PFEA112-65
PFEA112-65
PFEA112-65
描述了SCALANCE W模块在工业应用中的网络管理应用，例如Load&Save，
Syslog，E-mail，SNMP和SNTP协议。并阐述了这些网络管理协议的基本原理。而且通过一些具体的配置实例说明了使用这些网络管理功能的基本方法。
TFTP是Trivial File Transfer Protocol的缩写，意思为简单文件传输文件协议。该协议与FTP(文件传输协议)的区别在于没有目录和授权加密机制，并且传输的容量有限制，一般用于传输小文件。所以主要用于简单下载组态文件，网络器件的软件升级等等。
TFTP协议基于UDP协议，数据报文长度为512个字节，服务器端口号为69。TFTP协议有着自身的校验机制。每一个数据报文发送之后，都有一个应答来响应。TFTP支持3种传输模式，分别为“netascii”“octet”和”mail”。前两种模式分别对应“ASC…”和“Image”(binary)模式。“mail”模式现在很少使用。
SCALANCE W作为TFTP客户端，支持TFTP协议，不能通过WBM来禁止或激活该协议。
structure
The Freelance 800F process control system is divided into operator levels
and process control level. The operator level contains controls for operation and display.
Archiving and logging, trending and alarming functions. Controller executes open loop
and closed loop control function.
Freelance 800F DigiVis Operator Level
DigiVis operator stations use PC hardware, either standard commercial
Business PCs can also be industrial-grade PCs and run on Micro-
under soft Windows operating system. DigiVis supports dual-screen display operation
operating technology, that is to say, two operations can be performed using one PC
station and operate with a mouse and a keyboard.
Operator level can install one engineering station and several operators
stand. ControlBuilderF engineering station configures and adjusts the system
Mode. Usually, we can use portable devices such as notebooks to
The system is now configured in the office and on site. Operator-level PC
Can also be used as an engineer station. Engineer standing during system uptime
Intervals can be closed without a permanent connection to the system.
Freelance 800F Process Control Stage
At the process control level, the Freelance 800F system can be controlled by
It consists of a number of process control stations connected to I/O units. you can choose this
Some process stations are in redundant mode (CPU redundancy, fieldbus module redundancy
redundant) or non-redundant mode. Modular pluggable input/output modules
Blocks are freely selected and used according to the type and number of system process signals.
AC800F controller connects remote I/O or field device via fieldbus
ready.
system communication
Communication between operator level and process control level using TCP/IP
Protocol system bus (based on Ethernet), you can choose different
transmission medium such as AUI, twisted pair, fiber optic or
