Figure 5-2, E2 com# associations connector, Table 5-1 – Emerson E2 User Manual
Page 60
5-2
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E2 RX/BX/CX I&O Manual
Figure 5-2
- Associated Device Connections and COM Ports
E2 PIB COM PORT ASSOCIATIONS
COM1
COM4
COM6
COM2
Serial Device
RS485 COM Port
(2 Connectors)
RS485 COM Card
(2 Connectors)
Serial Device
RS232 Port
POWER INTERFACE BOARD
(PIB)
E2 Modem/Expansion
COM Card Mounted
Above PIB
Plug-In
Modem
Card
COM3
E2 Enclosure (Right Side)
RS485
RS232
E2 COM#
ASSOCIATIONS
CONNECTOR
COM1
COM1 is a pre-set serial connection type (for a PC or laptop) and is located on the RS232
port on the PIB. The baud rate is configurable.
COM2
COM2 may be configured to the type of serial devices you are connecting:
I/O Net (default), ISD 1.0, IMC/Prodigy, or MODBUS 1-3. These devices are connected via
the RS485 connectors (for wiring convenience, two connectors are available) on the PIB.
The connection type and baud rate are configurable.
COM3
COM3 is a pre-set connection type for modems only (optional). The E2 modem/expansion
communication card (P/N 637-4871) has a plug-in modem that uses the phone line jack (RJ-
11). The 637-4872 version has a plug-in for an external modem. Configure the baud rate
and modem type for either the internal modem or the external modem.
COM4
COM4 is located on the optional RS485 COM card for configurable devices. Configure
COM4 to the type of device you are connecting: I/O Net, ISD 1.0 (RX unit default), IMC/
Prodigy (BX/CX unit default), or MODBUS 1-3. The RS485 COM card is connected above
the COM2 dual RS485 connectors on the PIB. The connection type is configurable.
COM6
COM6 is located on E2's optional modem/expansion communication card, which can be
configured for RS485 operation. Configure COM6 to the type of device you are connecting:
I/O Net, ISD 1.0 (RX unit default), IMC/Prodigy (BX/CX unit default), or MODBUS 1-3.
(RS232 operation will be available in future versions of E2.) Both connectors cannot be
used at the same time. Configure the connection type, baud rate, and parity. (The expansion
card mounts onto the four standoffs located on the back of the E2 enclosure above the PIB,
and is compatible with E2 processor board version 237-4801 only). For more information
on this card, refer to
of this manual.
Table 5-1
- COM Ports with Associated PIB and Card Connections - Refer to
COM1
Serial Device
RS232 Port
COM2
Serial Device
RS485 COM Port
(2 Connectors)
Plug-In
Modem
Card(s)
COM3
COM4
RS485 COM Card
(2 Connectors)
COM6
E2 Modem/Expansion
COM Card Mounted
Above PIB
RS485
RS232
NOTE: MODBUS can be configured on multi-
ple ports.