APPENDIX B: ETHERNET BASICS
290
ACR
Programmer’s Guide
Before a computer or router can send data, it has to identify the network ID through the address class. Each class
is assigned a range of numbers.
Address
Class
First octet in
dotted decimal
format begins
with
Excluded from Internet, allowed
for Intranet
A
0 to 127
10.0.0.0 to 10.255.255.255
127.0.0.0 to 127.255.255.255
B
128 to 191
172.16.0.0 to 172.31.255.255
C
192 to 223
192.168.0.0 to 192.168.255.255
Certain IP addresses have particular meanings and are not assigned to host devices:
•
Using zeroes as a host ID signifies the entire network. For example, the IP address of 192.168.0.0
indicates network 192.168 where specific hosts can be found.
•
Using 255 in an octet indicates a broadcast, where data is sent to all host devices on a network. For
example, the IP Address 192.168.255.255 will broadcast data to all host devices in that network.
Suppose you have 6 computers in a class C network. All share the same network address 192.168.10 in the first
three octets. The final octet for each computer is different, and represents the host ID.
Some addresses are reserved for private networks or intranets, where networks are masked or protected from
the Internet:
•
10.0.0.0 to 10.255.255.255
•
172.16.0.0 to 172.31.255.255
•
192.168.0.0 to 192.168.255.255
For additional information on private IP addresses, refer to IEEE specification RFC 1918 Address Allocation for
Private Internets. You can view it at
Summary of Contents for ACR7000 Series
Page 1: ...Effective June 2021 Document Number 88 028698 01E Programmer s Guide ACR Series Controllers ...
Page 23: ...PARKER MOTION MANAGER ACR Programmer s Guide 23 CHAPTER 1 Parker Motion Manager ...
Page 69: ...PARKER MOTION MANAGER ACR Programmer s Guide 69 ...
Page 101: ...ACR BASICS ACR Programmer s Guide 101 CHAPTER 2 ACR Basics ...
Page 153: ...MAKING MOTION ACR Programmer s Guide 153 CHAPTER 3 Making Motion ...
Page 207: ...WRITING ACROBASIC PROGRAMS ACR Programmer s Guide 207 CHAPTER 4 Writing AcroBASIC Programs ...
Page 233: ...WRITING ACROBASIC PROGRAMS ACR Programmer s Guide 233 ...
Page 238: ...BINARY HOST INTERFACE 238 ACR Programmer s Guide CHAPTER 5 Binary Host Interface ...
Page 269: ...TROUBLESHOOTING ACR Programmer s Guide 269 CHAPTER 6 Troubleshooting ...
Page 288: ...APPENDIX B ETHERNET BASICS 288 ACR Programmer s Guide APPENDIX B Ethernet Basics ...
Page 293: ...APPENDIX C SERVO PID TUNING ACR Programmer s Guide 293 APPENDIX C Servo PID Tuning ...
Page 296: ...APPENDIX C SERVO PID TUNING 296 ACR Programmer s Guide ...