ModbusClientPresetCoils
Starting Address for the first (topmost) child preset coil value. The driver sequentially addresses any additional child preset coil values
relative to this slot. The driver always uses the Absolute Addressfor actual addressing, which is typically the same as the Starting Address, unless coils in the parent Modbus device are augmented with a base address.
Figure 17. ModbusClientPresetCoils properties
In this preset container you also specify whether individual child preset coil values are written to the Modbus slave upon any change, or only collectively when the Write action of the ModbusClientPresetCoils container is invoked.
You access these properties by expanding the Presets folder in the Nav tree and double-clicking the ModbusClientPresetCoils.
| Property | Value | Description |
|---|---|---|
| Starting Address | additional properties |
Specifies the address of the first holding register to write (prior to any offset address change as a result of using device-level Base Address), as a combination of:
|
| Absolute Starting Address | read-only | Differs from Data Address only if using the device Base Addresses. It is the sum of the Data Address value and the associated Base Address value (as configured in the parent Modbus device). This is the actual address that uses when writing the first register’s preset value. |
| Status | read-only | Displays the status of the container slot—can be fault if a previous write to a child preset register failed for some reason. |
| Write On Input Change | true or false (default)
|
Configures when to write a value to the register.
|
Actions
Two right-click actions on a Modbus Client Preset Coils container are as follows:
- Write
To write all the preset coil values currently in child ModbusClientPresetCoil components.
- Add Preset Coil Value
To add an additional child ModbusClientPresetCoil component, specifying its Boolean value in the popup window. The component is added to the end of the existing slot order.