TN – Instruction for Updating NX with SD Card

Summary/Issue Description

This Tech Note provides direction on how to make revisions to an existing program using an Offline Sysmac Studio and an SD Card

Root Cause

It is possible to use Sysmac Studio – Tools to Import and Export directly to/from an SD Card, and then using the SD Card, to transfer that project to/from a Sysmac Controller in Program Mode

Solution

Prepare by using Sysmac Studio to create an application and transfer to the controller

Sysmac Studio to Program Mode

Actual Process:

Backup existing to SD Card:

Set Dip Switches (OFF OFF ON OFF)

Power up the PLC

Insert SD card for backup

Verify SD Card carries the program using manual SD card technique (OFF OFF OFF OFF)

Turn OFF SD Power on controller

Remove SD Card

Using Sysmac Studio – Tools/Import the SD card program

In Sysmac Studio, make revisions to create Rev B

Sysmac Studio – Tools/export to autobackup folder of SD card

Turn off power to Controller

Set Dipswitches to read the program from the SD card (Auto Transfer = OFF OFF ON ON)

Insert SD card with RevB 

Power up the controller and wait for RevB to upload

PLC should be in run mode

For testing - Using Sysmac Studio, verify that the controller program and retained variables are same as expected RevB

Date/Revision History

First review 9/29/2025 V1.0

Author:

Ed Gallagher – Technical Support Specialist

References

NX-series NX102 CPU Unit Hardware User's Manual 

NJ/NX-series CPU Unit Software User's Manual