Introduction and overview
This document covers the operation and interface definition of the Panoramic Power Bridge when
working in the stand-alone mode. In this mode, the Bridge implements a Modbus TCP/RTU
protocol which sends sensor’s current readings to a local server. The local server acts as a Modbus
master server and the Bridge acts as a Modbus TCP/RTU slave.
This guide focuses on the new Bridge stand-alone (Modbus TCP/RTU) operational mode. It is
supplementary to the Gen 4+ Bridge Manual which covers basic Bridge operations and should be
reviewed prior to using this guide. Version 476 adds support for PAN42 sensors (up to 3) and for
Modbus RTU (RS485) connection.
The image below depicts a typical network diagram for a Bridge operating in the stand-alone
mode:
• Sensors transmit readings once every 10 seconds to the Bridge via proprietary wireless
communications.
• For each configured sensor, the Bridge stores the last received measurement in memory. It
will be stored until overridden by a new measurement from the same sensor or until the
Bridge resets.
• A Modbus TCP/RTU master device (typically a computer or PLC) connects to the Bridge via
local area network (LAN) or RS485 cable and polls the Bridges for sensor data.
• The Modbus master device can connect to multiple Bridges, each of them receiving
multiple sensors.
• Bridge configuration is done via the Bridge’s built in web server, using the web browser of
a laptop connected in the LAN.
Figure 1: Network diagram
To Next Page
