西门子S7-1200卡件CPU1211C
概述
Ethernet is the basic internet technology for worldwide networking.The many possibilities of intranet and internet, which have beenavailable for office applications for a long time, are now utilizedfor production automation with Industrial Ethernet.
Apart from the use of information technology, the deployment ofdistributed automation systems is also on the increase. Thisentails breaking up complex control tasks into smaller, manageableand drive-based control systems. This increases the demand forcommunication and conse a comprehensive and powerfulcommunication system.
Industrial Ethernet provides a powerful area and cell network forthe industrial field, compliant with the IEEE 802.3 (ETHERNET)standard.
优势
Ethernet enables a very fast data transfer (10/100 Mbit/s,1/10 Gbit/s) and at the same time has full-duplex capability.It therefore provides an ideal basis for communication tasks in theindustrial field. With a share of over 90 %, Ethernet is thenumber one network worldwide and offers important features whichhave essential advantages:
Fast commissioning thanks to the simplest connection method
High availability since existing networks can be extended withoutany adverse effects
Almost unlimited communication performance because scalableperformance is available through switching technology and high datarates when required
Networking of different application areas such as office andproduction areas
Company-wide communication based on WAN (Wide Area Network)technology or the internet
Investment protection due to continuous compatibility with furtherdevelopments
Wireless communication using Industrial Wireless LAN
In order to make Ethernet suitable for industrial applications,considerable expansions with respect to functionality and designare required:
Network components for use in harsh industrial environments
Fast assembly of the RJ45 connectors
Fail-safety through redundancy
Expanded diagnostics and message concept
Use of future-oriented network components (e.g. switches)
SIMATIC NET offers corresponding network components andproducts.
集成
Industrial Ethernet with SINAMICSSINAMICS provides Control Units and Communication Boards withPROFINET interface based on 100 Mbit/s Ethernet. This meansthat process communication in real-time, as well as engineering andHMI via standard TCP/IP are ltaneously possible.
It is also possible to access the web server in SINAMICS at thesame time that process communication is in progress.
The CU310‑2 and CU320‑2 Control Units have an additional Ethernetinterface at the front so that service and engineering tasks can beperformed very easily.
Communication with SINAMICS over Industrial EthernetPG/PC/HMI communication
PG/PC/HMI communication is performed using protocols which arebased on the basic TCP/IP protocol.
Engineering and diagnostics with STARTER
IT communication
IT communication is performed using protocols which are based onthe basic TCP/IP protocol. The most important IT protocols are:
HTTP/HT: Hypertext Transfer Protocol (Secure)
Using a standard internet browser, it is possible to retrievepredefined web pages containing diagnostic information from thedevice. Furthermore, user-defined web pages containing informationdefined by the user can be stored in the device.
SNMP: Simple Network Management Protocol
SIMOTION can be perfectly integrated into any Industrial Ethernetcommunication architecture because each SIMOTION device offers atleast one Ethernet interface as standard.
Industrial Ethernet is used in SIMOTION for data communication.Cyclic process communication with SINAMICS drives and distributedIO is implemented by means of PROFINET IO or PROFIBUS DPand PROFIdrive.
PG/PC/HMI communication
Engineering and diagnostics with SIMOTION SCOUT
Connection of SIMATIC HMI Panels with Ethernet interface usingWinCC Basic/Comfort/Advanced
Open communication of, for example, vendor-specific HMI tools overOPC server from SIMATIC NET
Standard communication
This uses the basic protocols UDP and TCP/IP, which are also usedwith Ethernet. SIMOTION offers the corresponding system functionsfor UDP and TCP/IP communication. This permits data to be exchangedover TCP/IP and UDP communication between:
Different SIMOTION devices
SIMOTION and SIMATIC S7 devices
SIMOTION devices and any other device which uses standard TCP/IP orUDP communication. Such devices can be any kind of PC with any kindof operating system or other programmable controllers
HTTP/HT: Hypertext Transfer Protocol (Secure)
FTP: File Transfer Protocol
SMTP: Simple Mail Transfer Protocol
SIMOTION supports the HTTP/HT and FTP protocols. In addition, thefollowing communication options are available for SIMOTION:
Web pages in the SIMOTION device
A standard internet browser can be used to access pre-defined webpages with diagnostics information on the SIMOTION device.Furthermore, user-defined web pages containing information definedby the user can be stored in the SIMOTION device.
OPC XML-DA
SIMOTION offers an OPC XML‑DA server integrated into thedevice. This server supplies SIMOTION process data. Communicationfrom any external device is performed with the SOAP protocol (inaccordance with the specification of the OPC Foundation), which isintegrated into the HTTP protocol.
OPC UA
With the further development of the OPC XML‑DA standard to OPC UA,SIMOTION is offering a runtime-integrated OPC UA server. Thisserver supplies SIMOTION process data. OPC UA permitsstandardized communication between SIMOTION and any externaldevice. TCP/IP with binary data protocol according to the OPCFoundation's specification is used.