The Modbus IOScanner is used to simplify exchanges with Modbus slave devices.
To add a Modbus IOScanner on a PCI Expansion Module, select the Modbus IOScanner in the Hardware Catalog, drag it to the Devices tree, and drop it on one of the highlighted nodes.
For more information on adding a device to your project, refer to:
• Using the Drag-and-drop Method
• Using the Contextual Menu or Plus Button
Modbus IOScanner Configuration
To configure a Modbus IOScanner on a PCI Expansion Module, proceed as follows:
|
Step |
Action |
|---|---|
|
1 |
In the Devices tree, double-click Modbus IOScanner. Result: The configuration window is displayed. |
Set the parameters as described in the following table:
|
Element |
Description |
|---|---|
|
Transmission Mode |
The transmission mode to use is RTU. RTU uses binary coding and CRC error-checking (8 data bits). This parameter must be identical for each Modbus device on the link. |
|
Response Timeout (ms) |
Timeout used in the exchanges |
|
Time between frames (ms) |
Time to avoid bus-collision This parameter must be identical for each Modbus device on the link. |
