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CHAPTER 11 DATA COMMUNICATIONS USING THE PREDEFINED PROTOCOL
11
11.1 Data Communication Procedure
5. Write the protocol setting data to the flash ROM.
[Online] [Write to PLC...]
Select a target module and write the protocol setting
data to the flash ROM.
*1
*1 When the initial process is not completed, the protocol setting data cannot be written to the flash ROM. Before writing
the data, set the network parameters and check that the initial process is completed.
(The initial process completion can be checked using Initial normal completion signal (X19).)
● The following data cannot be read out because they are not written to the E71. However, when the protocols are
selected from the Predefined Protocol Library, the followings can be displayed.
• Manufacturer
• Packet Name
• Protocol Detailed Setting Type, Version, Explanation
• Packet Setting Element Name
● Module Selection using the Predefined Protocol Support Function is available only when "Not Specification" is set in the
Transfer Setup of GX Works2.
When other station is specified, the E71 specified in the Transfer Setup of GX Works2 becomes the target module.
6. Execute the protocol by using a dedicated
instruction.
Execute the protocol written to the flash ROM by using
the dedicated instruction (ECPRTCL instruction).
● Protocols can be executed only when the target connection is in the following status:
• When Open completion signal is on
• When "Predefined protocol" is set to Fixed Buffer Communication in the open setting
If the protocol is executed to the connection where the above conditions are not satisfied, the ECPRTCL instruction
ends abnormally.
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