Emerson E2 - Manual (Page 84)

7-2 • E2 RX/BX/CX I&O Manual 026-1610 Rev 13 14-SEP-2011
7.3 Software Specifica-
tions
TCP/IP
E2 controller versions 2.10 and later communicate
between controllers using the TCP/IP protocol. TCP Port
7238 is the default for connections established between the
controllers. All peer communications occur over this port.
7.4 Ethernet Network
Layouts
The two types of network options for E2 controllers
using Ethernet communications are:
1. “Closed Network” - E2 devices are not connected
to a store’s LAN. (The only devices on the net-
work are the E2 controllers themselves.) This
network type is used if there is no need to inte-
grate the network into the company’s intranet.
2. “Open Network” - E2 devices are connected to
the store’s LAN. (Devices on the network include
E2s and other Ethernet-TCP/IP devices.) This
network type is used if the network will be con-
nected to the store’s LAN.
The E2 peer Ethernet network facilitates communica-
tions between E2 controllers. These include at least the
following:
• Routing of messages between external entities
such as UltraSite, InSite, Site Manager, and
non-gateway E2 controllers.
• Distribution of global data and other network
variables such as system time, controller iden-
tification, etc.
• Communication between E2 controller applica-
tions such as Remote Login and Remote File
Services.
7.4.1 Closed Network Layout
NOTE: Contact your IT Network Administra-
tor for setup parameters for both closed and
open networks.
NOTE: The gateway E2 is the E2 controller at
a remote site to which UltraSite directly con-
nects. It is through this E2 that UltraSite com-
municates with the other controllers (defined as the
“non-gateway” E2s and external entities such as
UltraSite, InSite, Site Manager etc.).
Figure 7-1 - Closed Network Layout