_string_buffer(di.Amount)3738#cast the pointer to the buffer to the required type39pBuffer =ctypes.cast(ctypes.pointer(buffer), ctypes.POINTER(ctypes.c_uint8))40di.pData =pBuffer4142fordiindata_items:43check_error(di.Result)4445result, data_items =client.read_multi_vars(data_items)4647res...
int Start, int Amount, int WordLen, void *pUsrData); int ReadMultiVars(PS7DataItemItem, int Items; int MultiVars(PS7DataItemItem int ItemsCount; // Data /O Lean functions intDBRead(int DBNumber int Start, int Size, void *pUsrData); int DBWrite(intDBNumber, int Start...
102 Cli_ReadMultiVars ... 103 Cli_WriteMultiVars ... 105 Directory functions ...
Cli_ReadArea 88 Cli_WriteArea 90 Cli_DBRead 91 Cli_DBWrite 92 Cli_ABRead 93 Cli_ABWrite 94 Cli_EBRead 95 Cli_EBWrite 96 Cli_MBRead 97 Cli_MBWrite 98 Cli_TMRead 99 Cli_TMWrite 100 Cli_CTRead 101 Cli_CTWrite 102 Cli_ReadMultiVars 103 Cli_WriteMultiVars 105 Directory functions ...
int Start, int Amount, int WordLen, void *pUsrData); int ReadMultiVars(PS7DataItemItem, int Items; int MultiVars(PS7DataItemItem int ItemsCount; // Data /O Lean functions intDBRead(int DBNumber int Start, int Size, void *pUsrData); int DBWrite(intDBNumber, int Start...
Snap7 is an open source, 32/64 bit, multi-platform Ethernet communication suite for interfacing natively with Siemens S7 PLCs. - snap7/examples/plain-c/snap7.h at master · SCADACS/snap7
Snap7 is an open source, 32/64 bit, multi-platform Ethernet communication suite for interfacing natively with Siemens S7 PLCs. - snap7/examples/dot.net/snap7.net.cs at 8fbe22b5bd108b73958a2b052c1e698a49e0c1b8 · SCADACS/snap7
S7Client.ReadMultiVars(multiVars[, callback]) This is function allows to read different kind of variables from a PLC in a single call. With it you can read DB, Inputs, Outputs, Merkers, Timers and Counters. multiVars Array of objects with read information (see structure below) The option...
所以通过read_area函数可以一次读取同一地址编号上的所有变量 """ 示例 plc: s7-1200 变量地址:[DB4.DBX0.1, DB4.DBD36, DB4.DBW2 ...] 类型: [bool, float, word ...] """ from snap7 import util, client from snap7.snap7types import S7AreaDB my_plc = client.Client() my_plc.connect(...