EM58 • HS58 • HM58 POWERLINK
4.7 MAC address and IP address
The unit can be identified in the network through the
MAC address
and the
IP
address
.
The MAC address has to be intended as a permanent and globally unique
identifier assigned to the unit for communication on the physical layer; while
the IP address is the name of the unit in a network using the Internet protocol.
MAC address is 6-byte long and cannot be modified. It consists of two parts,
numbers are expressed in hexadecimal notation: the first three bytes are used to
identify the manufacturer (OUI, namely Organizationally Unique Identifier),
while the last three bytes are the specific identifier of the unit. The MAC address
can be found on the label applied to the encoder.
The IP address must be assigned by the user to each interface of the unit to be
connected in the network, while the subnet mask is always 255.255.255.0 as in a
class C net.
For additional information on the MAC address refer to the “5.3 MAC address”
section on page 37.
For additional information on the IP address refer to the “4.8 POWERLINK Node
ID: DIP A” section on page 32.
4.8 POWERLINK Node ID: DIP A
WARNING
Power supply must be turned off before performing this operation!
The POWERLINK Node ID cannot be set via software.
The private class C Net ID
192.168.100.0
is used in the POWERLINK network. A
class C network provides 254 (1-254) IP addresses which match the number of
valid POWERLINK Node IDs. As they are CNs, Lika encoders accept values from 1
to 239, in compliance with the POWERLINK specifications. Address 0 is invalid,
addresses from 240 to 255 are reserved to MNs or special functions. The
POWERLINK MN (Active MN) is addressed to 240. The Host ID of the private class
C Net ID 192.168.100.0 is identical to the POWERLINK Node ID. Hence the last
byte of the IP address (Host ID) has the same value as the POWERLINK Node ID.
The following figure illustrates the construction of the IP address.
192.168.100. POWERLINK Node
Net ID
Host ID
The following table summarises the default IP parameters.
IP Parameter
IP address
IP address
192.168.100.<POWERLINK Node ID>
Subnet mask
255.255.255.0
Default Gateway
192.168.100.254 (it may be modified)
MAN EM58_HS58_HM58 PL E 1.1.odt
Electrical connections
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