Lenze AC Tech MotionView OnBoard PositionServo ETHERNET/IP Reference Manual page 8

2.2.1 MultiCast Configuration
By default the PositionServo drive automatically generates the multicast address used for I/O messaging. The
default multicast TTL (time to leave) value is 1 which means that the multicast I/O packets will be propagated
over the local subnet only.
The user is allowed to explicitly set the drive's multicast address and TTL values but this feature should be used
carefully. In the Communication folder of the MotionView program there is a menu for Ethernet IP settings. The
TTL and Mcast Config attributes in the TCP/IP object are also implemented. Note that the Num Mcast value in
the Mcast Config attribute must always be 1.
The user configurable PositionServo system variables for multicast are:
Variable ID Meaning
273 TTL
275 Multicast address (default 239.192.15.32)
2.2.2 IGMP Implementation
The IGMP v2 version of the IGMP (Internet Group Management Protocol) is used.
2.2.3 TCP/IP Sockets
The PositionServo supports up to 3 TCP/IP socket connections.
2.2.4 CIP Connections
The PositionServo supports up to 10 CIP connections.
P94ETH01D
Introduction
0 7 8
Type Max Response Time
Message Type Max Response Time
0x11 General Query Maximum time the Querier
waits for report in response
0x12 v1 Report
to a membership query
0x16 v2 Report
0x17 v2 Leave
0x22 v3 Report
In a general query it is the multicast group address
In other cases it is a specific multicast address
Figure 3: IGMP v2 Message Format
15 16 23 24
Checksum
Group Address
Checksum
The 1's complement
of the entire IGMP message
Group Address
4
31