IT94-3 HESG440310R2
IT94-3 HESG440310R2
IT94-3 HESG440310R2
描述如何通过调用系统功能SFC 55(WR_PARM)在线修改I/O模块参数。
在S7-300或S7-400的本地机架或远程I/O站点(DP)中的I/O模块，可以通过调用SFC55(WR_PARM)系统功能在系统运行时修改模块参数。SFC 55只修改信号模块的参数数据，不能修改CPU装载存储区中关于目的模块系统组态数据(SDB)，因此系统重启后，SFC55修改的模块参数将被CPU装载的系统数据所覆盖，恢复下载的组态参数。SFC55(WR_PARM)不适用于Profinet l/0。
supports Modbus. The communication with the intelligent field instrument is through
IART protocol or field bus (31. 25Kb ProfibusPA and FF bus).
The system communication between the operation management level and the process control level is realized by Di giNetS network (Industrial Ethernet/IEEE802.3 standard),
Users can choose the communication transmission medium (ordinary cable or optical fiber) and network topology according to the actual situation of the application.
The popular PC and MS_ Windows 2000 have been widely used in various fields all over the world, becoming the de facto standard computer platform.
tower. The operating station 0S, the engineering station ES and the data gateway GS of the Industrial” system use this platform to ensure the system’s
Versatility, openness and ease of use, and bring great convenience to future technical upgrades and maintenance.
System engineering is very convenient. The configuration language is based on the IE061131 3 industry standard, providing function block diagram (FBD), ladder diagram
(LD), instruction list (IL), sequential function chart (SFC), structured text (ST) and other graphical configuration methods. The system contains about 220 functions
Algorithm library for energy blocks and a basic library with more than 200 graphic symbols and an extended library with a large number of 3D symbols.
The system uses the same set of configuration tool software to complete the configuration and 
