Horner APG XL4 OCS HE-ETN300 - Manual (Page 12)

CH.2 SUP0740-07
11/30/2009 Page 12 of 98 # 958
2.3 Network Administrator Installation Notes
When connecting an Ethernet Module to a local network, the following information is provided to
the Network Administrator, as an aid in configuring Ethernet Hubs, Routers, Switches, Gateways
and Servers.
2.3.1 UDP and TCP Ports
Each protocol supported by the Ethernet Module (except ICMP) uses one or more UDP and/or
TCP Ports as the destination port for all messaging, as shown in Table 2.1. (Note: Any port can
be used as the source port.) Required port usage for the supported protocols should be taken into
account when configuring Ethernet Routers and Gateways.
Table 2.1 – Ethernet Protocol UDP and TCP Port Usage
UDP Port TCP Port
Ethernet Protocol
Hexadecimal Decimal Hexadecimal Decimal
EGD 4746 18246
SRTP 4745 18245
Modbus 01F6 502
CsCAN 4845 18501
Ethernet / IP 08AE 2222 AF12 44818
FTP 0014 and 0015 20 and 21
HTTP 0050 80
* SMTP 0035 53 0019 25
Note: * SMTP connects via TCP connection using default port 25 (user configurable), but in
Cscape | Messaging | Email feature if user selects 'Obtain SMTP Server IP Address
from DNS Server' then UDP connection will be used to obtain Server IP, in such case UDP
port 53(Decimal) will be used.
2.3.2 EGD Unicast and Multicast IP Addressing
When using Ethernet Global Data (EGD) protocol for peer-to-peer communication, there are two
methods for sending data: (1) send to a single device or (2) send to a group of devices.
When sending to a single device (method 1), EGD protocol uses Unicast IP Addressing. This
means that the IP header’s 32-bit Destination IP Address will contain the intended recipient’s
unique IP Address.
When sending to a group of devices (method 2), EGD protocol uses Multicast IP Addressing.
This means that the IP header’s 32-bit Destination IP Address will contain one of the 32 Multicast
IP Addresses shown in Table 2.2.
Table 2.2 – EGD Multicast IP Addressing
Group ID Multicast IP Address
1 224.0.7.1
2 224.0.7.2
:
: :
:
32 224.0.7.32