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Overview2
S7 communication with TCP/IP for Industrial Ethernet
S5-compatible communication for Industrial Ethernet S7-300 with CP 343-1 Lean, CP 343-1 or CP 343-1 Advanced
S7-400 with CP 443-1 or CP 443-1 Advanced S7-400 with
CP 443-1 Advanced
PC/PG with CP 1616 or CP 1613 A2 PC with
CP 1613 A2 with S7-1613 or SOFTNET-S7 phoneCell
Field PG with CP 7515
S7-200 with CP 243-1 or CP 243-1 IT
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Industrial Ethernet
Industrial Ethernet
G_IK10_XX_10010
S7-300 with CP 343-1 Lean, CP 343-1
or CP 343-1 Advanced S7-400 with
CP 443-1 or CP 443-1 Advanced
S5-115U to 155U with CP 1430 PC/PG
CP 1613 A2 CP 7515
SOFTNET-S7 or S7-1613
Introduction
Configuration examples
2 ■
Overview (continued)PG/OP communication with S7 routing for transparent access to e.g. configuration and diagnostics data
Installation of a small, local PROFINET network with an integrated switch in the CP 443-1 Advanced
PG with CP 1613 A2 and STEP 7 V5
S7-400 with CP 443-1 or CP 443-1 IT Industrial Ethernet
PROFIBUS
S7-400 with CP 443-1 or CP 443-1 IT S7-400 with
CP 443-1 or CP 443-1 IT
ET 200X ET 200S
CP 443-5 Extended
CP 443-5 Basic
S7-300 with CP 342-5 S7-300 with
CP 343-5
S7-400 with CP 443-5 Basic
PROFIBUS
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IE/PB Link orIE/PB Link PN IO
ET 200S ET 200X
SIMATIC S7-400 with CP 443-1 Advanced
SIMATIC S7-300 with CP 343-1
Industrial Ethernet
Panel PC
Field PG ET 200S
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PROFINET
Introduction
Topologies
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Overview2
Network performance and network technologies for Industrial Ethernet
When combined, the current Industrial Ethernet technologies can boost performance on the network by a factor of 50 and more in comparison with the original 10 Mbit/s technology.
These technologies are:
• Fast Ethernet with 100 Mbit/s:
Messages are transported much faster than Ethernet (10 Mbit/s) and therefore only occupy the bus for an extremely short time.
• Gigabit Ethernet with 1 Gbit/s:
Gigabit Ethernet is faster than Fast Ethernet by a factor of 10, the bus is occupied for only one tenth of the time.
• Full Duplex prevents collisions:
The data throughput increases enormously because the usual message repetitions are avoided.
Data can be sent and received simultaneously between two stations. The data throughput for a full duplex connection therefore rises to 200 Mbit/s with Fast Ethernet and to 2 Gbit/s with Gigabit Ethernet.
• Switchingsupports parallel communication:
When a network is subdivided into several segments using a switch, or individual stations are connected direct to a switch, this results in load separation. Data communication is possible in each individual segment independently of the other seg-ments. In the overall network, several messages can therefore be en-route simultaneously. The increase in performance is therefore due to the sending of several messages simulta-neously.
• Autocrossover automatically crosses the send and receive cables on Twisted Pair interfaces.
• Autosensingdescribes the characteristic of network nodes (data terminals and network components) that automatically detect the transmission rate of a signal (10 Mbit/s, 100 Mbit/s or 1 Gbit/s) and support autonegotiation.
• Autonegotiation is a configuration protocol on Fast Ethernet.
Before initiating the actual data transmission, network devices automatically negotiate a transmission mode which is sup-ported by any device (100 Mbps or 10 Mbps, full duplex or half duplex).
• Gigabit cabling system
The 8-core FastConnect cabling system of SIMATIC NET supports transmission rates of up to 1 Gbit/s.
Throughput of the network/values for 5 network stations 1000 Mbit/s full duplex
1000 Mbit/s switched 100 Mbit/s full duplex 100 Mbit/s switched 100 Mbit/s shared 10 Mbit/s full duplex 10 Mbit/s switched 10 Mbit/s shared
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*) Effective data processing capacity because of collisions
Data processing capacity
4 Mbit/s *) 10 Mbit/s
20 Mbit/s 40 Mbit/s *)
100 Mbit/s
200 Mbit/s
1000 Mbit/s
2000 Mbit/s
Introduction
Topologies
2 ■
Overview (continued) Ethernet SwitchingThe Industrial Ethernet switch has the following functionality:
• Depending on the number of available interfaces, switches are able to simultaneously interconnect several pairs of sub-networks or stations temporarily and dynamically, with each connection possessing the full data throughput.
• By filtering the data traffic on the basis of the Ethernet (MAC) address of the data terminal, the local data traffic remains local; only data to users of another subnetwork is forwarded by the switch.
• More data terminals can be connected than in a classic Ethernet network.
• Error propagation is limited to the subnetwork concerned.
The switching technology offers definite advantages:
• Subnetworks and network segments can be created.
• The data throughput is increased and with it the network per-formance as a result of structuring the data communication.
• Easy rules for network configuration.
• Network topologies with 50 switches and an overall extension of up to 150 km can be implemented without the need to take signal propagation times into account.
• Unlimited extension of the network by connecting individual collision domains/subnetworks.
• The signal propagation times must be considered at distances over 150 km.
• Easy, reaction-free extension of existing networks.
Full duplex
Full duplex (FDX) is an operating mode in the network that, in contrast to half duplex, allows stations to send and receive data simultaneously. When FDX is used, collision detection is auto-matically deactivated in the participating stations.
For FDX, transmission media with separate send and receive channels must be used, e.g. FOC and TP, and the participating components must be able to store data packages. With an FDX connection collisions do not occur, so components that support FDX can send and receive simultaneously at the nominal trans-mission rate. The data throughput therefore increases to twice the nominal transmission rate of the network, to 20 Mbit/s with the classic Ethernet and 200 Mbit/s with Fast Ethernet. With Gigabit Ethernet, up to 2000 Mbit/s are achieved.
A further advantage of FDX is the increase in the network exten-sion.
By deactivating the collision principle, the distance between two components can be increased by the size of a collision domain or more. With full duplex, the maximum distance can extend as far as the performance limit of the send and receive compo-nents. This is especially the case in connection with fiber-optic cables. When 10/125 μm glass fiber-optic cables are used, distances of up to 26 km can be achieved.
LAN LAN
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