Specifications

Add-On E2 Peripherals E2 Hardware Setup • 4-3
• 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 Plug-In Echelon Card (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.
4.3.2 Modem/Communication
Expansion Card (New Processor
Board)
The E2’s modem/communication expansion card
mounts above the PIB in the back of the enclosure box as
shown in Figure 4-5. See Table 4-1 for modem expansion
card types and descriptions.
Figure 4-5
- Modem/Com Expansion Card Layout and
Mounting