Communication channels in WinCC
1)
PC-
based
2)
MPI/Profibus
Soft-Net
3)
MPI/Profibus
Hard-Net
3)
Industrial
Ethernet
Soft-Net
3)
Industrial
Ethernet
Hard-Net
3)
● Industrial Ethernet ISO L4 (1)
---
---
---
---
60
● Industrial Ethernet ISO L4 (2)
---
---
---
---
60
SIMATIC 505 Ethernet TCP/IP
● Industrial Ethernet TCP/IP
---
5)
---
---
---
---
Profibus FMS
● FMS
---
---
40
---
---
Profibus DP (V0-Master)
● DP 1
---
---
122
---
---
● DP 2
---
---
122
---
---
● DP 3
---
---
122
---
---
● DP 4
---
---
122
---
---
Allen Bradley - Ethernet IP
● CAMP
7)
---
5)
---
---
---
---
Mitsubishi Ethernet
● MELSEC Communication Protocol (MC
protocol)
---
5)
---
---
---
---
Modbus TCPIP
● Modbus TCP/IP
---
5)
---
---
---
---
OPC
● Data Access
---
5)
---
---
---
---
● XML-DA
---
5)
---
---
---
---
OPC Unified Architecture
● Data Access
---
5)
---
---
---
---
Remarks
1) In principle, all communication channels can be combined with each other. However, the
subordinate communication drivers can lead to limitations.
When the SIMATIC S7 Protocol Suite is used, a maximum of 64 S7 connections can be
operated. A typical configuration contains 60 S7 connections, for example.
Examples:
● 8 S7 connections via "MPI" and 52 S7 connections via "Industrial Ethernet TCP/IP"
or
● 60 S7 connections via "Industrial Ethernet TCP/IP"
2) COM1/COM2 or internal software interfaces for SIMATIC S7 Protocol Suite communication
"Soft-PLC" and "Slot-PLC" as well as DCOM for OPC.
3) In the case of Soft-Net, communication runs on the PC processor. In the case of Hard-Net,
the communication card has its own microprocessor and relieves the PC processor during
communication.
Performance Data
8.9 Process Communication
WinCC: General information and installation
System Manual, 02/2017, A5E40840020-AA
219
