HMS Networks Anybus CompactCom 40 Network Manual page 44

® ™
Anybus CompactCom 40 - PROFINET IRT Transparent
Ethernet
8.2. Enabling Transparent Ethernet
Transparent Ethernet is not enabled at delivery. Attribute #16 (instance #1) in the Anybus Object (01h) has to be
set to 0002h during setup. If this attribute is not changed, the Anybus CompactCom 40 PROFINET IRT will start up
with full IT functionality instead of transparent Ethernet functionality. Transparent Ethernet cannot be enabled
after setup is finished. Once Transparent Ethernet is enabled, no IT functionality is enabled.
8.3. MAC Address Synchronization
The host application and the Anybus CompactCom must use the same MAC address when communicating on
Ethernet. The host application must make sure that this is the case. This can be accomplished in ether of the two
ways described below:
• The pre-programmed MAC address in attribute #1 (instance #1) in the Network Ethernet Object (0Ch) is read
and used by the host application when communicating on Ethernet.
• The Ethernet Host Object (F9h, instance #1, attribute #1) is implemented in the application, set with a MAC
address provided and used by the application. At initialization, the Anybus CompactCom will read and then use
the application provided MAC address from this object.
8.4. IP Configuration Synchronization
The host application TCP/IP stack and the Anybus CompactCom 40 PROFINET IRT TCP/IP stack must use the
same IP configuration when communicating on Ethernet. The Anybus CompactCom 40 PROFINET IRT will write
its currently used IP configuration to instance attribute #16 in the Ethernet Host Object (F9h) whenever the
configuration is assigned or changed. The host application must use this configuration. DNS server and domain
names can be read from the Network Configuration Object (04h) after an IP configuration update.
8.5. Routing Restrictions
The internal router receives all frames from the network. The frames that are intended for the industrial Ethernet
network internal software, are recognized and routed to the Anybus CompactCom. The remaining Ethernet
frames will be routed to the host application. Some restrictions apply to the use of e.g. UDP and TCP ports,
sometimes also depending on industrial Ethernet network. If the host application is intended only for use with
PROFINET, the restrictions for the other networks can be ignored.
IMPORTANT
The host application is responsible for taking the following restrictions into consideration. If they are
not followed, the Ethernet communication will not work correctly.
8.5.1. EtherTypes
The Anybus CompactCom internally uses bit 12 and bit 13 (mask 3000h) in the EtherType. Thus the host
application cannot implement protocols using Ethertype, where these bits are used..
The following EtherTypes are used by PROFINET and should not be used by the host application:
• 8892h (PNIO)
• 88CCh (LLDP)
• 88E3h (MRP)
8.5.2. Multicast MAC Addresses
The host application must not transmit or receive any data from and to the following MAC addresses as they may
be used by the industrial Ethernet network (PROFINET):
• 01-0E-CF-XX-XX-XX
• 01-80-C2-00-00-0E
• 01-00-5E-40-F8-00 ... 01-00-5E-40-FB-FF
Page 36 of 177
Enabling Transparent Ethernet
SCM-1202-021 Version 2.6