IDEC High Performance Series - Manual (Page 636)

Chapter 5
618
External Device Setup Manual
1.6 Modbus TCP Server
1.6.1 Overview of the Modbus TCP Server Communication
1. Overview
The Modbus TCP Server communication performs that PC or PLC (refers to as an external device) can read and write the MICRO/I or Touch com-
munication devices via the Ethernet.
The read/write of a device is performed using the Modbus TCP protocol. Up to 4 external devices can be connected to the MICRO/I or Touch at
same time.
2. Operation of the Communication
The external device is capable of reading/writing to the MICRO/I or Touch communication devices. It is also possible to read or write communica-
tion devices from the MICRO/I or Touch.
3. Read/Write from the External Device
The external device is capable of reading or writing the data in the communication devices at the any timing.
Modbus TCP communication is the open protocol. For detail information, visit the web site at http://www.modbus.org/.