Not all Ethernet network devices are SNMP managed. To help monitor any system from within your HMI, the Ping driver automatically generates OPC tags for each unmanaged device defined. These "heartbeat" and "response time" tags provide a standardized and reliable way to monitor all devices in the Ethernet network.
The Ping driver leverages the Internet Control Message Protocol (ICMP) to determine whether a defined IP or host address is reachable in the IP control network. Use the Ping driver to incorporate device availability status into your automation applications when target devices are not SNMP managed.