3.3 Network Establishment
The controller must establish communications directly with each module before the module can
participate in the network. Once communications are established, the module can participate in an
existing network.
3.4 Communication Protocols
The Profinet Module supports the following protocols:
Table 3-1 Supported communication protocols
CL-RPC
Connectionless remote procedure call
DCP
Discovery and configuration protocol
LLDP
Link layer discovery protocol
MRP
Media redundancy protocol
RTC
Real-time cyclic protocol; Class 1 and 2 (unsynchronised), Class3 (synchronised)
SNMP
Simple network management protocol
The Profinet Module does not support the following protocols:
Table 3-2 Unsupported communication protocols
DHCP
Dynamic host configuration protocol
MCR
Multicast communication relation
RTA
Real-time acyclic protocol
Flexible
RT_CLASS_2
Real-time cyclic protocol; Class 2 synchronised
RT_CLASS_UDP Unsynchronised cross-subnet communication between different subnets
The maximum data length for input and output data is 256 bytes each.
3.5 Addressing
Each device in a network is addressed using a MAC address and an IP address, and can be assigned a
symbolic name associated with the MAC address.
•
The module must be assigned a static IP address (see
Ethernet Device Configuration Tool
on page
8), or can be assigned an IP address by the master via DCP. The Profinet Module does not support
DHCP addressing.
•
The symbolic name is optional and must be configured within the device.
•
The MAC address is fixed within the device and is printed on a label on the front of the module.
Figure 3-2 MAC ID location
MAC: 00-02-A2-25-DC-B3
1
2
TX/
RX 2
TX/
RX 1
Link
2
Link
1
Err
or
Sta
tu
s
Po
wer
14701.
B
Profinet Module: User Guide
7
Issue: B
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