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PLC Delta “Modbus RTU” Hitachi NE-S1 Tutorial

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Hello everyone, Detla DVP14SS2 PLC is one of the most commonly used PLCs. Compact size, available RS232/RS485 Port. and the ability to generate pulses to control the motor along with its very cheap price are its advantages.

Today will guide you to use PLC Delta DVP14SS2 to control Hitachi NE-S1 inverter via Modbus RTU communication (both have built-in RS485 port)

PLC Delta & Hitachi NE S1 “Connection Diagram”

Hitachi NE-S1 “Modbus RTU” Parameters Setting

In addition to the basic parameters of the inverter installed according to the motor (Frequency, current, voltage, etc.), in order for the Hitachi NES1 inverter to be able to communicate with Modbus RTU, they need to install additional “parameters as below table

We also need to switch “SW5 in RS485 Mode”

Hitachi NE S1 Registers Address Table

PLC Delta Modbus Example

+ Read / Write Auto Distribution

+ Frequency Setting Command

+ Motor Run / Stop Control

+ Forward / Reverse Control

+ VFD Reset Control

+ Data Monitoring Read

Video Tutorial


Related Software and Documents

>>> PLC Delta Programming Software Download
>>> Hitachi NE S1 Manual PDF Download

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