| Overload | Description | 
|---|---|
| FUNC_PLC_SUBNETMASK | Subnet mask # 20446. | 
| Overload | Description | 
|---|---|
| FUNC_PLC_SUBNETMASK | Subnet mask # 20446. | 
The subnet mask defines the splitting of a bus ID (IP address within an Ethernet-based bus system) into a network component and a device / station component. The subnet mask can be used to specify how many devices can be addressed within a subnet.