Ethernet/Ip™ Transmission Types; Explicit Messaging, Exchange Of Information's; Implicit Messaging, Exchange Of I/O Data - TR-Electronic C 115 Serie Gesamt-Bedienungsanleitung

3.2 EtherNet/IP™ transmission types
The EtherNet/IP™ communication protocol CIP™ above TCP and UDP is used for
following purposes:
1. Control
2. Configuration
3. and Monitoring or Collection of data
The control portion of CIP™ is used for real-time I/O messaging or Implicit
Messaging. The information portion of CIP™ is used for message exchange or
Explicit Messaging.
Figure 2:TCP/IP Stack Handling

3.2.1 Explicit Messaging, exchange of information's

Non-time critical data transfers, typically large packet size. Information data
exchanges are short-lived explicit communication relationships Unconnected
Messaging
Messaging between one originator and one target device. Information data packets
use the TCP/IP protocol about the port 44818 and take advantage of the TCP data
handling features.

3.2.2 Implicit Messaging, exchange of I/O data

Time-critical data transfers, typically smaller packet size. I/O data exchanges are long-
term implicit connections between one originator and any number of target devices.
I/O data packets use the UDP/IP protocol about the port 2222 and take advantage of
high-speed throughput capability of UDP. This type of data exchange is used for the
communication with I/O devices, but also for the real time locking between controls.
Printed in the Federal Republic of Germany
01/27/2022
or long-lived explicit
TR-ECE-BA-DGB-0102 v10
communication relationships
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Connected
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