VM600 networking manual MAVM600-NET/E 3 - 7
Edition 9 - February 2018
Discovering the IP address of a CPUM card
SERIAL COMMUNICATIONS WITH A VM600 RACK
3.4.2.2 Description of net.cfg file
# is used for line comments.
#main network connection is a comment used to indicate the section of the file used
for the primary network interface (ETH1) that is available on either the front panel of the CPUM
card or the front panel of the IOCN card.
NOTE: The primary network interface (ETH1) of a CPUM card can be routed either via the
8P8C connector (NET) on the front panel of the CPUM card or via the upper 8P8C
connector (1) on the front panel of its associated IOCN card (optional). The choice
is made using jumpers J42, J40, J52 and J53 on the CPUM card. For example,
when all of these jumpers are removed, the primary network interface is routed via
the CPUM card.
The secondary network interface (ETH2) of a CPUM card is routed via the lower
8P8C connector (2) on the front panel of its associated IOCN card (optional).
Refer to the VM600 machinery protection system (MPS) hardware manual for
additional information.
net0_ipaddr is the IP address used for the primary network interface (ETH1).
net0_netmask is the network mask used for the primary network interface.
net0_force10Mb is used to limit the data transfer rate for the primary network interface, if
required:
• net0_force10Mb = 0 allows a data transfer rate of up to 100 Mbps.
• net0_force10Mb = 1 limits the data transfer rate to 10 Mbps, which may be required
for compatibility with older networks.
This setting could be required for compatibility with network infrastructure using older
hardware (CPUM cards).
NOTE: For a CPUM / IOCN card pair, the Primary Ethernet Controller (ETH1) can operate
at up to 100 Mbps on newer versions of the IOCN card (PNR: 200-566-000-113
and more recent) but is limited to 10 Mbps on older versions of the IOCN card
(PNR: 200-566-000-112 and earlier).
The Secondary Ethernet Controller (ETH2) is always limited to 10 Mbps.
Under #redundant network connection, #net1_ipaddr, #net1_netmask and
net1_force10Mb are the equivalent parameters used to configure the secondary network
interface (ETH2) that is available on the front panel of the IOCN card, if installed.
3.4.3 CPUM cards running firmware version 074 or earlier
For more information on CPUM card IP addresses, see 4.1 Default IP address parameters.
For a CPUM card running firmware version 074 or earlier, IP addresses are defined in the
hosts file. So, The same procedure as 3.4.1 CPUM cards running firmware version 075 or
later can be used but to access the hosts file (rather than the net.cfg file).
For example, the IP address of the network interface for the CPUM card is displayed under
#Primary Ethernet Port as node1.
NOTE: Refer to the VM600 networking manual, edition 6 (or earlier), for additional
information.
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