MELSOFT Library
Sample ladder for MODBUS communications (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 |
|---|
| Engineering tool | File name | Size | Last update | Version |
|---|---|---|---|---|
| GX Works2 | gw_ld-fx3_modbus_v100a_e.zip | 2,354,388 bytes | Nov. 30, 2016 | 1.00A |
| GX Developer | gd_ld-fx3_modbus_v100a_e.zip | 1,652,848 bytes | Nov. 30, 2016 | 1.00A |
| Relevant manual | Type |
|---|---|
| JY997D72001-A | MELSEC-F FX3 Series MODBUS Communication Sample Ladder Reference Manual |
| Project name | Function name | Description | Ver. |
|---|---|---|---|
| 01_LD-FX3U_Modbus_V100A_E | Inverter operation monitoring function | Reads the operation status of the FREQROL-800-series inverter to the PLC. | 1.00A |
| 02_LD-FX3U_Modbus_V100A_E | Inverter operation control function | Writes the control value necessary for operating the FREQROL-800-series inverter into the inverter from the PLC. | 1.00A |
| 03_LD-FX3U_Modbus_V100A_E | Inverter parameter read function | Reads the FREQROL-800-series inverter parameters to the PLC. | 1.00A |
| 04_LD-FX3U_Modbus_V100A_E | Inverter parameter write function | Writes the FREQROL-800-series inverter parameter values from the PLC. | 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.
