MELSOFT Library
Program examples given in the user's manual - MODBUS communication edition (English version)
Remarks
- When using this sample ladder for a model which is not applicable to the provided project, change the programmable controller type with an engineering tool.
- When using a GX Developer project for an FX3S-series module, refer to "HIME-T-P-0118A Limitations and precautions when using FX3S Series with GX Developer".
- The provided project does not guarantee the operations on the customer's equipment. Check the settings such as device assignments and parameters according to the specifications on the customer's equipment before using the project.
| Applicable model | FX3U-485ADP-MB，FX3U-232ADP-MB |
|---|
| Engineering tool | File name | Size | Last update | Version |
|---|---|---|---|---|
| GX Works2 | gw_ld-fx3_modbus_ex_v100a_e.zip | 911,182 bytes | Nov. 30, 2016 | 1.00A |
| GX Developer | gd_ld-fx3_modbus_ex_v100a_e.zip | 242,742 bytes | Nov. 30, 2016 | 1.00A |
| Relevant manual | Type |
|---|---|
| JY997D71701-A | List of Projects with Program Examples given in MELSEC-F FX3 Series Manual |
| JY997D26201-G | FX3S/FX3G/FX3GC/FX3U/FX3UC SERIES USER'S MANUAL - MODBUS Serial Communication Edition |
| Project name | Function name | Description | Ver. |
|---|---|---|---|
| 01_LD-FX3U_MODBUS_Ex_V100A | MODBUS communication function | Maps up to eight PLC device ranges to the MODBUS Device Address range in a user defined order. | 1.00A |
| 02_LD-FX3U_MODBUS_Ex_V100A | MODBUS communication function | Example of program for coil read, hold register read, coil read, register write, and error process routine (master setting program) | 1.00A |
| 03_LD-FX3U_MODBUS_Ex_V100A | MODBUS communication function | Executes in the following order: coil read, hold register read, coil read, register write, and error process routine (master setting program) | 1.00A |
| 04_LD-FX3U_MODBUS_Ex_V100A | MODBUS communication function | Executes the communication parameter setting at the slave side. | 1.00A |
[How to extract the compressed file]
Copy the file to a folder.
The file is a compressed file in ZIP format.
Decompression method 1): For the OS with the ZIP-compatible decompression function
- Right-click the copied file.
- Select "Extract All...".
When "Extract All..." is not displayed, follow the decompression method 2). - Specify the location of the extracted file, and click the "Extract" button to start the decompression.
Decompression method 2): For the OS without the ZIP-compatible decompression function
- If not having the ZIP-compatible decompression tool, acquire the decompressing tool.
- Decompress the file using the decompression tool.
* Use the decompression tool at users' own risk.
[Precautions for using the sample ladder]
- Before applying the sample ladder to a system, check sufficiently if no problem occurs in the control of the system.
