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Add-On E2 Peripherals E2 Hardware Setup • 4-3
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 processor
board.
4.3.2 COM3 RS232 Plug-In for
External Modem (P/N 638-4875)
Figure 4-5 - COM3 External Modem
Modem/com expansion card with an RS232 plug-in
(COM3) that can interface with an external modem, and
an RS485 serial communication port plug-in.
4.3.3 COM3 Internal Modem Plug-
In Card (P/N 638-3362)
Figure 4-6 - COM3 Internal Modem
E2’s Serial Configuration is the centralized location
where all communication ports (COM ports) may be set up
in the E2 controller. To support the increasing number of
third-party devices that E2 can communicate with, E2 has
the expanded flexibility of dynamic COM ports that will
support different types of communication protocols to
meet the specific needs of the user.
4.3.4 Plug-In Digital I/O Network
Card (P/N 638-4880)
This card adds two user-programmable digital outputs
and two digital inputs to enable connection of switches
and relays (relay contacts are rated at 3A up to 24 VAC).
The plug-in Digital I/O Network card connects to the
power
interface board to the right of the two fixed RS485
I/O Network connectors.
Figure 4-7 - E2 Digital I/O Network Card Install and Wiring
OUTPUT #1
OUTPUT #2
INPUT #1
INPUT #2
E2 E Power Interface Board (PIB)
COM 1 COM 2
E2 Plug-In
Digital I/O
Network Card
Input and Output Wiring
NORMALLY
OPEN
NORMALLY
CLOSED
4.3.4.1 LEDs
The plug-in Digital I/O Network card LEDs can be
used to determine the status of normal operating parame-
ters for the card.
Table 4-1
- LED Status for Plug-In Digital I/O Card
Plug-In Digital I/O
Card LEDs
Status
Red D1 (Out 1) ON: Relay Output 1 is On
Red D4 (Out 2) ON: Relay Output 2 is On
4.3.5 Plug-In Four-Channel
Internal Repeater
The four-channel repeater (P/N 638-4830) boosts sig-
nal strength on Echelon Networks. However, the four-
channel repeater is
also useful as a means of connecting
the E2 to its associated devices using more than one daisy
chain.
With a four-channel repeater mounted in the E2, you
can run
as many as three daisy chain segments out into the
field, each of which can be as long as the prescribed Eche-
lon maximum wire length. The fourth channel of the
repeater can be used to connect other E2s
in a separate
daisy-chain, eliminating the need to run cable from the
field back to the next E2.
The plug-in Four Channel Internal R
epeater card con-
nects above the power interface board on the case mounts
usin
g standoffs and screws.
See Section 3.4.1.3,
Mounting the Four-Channel
Repeater for more information.