Technical data

176 • Fieldbus Communication
ETHERNET
WAGO-I/O-SYSTEM 750
BACnet/IP Controller
4.1.3.2 Communication Protocols
In addition to the ETHERNET standard, the following important communica-
tion protocols are implemented in the WAGO ETHERNET based (program-
mable) fieldbus couplers and controllers:
• IP Version 4 (Raw-IP and IP-Multicast )
• TCP
• UDP
• ARP
The following diagram is intended to explain the data structure of these proto-
cols and how the data packets of the communication protocols ETHERNET,
TCP and IP with the adapted application protocol MODBUS nested in each
other for transmission. A detailed description of the tasks and addressing
schemes of these protocols is contained in the following.
Fig. 4-8: Communication Protocols G012907e