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4-4 • E2 RX/BX/CX I&O Manual 026-1610 Rev 13 14-SEP-2011
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 4-6. See Table 4-1 for modem expansion
card types and descriptions.
4.3.3 Plug-In Modem Card (P/N
537-4870) with mounting screws
(P/N 101-4038) and standoffs (P/N
107-9440) (Previous Generation Pro-
cessor Board)
The E2’s internal modem mounts in the PC-104 slot
located at the top left edge of the E2 main processor board
(See Figure 3-18 on page 3-6). Disconnect power to the
unit, and carefully plug the male pins on the back of the
modem card into the E2’s PC-104 slot. Use the standoffs
and screws supplied with the modem card to secure the
card to the main processor board, as shown in Figure 3-18
on page 3-6). When finished, restore power to the E2.
4.3.4 Plug-In Digital I/O Network
Card (P/N 537-4880)
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 4-6
- Modem/Com Expansion Card Layout and
Mounting
Modem P/N Description
637-4871
Modem/com expansion card with modem and RS485
serial communication port plug-in.
Note that the RS232 and RS485 ports are counted as one
port (COM6); only one connector at a time may be used.
The COM6 RS232 will be selectable in future versions
of E2.
637-4872
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. This model
comes with a cable that has a male DB-9 header and a
DB-9 to DB-25 converter (not shown) to support the
standard external modem interface.
Note that the RS232 and RS485 ports are counted as one
port (COM6); only one connector at a time may be used.
The COM6 RS232 will be selectable in future versions
of E2.
637-4873
Com expansion card with RS485 serial communication
port.
Note that the RS232 and RS485 ports are counted as one
port (COM6); only one connector at a time may be used.
The COM6 RS232 will be selectable in future versions
of E2.
Table 4-1 - Modem/Com Card Part Numbers and Descriptions
COM6
RS232
COM6
RS485
Plug-In
Modem
COM3
COM6
RS232
COM6
RS485
COM3 RS232
Plug-In for
External Modem
COM6
RS232
COM6
RS485