1 FUNCTIONS
1.3 Communications Using the Predefined Protocol
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Data communication procedures
When the predefined protocol support function is used, data can be exchanged with the external device using the following
procedure.
1. Select, create or edit the protocol with the predefined protocol support function, and write the protocol setting data. (
Page 33 Creating the protocol setting data)
2. Set the module parameter. ( Page 39 Setting procedure)
3. Write the parameters to the CPU module, and check that initial processing of the Ethernet-equipped module completed
successfully. ('Initial status' (Un\G1900024.0): On)
4. Perform the open processing to establish a connection between the Ethernet-equipped module and external device.
( Page 378 TCP/IP Communications, UDP/IP Communications)
5. Execute the protocol with the dedicated instruction (SP.ECPRTCL instruction or GP.ECPRTCL instruction).
6. Close the connection when communication is finished.
The communication data code is binary code communication regardless of the selected settings.
Creating the protocol setting data
Use the predefined protocol support function to create the protocol setting data.
[Tool] [Predefined Protocol Support Function]
1. Select the module for which to create the protocol
setting data. Select the following items when using the
RnENCPU.
• CPU part: "Built-in Ethernet CPU"
• Network part: "Ethernet Module"
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