Using The Modbus Protocol; Introduction - ICP DAS USA ET-6000 Series User Manual

ГК Атлант Инжиниринг – официальный представитель в РФ и СНГ
Chapter 4 How to access ET-6000?


4.2

Using the Modbus protocol

4.2.1

Introduction

MODBUS is a master-slave bus system in which only one device (the master) actively
starts a transaction (query). The passive device (the slave) then sends a response. Most
SCADA Supervisor Control And Data Acuisition and HMI software can easily integrate
serial devices via the Modbus protocol, such as Citect, ICONICS, iFIX, InduSoft, Intouch,
Entivity Studio, Entivity Live, Entivity VLC, Trace Mode, Wizcon, Wonderware, etc.
The ET-6000 controller includes the Modbus/TCP protocol, which is a variation of the
Modbus protocol that was developed in 1999 to allow the Internet community to access
Ethernet devices.
Modbus address for Modbus/TCP client access.
The ET-6000 series supports multi-operation modes related to the Modbus applications.
Refer to Appendix C: Modbus Protocol to select the appropriate mode for your
requirements.
ET-6000 User's Manual, 2007, Sep., V1.1,
+7(495)109-02-08 sales@bbrc.ru www.bbrc.ru
6PH-002-11----------119