1. Ethernet, IP Addresses and Honeywell Automation Systems

2. Background – Ethernet Connections Cat-5
Though Ethernet now supports many media, the most common one in use is Cat 5 (Category-5) twisted-pair cable.
Maximum distance between nodes is restricted to 100 meters.
The maximum distance between any two nodes on a segment cannot exceed 2500 meters
The maximum number of nodes on a network is 1024, but actual experience has shown that when the number of nodes on a network exceeds 200, too much of the network’s bandwidth is wasted by collisions.

3. Background: Ethernet Connections
PC-to PC Connections using Ethernet require a crossover cable Or
Electrically powered switch/hub/router

4. Background – TCP/IP addressing
Most PCs, Laptops and most modern automation systems include at least one component with an Ethernet connection.
All Ethernet ports have a unique addressed called the MAC address, but it is typically not used
Common network communication relies on TCP/IP addressing. (Transmission Control Protocol / Internet Protocol)

5. Background - (TCP)/IP Address
IP addresses are typically expressed as 4 groups of numbers separated by a “.”
Each group is between 0 and 255
Each decimal number represents an 8-bit binary group
Example:
The Internet is a collection of networks whose users communicate with each other. Each communication carries the address of the source and destination networks and the particular machine within the network associated with the user or host computer at each end. This address is called the IP address (Internet Protocol address). This 32-bit IP address has two parts: one part identifies the network (with the network number) and the other part identifies the specific machine or host within the network (with the host number). An organization can use some of the bits in the machine or host part of the address to identify a specific subnet. Effectively, the IP address then contains three parts: the network number, the subnet number, and the machine number.

6. IP Subnet Mask Each IP Address includes a subnet mask
Subnet filters RESTRICT Ethernet connections Subnet numbers act as a “MASK” or “Gate”
Each subnet segment is a string of leading 1’s and 0s
Each subnet segment may only equal one of 8 numbers:
255 = (must match exactly)
254 = (must match except last bit (2 allowed))
252 = (must match except last 2 bits (4 allowed))
248 = (must match except last 3 bits (8 allowed))
240 = (must match except last 4 bits (16 allowed))
224 = (must match except last 5 bits (32 allowed))
192 = (must match except last 6 bits (64 allowed))
128 = (must match except last 7 bits(128 allowed)
0 = (passes through everything! (256 allowed))

7. Subnet Mask Filtering Example 1:
(IP)
(255 blocks everything that does NOT match)
That’s equal to:
(IP)
(SUBNET)
Only allows IP addresses :
up to
So this computer may connect to any other with an IP
address from up to

8. Subnet Mask Filtering Example 2:
(IP)
(block all but 8 computer addresses)
That’s equal to:
(IP)
(SUBNET)
Only allows:
up to
This computer will only connect with IP addresses
from up to

9. Connecting a Server to the Internet
Server is part of a LAN
LAN has a switch/hub
LAN has a router/gateway for connection to the Internet
Account has fixed single IP address
Router uses MAP function
Fixed Server IP address
DSL Router, Gateway &
DNS Address
Fixed EXPOSED Internet IP
MAP setup

10. Assigning Addresses – Static and Dynamic
How are IP address assigned to the node?
There are two basic methods; manual and automatic
Automatic IP address are generated from a DHCP server or router somewhere else on the network
When an IP address is assigned manually, it is referred to as a static IP address. Each time the node is connected to the network, it will use the IP address that was assigned.
Windows users assign static IP addresses
Start
Settings
network connections

11. Changing a Static IP Address with Windows
1. Open Network Connections
5. Select Use the following IP address
2. Open Local Area Connection
4. Select Internet Protocol (TCP/IP)
3. Select Properties

12. Direct Connections with Static IP addresses
Manually Set IP Address on PC similar to controller’s IP address (within allowed subnet range)

13. Identifying an IP address on a PC:
Start > Settings > Network Connections
Select Local Area Connection
View the Support Tab
(assigned by DHCP
In this example)

14. Identifying IP address on JACE
See installation Instructions
Remove Cover
Set Mode Jumper for Serial Shell
Use Serial NULL modem cable on COM-1
Use HyperTerminal software for connection
115,200 8-N-1
On boot up will display Ethernet port address

15. Identifying IP address on WEBs 400/500
See installation Instructions
Set Mode Jumper for Serial Shell
Use Tridium adapter cable for COM-1
Use HyperTerminal software for connection
57,600 8-N-1
On boot up will display Ethernet port address

16. PINGing a computer Utility program built into windows
Verifies proper Ethernet IP to Ethernet IP communication
Select Start > Run > type “command” to open window
In the command window type “ping xxx.xxx.xxx.xxx” where xxx is the IP address to verify communication to
Type “exit” to close command box

17. WEBs Connections
Questions?