Centrica Modbus TCP Programmer's Manual - Page 3
Browse online or download pdf Programmer's Manual for Network Hardware Centrica Modbus TCP. Centrica Modbus TCP 14 pages.
Print PageIntroduction 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 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 slave.
This guide focuses on the new bridge stand-alone (Modbus TCP) operational mode. It is
supplementary to the
Gen 4 Bridge User Guide
reviewed prior to using this guide. We plan to merge these two guides in the future.
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 master device (typically a computer or PLC) connects to the bridge via local
area network (LAN) 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.
which covers basic bridge operations and should be
Figure 1: Network diagram