Emerson E2 3 COM3 Internal Modem Plug- In Card P/N, Plug-In Digital I/O Network Card P/N, LEDs

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.

4.3.2COM3 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.

4.3.3COM3 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.

4.3.4Plug-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.

E2 E Power Interface Board (PIB)	Input and Output Wiring
				NORMALLY
				OPEN
				NORMALLY
				CLOSED
E2 Plug-In
Digital I/O	COM 1 COM 2
Network Card	OUTPUT #1	OUTPUT #2	INPUT #1	INPUT #2

Figure 4-7- E2 Digital I/O Network Card Install and Wiring

4.3.4.1LEDs

The plug-in Digital I/O Network card LEDs can be used to determine the status of normal operating parame- ters for the card.

Plug-In Digital I/O	Status
Card LEDs
Red D1 (Out 1)	ON: Relay Output 1 is On
Red D4 (Out 2)	ON: Relay Output 2 is On

Table 4-1- LED Status for Plug-In Digital I/O Card

4.3.5Plug-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 Repeater card con- nects above the power interface board on the case mounts using standoffs and screws.

See Section 3.4.1.3, Mounting the Four-Channel Repeater for more information.

Add-On E2 Peripherals E2 Hardware Setup • 4-3