
MODBUS Communication - Introduction
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TI 12J06J01-00EN-P
Introduction
This document describes MODBUS communication by the Optical Dissolved Oxygen (DO) sensor,
model DO71 and DO72, for a basic user.
Before communication using the MODBUS protocol, refer to the User’s Manual of the Optical
Dissolved Oxygen sensors, model DO71 and model DO72 (IM 12J06J01-00EN-P) for details of
the parameters and connections.
Latest revision of the
User’s Manual can be downloaded from the website:
https://www.yokogawa.com/solutions/products-platforms/process-analyzers/liquid-
analyzers/#Downloads
You can use the QR-code for quick-access.
NOTE
No part of the Technical Information may be transferred or reproduced without prior written
consent from YOKOGAWA.
YOKOGAWA reserves the right to make improvements in the Technical Information and product
at any time, without notice or obligation.