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4.3 Protocols
Multi Protocol Functionality
The compact I/O-devices of the TBEN-L product line combine the three Ethernet-protocols
Modbus TCP (description page 49 ff.),
EtherNet/IP™ (description page 65) and
PROFINET (description page 99 ff.)
in one device.
A multi-protocol device can be operated without intervention of the user (which means, without
changes in the parameterization) in all of the three Ethernet protocols mentioned.
During the start-up, after a power-on, the module runs in "snooping" mode and detects the Ether-
net protocol which requests a link connection by listening the traffic.
If a protocol is detected, the device is set automatically to the respective protocol. After this an
access to the device from other protocols is read-only.
4.3.1 Explicit/Manual Protocol Selection
The protocol can also be determined manually. This skips the snooping-phase and the device is per-
manently set to the selected protocol. An access to the device from other protocols is read-only.
The explicit protocol selection allows thus an additional locking mechanism.
4.3.2 Protocol Dependent Functions
PROFINET
Fast Start-UP (FSU), see FSU - Fast Start-Up (prioritized startup), page 101
Topology discovery
Address assignment via LLDP
MRP, see MRP (Media Redundancy Protocol), page 102
EtherNet/IP™
QuickConnect (QC), see QuickConnect in TBEN, page 68
DLR (Device Level Ring), see Device Level Ring (DLR), page 69