Installing/Removing A Communications Module - Emerson FloBoss 107 Instruction Manual

FloBoss 107 Instruction Manual
5.2

Installing/Removing a Communications Module

Slot 1 Installing a communications module in slot 1 on the base unit activates
Slot 2 Installing a communications module in slot 2 on the base unit
5-4
LEDs display the A (transmit/receive+) and B (transmit/receive −)
signals for EIA-485 (RS-485) communications.
The FB107 has the capability to communicate with other devices using
ROC or Modbus protocols. The firmware can automatically detect the
two protocols (ROC or Modbus) at baud rates of up to 115.2 Kbps.
ROC protocol supports serial communications to local or remote
devices, such as a host computer.
An FB107 can act as a Modbus host or slave device using Remote
Terminal Unit (RTU) or American Standard Code for Information
Interchange (ASCII) modes. This allows you to easily integrate the
FB107 into other systems. Extensions to the Modbus protocol allow the
retrieval of history, event, and alarm data in Electronic Flow Metering
(EFM) Measurement applications.
The LOI port only supports ROC or Modbus slave protocols.
Note:
All FB107 modules are designed for ease of installation and removal.
Refer to Installing a Module, Removing a Module, and Wiring a Module
in Chapter 4, Inputs/Outputs and RTD Inputs, for specific instructions.
You can install communications modules in slots 1 or 2 on the base unit,
which provides power and control signals to those modules.
COM3. COM2 is not affected; it still resides on the CPU. COM3 is
completely independent of any other communication port.
When you install a communications module in slot 1, you can
Note:
also install an I/O module in slot 7. This provides a full
complement of 42 I/O points and four communication ports.
disconnects the CPU module's COM2 and redirects COM2 to the
newly installed communication module. COM2 always exists.
When you install a communications module in slot 2, the
Note:
firmware redirects the CPU module's communication port
(COM2) to the type of module installed in slot 2. Configure
COM2 based on the type of communications module installed in
slot 2.
The hardware decides which signals to use depending on whether a
communication module is installed in slot 2. All other communication
ports are not affected.
Communications Issued Feb-07