I-8124W DeviceNet Master API functions User’s Manual (V 1.6) 2021/10/04
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The firmware of I-8124W provides the DeviceNet Master mechanism to
communicate with slave devices by the Predefined Master/Slave Connection
Set and UCMM Connection Set. In the DeviceNet communication protocol can
be clarify as two forms: Explicit Message and I/O Message. Here, we only
provide one explicit message connection and 4 I/O connections as depicted in
Figure 1.4.
Figure 1.4 DeviceNet Messaging
The DeviceNet Communication Protocol is based on the concept of
connections method. Master should create connections with slave devices
based on the command of exchanging information and I/O data. To establish
the master control mechanism, there are only 4 steps to be followed. Figure
1.5 demonstrates the basic process for the DeviceNet master communication.
Each step is described in below:
Figure 1.5 Four steps to establish connection
