Annex
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PC Cards cifX PC/104 | Installation, Operation and Hardware Description
DOC120206UM42EN | Revision 42 | English | 2014-12 | Released | Public
© Hilscher, 2008-2014
IP
Internet Protocol.
IP belongs to the TCP/IP family of protocols and is defined in RFC791. It is
based on layer 3 of the ISO/OSI 7 layer model of networking.
It is a connectionless protocol, i.e. you do not need to open a connection to
a computer before sending an IP data packet to it. Therefore IP is not able
to guarantee that the IP data packets really arrive at the recipient. On IP
level neither the correctness of data nor the consistence and completeness
are checked.
IP defines special addressing mechanisms, see IP Address.
IP Address
Address within IP (the Internet Protocol, part of TCP/IP).
An IP address is an address identifying a device or a computer within a
network using the IP protocol. IP addresses are defined as a 32 bit number.
Usually, for ease of notation the IP address is divided into four 8 bit
numbers which are represented in decimal notation and separated by
points:
a.b.c.d
where a.b.c.d are each integer values between 0 and 255.
Example: 192.168.30.15
However, not all combinations are allowed, some are reserved for special
purposes.
The IP address 0.0.0.0 is defined as invalid.
MAC-ID
MAC = Media Access Control
Definition for Ethernet:
A MAC-ID is on delivery a unique (physical) Ethernet address of the device.
MAC-IDs are defined as a 48 bit number. Usually, for ease of notation the
IP address is divided into six 8 bit numbers which are represented in
hexadecimal notation and separated by “minus”-signs (-):
A-B-C-D-E-F
where A-B-C-D-E-F are each integer values between 0 and 255.
Example: 00-02-A2-20-91-18
Definition for DeviceNet:
The network address of a device serves to distinguish itself on a DeviceNet
fieldbus system from any other device or Slave on this network. This should
be a unique number for each device. A valid MAC-ID address is within a
range of 0 to 63 and can be re-entered and changed in the MAC-ID box in
the Device Configuration Dialog.
