Specifications

Optimizing Performance
EIO0000000051 6/2010 95
Connection Types and Protocols
The connection type and transport protocol employed depends upon the message
type and message protocol, as follows:
Connection- Overhead
Any message transmission includes overhead, which consumes network bandwidth
and processing time. The smaller the size of the data transmitted, the relatively
greater the portion of the message allocated to overhead.
Consequently, it makes sense to design your I/O messaging by consolidating data
from multiple I/O devices—with similar processing capabilities and performance
needs—and transmitting it through a single adapter. This design conserves
bandwidth, saves network resources, and improves performance.
Message Type Message Protocol Connection Type Connection Protocol
Explicit EtherNet/IP CIP, TCP TCP/IP
Modbus TCP TCP TCP/IP
FTP TCP TCP/IP
HTML (web) TCP TCP/IP
SMTP TCP TCP/IP
SNMP N/A UDP/IP
SNTP N/A UDP/IP
DHCP N/A UDP/IP
BOOTP N/A UDP/IP
Implicit EtherNet/IP CIP, TCP UDP/IP
Modbus TCP TCP TCP/IP
IGMP N/A IP
RSTP N/A Ethernet