Communications; Human-Machine Interface (Hmi) Module; Serial Communications; Table 1-4. Serial Ports - Emerson FB2100 Instruction Manual

1.7

Communications

The flow computer includes three serial communication ports. The serial ports allow
communication using DNP3, Modbus, BSAP, and ROC protocols.

Table 1-4. Serial Ports

Port
COM1
COM2
COM3
1.8

Human-Machine Interface (HMI) Module

The flow computer includes an HMI module with an optional liquid crystal display (LCD) for local
operator access to the device. The LCD, if present, presents a series of menus that sequentially
display the current values of particular process variables. A configuration parameter in FBxConnect
determines whether you must log in first to view the menus. If required, you log in by selecting
alphanumeric characters by scrolling through a list until you select the correct character.
The HMI module includes four LEDs to provide status information. Units with the display include
four infrared (IR) buttons for operator interaction.
To conserve power the HMI module enters sleep mode after a period of inactivity. Sleep mode
disables Wi-Fi communication. In FBxConnect, you can configure the number of minutes of
inactivity triggering sleep mode through the LCD Sleep Time parameter. Setting this parameter to
0 disables sleep mode which keeps the HMI module on but uses significantly more power.
Introduction
Type

Serial communications

▪
Software-selectable for RS-232,
▪
RS-422, or RS-485 operation
▪ 4-wire
▪ Serial communications
Software-selectable for RS-232, or
▪
RS-485 operation
2-wire
▪
Serial communications
▪
▪ Software-selectable for RS-232, or
RS-485 operation
▪ 2-wire
Emerson FB2100 Flow Computer Instruction Manual
Use
RS-232, RS-422, or RS-485 communication to
host or other devices. 4-wire used with external
radio.
RS-232 or RS-485 communication to host or
other devices.
RS-232 or RS-485 communication to host or
other devices.
D301783X012
March 2019
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