- 179 -
11.
RARP (Reverse Address Resolution Protocol)
RARP provides a method of dynamically mapping 48-bit MAC address to the
corresponding 32-bit IP address.
32-bit IP address
ARP RARP
48-bit MAC address
12.
ICMP (Internet Control Messages Protocol)
No system works correctly all the time. ICMP provides a method of communicating
between the Internet Protocol software on one machine and the Internet Protocol
software on another. It allows gateways to send error or control messages to other
gateways or allows a host to know what is wrong with the network communication.
13.
Ping
Ping sends an ICMP echo request message to a host, expecting an ICMP echo reply to
be returned. Normally, if a host cannot be pinged, you won’t be able to use Telnet or
FTP to connect to the host. Conversely, if Telnet or FTP cannot be used to connect to
a host, Ping is often the starting point to determine what the problem is.
14.
Packet
A packet is the unit of data sent across a physical network. It consists of a series of bits
containing data and control information, including the source and the destination node
(host) address, and is formatted for transmission from one node to another.
15.
Socket
Each TCP segment contains the source and destination port number that can be used to
identify the sending and receiving application. These two values, along with the source
and destination IP address in the IP header, uniquely identify each connection.
The combination of an IP address and a port number is called a socket.
Summary of Contents for PDS-700 Series
Page 56: ...PDS Series User Manual V1 4 Oct 2009 56 PDSM 782 D PPDSM 782 D Pin Assignments...
Page 58: ...PDS Series User Manual V1 4 Oct 2009 58 PDS 700 IP67...
Page 59: ...PDS Series User Manual V1 4 Oct 2009 59...
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Page 61: ...PDS Series User Manual V1 4 Oct 2009 61 DS 712 PPDS 712 MTCP Pin Assignments E1 10 100 Base TX...
Page 62: ...PDS Series User Manual V1 4 Oct 2009 62 DS 715 PPDS 715 MTCP Pin Assignments E1 10 100 Base TX...
Page 64: ...PDS Series User Manual V1 4 Oct 2009 64 Digital Output...
Page 66: ...PDS Series User Manual V1 4 Oct 2009 66 PDSM 700 PPDSM 700 MTCP...
Page 67: ...PDS Series User Manual V1 4 Oct 2009 67 PPDS 700 IP67...
Page 68: ...PDS Series User Manual V1 4 Oct 2009 68...
Page 69: ...PDS Series User Manual V1 4 Oct 2009 69 Din Rail Mounting Stack Mounting...
Page 91: ...PDS Series User Manual V1 4 Oct 2009 91...
Page 147: ...147 Init Mode Short INIT and GND PDSM 700 D PPDSM 700 D MTCP Run Mode Open INIT...
Page 152: ...PDS Series User Manual V1 4 Oct 2009 152 Example...
