Modbus TCP communication and configuration

2 posts in this topic

Dear sir,

i want sample program for modbus tcp for q series plc

Share this post

Link to post
Share on other sites

@MR.VK as @Gambit said you should register at first then go to Downloads -> Program Example and find for Modbus Example function.

After you login please go to these links

QJ71C24N Modbus RTU Master

QJ71C24N Modbus RTU Slave

QnUDE Modbus TCP Client/Server

But if this is new project I recommend that you should use QJ71MB91 for Modbus RTU and QJ71MT91 for Modbus TCP for easier configuration.

For QJ71MT91 you can config Modbus TCP by setting parameter as shown in this link at page 116 - 119 for Client(Master) (in GX Works 2 at Automatic_Communication_Parameter)  and at page 120 - 130 for Server(Slave) (in GX Works 2 at MODBUS_Device_Assignment_Parameter).

Edited by Wasan

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now