Siemens CP 1515 User Manual page 272

The number of frames requested by higher level protocols that are to
be transmitted to a Non-Unicast address (i.e. a subnetwork broadcast
or subnetwork Multicast address). This number includes the frames
that were discarded or not sent.
See also: RLM Manager, Monitoring, Remote Statistics
The number of packets that were not received properly as a result of a
collision, due to multiple stations trying to send packets over the
medium simultaneously.
See also: RLM Manager, Monitoring, Remote Statistics
DHCP is a Microsoft proprietary extension to the existing bootstrap
protocol (BOOTP). DHCP enables a LAN administrator to have a
network server configure workstations with an IP address dynamically
without further intervention.
272 Industrial Ethernet Wireless LAN RLM Manager, CP 1515 Manager
C79000-G8976-C171-01