
● Parameters
>> ConNr
Number of the connection (max 64 connections)
>> pAccessPoint
Access point (zero-terminated) of the driver used, eg "S7ONLINE" for the MPI
driver or 0 (default)
>> ConTableLen
Length of the table of connections provided by the user in bytes
>> pConTable
Pointer to address list of connected users; ‘Adr ==0’ is taken as the end mark of
the list
翻译过来大致是:
LoadConnection_ex6:连接PLC *** 作。
参数:
连接号(0-63);
常值"S7ONLINE"或0;
待连接plc地址属性表长度(字节为单位,常值9);
待连接plc地址属性表。
s7_api要运行在SimaticNet环境下,可以参见下载中心的《SIMATICNETS7ProgrammingInterface》,支持的硬件配置、软件协议非常丰富,速度也较快。prodave提供动态链接库给WINDOWS的高级语言接口函数,使高级语言能对PLC存储区的数据进行读写,支持硬件配置较少,只支持MPI,PPI协议。 查看原帖>>
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