Yaskawa JAPMC-CM2304-E - Manual (Page 16)

1.3 EtherNet/IP (CIP) Communication Types
1.3.1 Explicit Message Communication
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1.3 EtherNet/IP (CIP) Communication Types
There are two kinds of CIP communication: Explicit message communication and I/O communication.
1.3.1 Explicit Message Communication
Explicit messages are used in general message communication between the client and the server (peer-to-peer commu-
nication).
• Two types of message communication is available, namely, connected message communication and unconnected
message communication.
• An explicit message contains the communication destination object information and the request details.
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Major Applications
Program uploading/downloading, device setting, data collection, diagnosing, etc.
1.3.2 I/O Communication
I/O communication is used for time-critical control data communication.
• Efficient communication is possible since only data is sent/received in I/O communication.
• The meaning of the data is pre-defined for each connection (communication target application object).
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Major Applications
Transmission of control data for individual devices, etc.