Emerson E2 - Manual (Page 53)

Add-On E2 Peripherals E2 Hardware Setup • 4 - 3
4.3 Add-On E2 Peripherals
The E2 has many plug-in card options to choose from:
• Plug-in Echelon card with mounting screw
• RS485 Modem/communication expansion card
• Plug-in digital I/O Network card
• RS485 port card
• Plug-in Four-Channel Internal Repeater
• Plug-in modem with mounting screws and stand-
offs (previous generation processor board only)
4.3.1 Echelon Card Plug-In (P/N
537-4860) with mounting screw (P/N
101-4201)
Echelon is a two-conductor network that interconnects
E2s and other associated devices. All Echelon devices are
wired together using the daisy-chain method of network
structuring. For the E2 to communicate on the Echelon
Network, the plug-in card must be connected. No Echelon
Network communication can occur without the card.
The plug-in Echelon card connects to the main proces-
sor board on the far right side of the board just above the
Power Interface Board (PIB) connector. The connector
for the plug-in Echelon card is labeled Echelon Plug-In so
it is easy to find.
Figure 4-5 - Echelon Card