Modbus IO | V3-manual

Modbus IO has two types, TCP device and RTU Device.

From the controller version GF02060300, up to 100 Modbus IOs can be added regardless of device, IP, port number.

Add a Modbus Monitoring Item

To add a Modbus monitoring item, select a tool item (TCP device or RTU Device) and click the Add Item button on the toolbar or select Add Item on the context menu.

Then, the Modbus Setting window appears on the right side.

Modbus Device information includes:

Device IP Address and Port
I/O Type

IO Type	Read/Write Property	Value Range
Discrete Input	Read Only	0~1 (1 Bit)
Coil	Read / Write	0~1 (1 Bit)
Input Register	Read Only	0~65535 (2 Bytes)
Holding Register	Read /Write	0~65535 (2 Bytes)

I/O Index

If setting is done, click the Confirm button.

When a new item is added to the tree, select the item and click the Apply Item button on the toolbar or select Apply Item on the context menu.

If the setting item is successfully applied, the value of the item is displayed in the Input Value field in the tree.

Remove a Modbus Monitoring Item

To remove monitoring items, select an item node in the tree and click the Delete Item button on the toolbar or select Delete Item on the context menu.

Then, the selected items are removed from the tree and controller.