Chapter 4 Programming; Program Example Of Ucmm Message Communications; System Configuration Example - Mitsubishi Electric MELSEC iQ-R Series User Manual

4
PROGRAMMING
This chapter describes program examples of UCMM message communications and PING tests.
For program examples of Class1 instance communications and Class1 tag communications, refer to the following.
 MELSEC iQ-R EtherNet/IP Network Interface Module User's Manual (Startup)
4.1
Program Example of UCMM Message
Communications
This section provides a program example using the client function of UCMM message communications.

System configuration example

The following system configuration is used to explain the program example of UCMM message communications.
System configuration
GX Works3
(1) Programmable controller system (scanner)
• Power supply module: R61P
• CPU module: R04CPU
• EtherNet/IP network interface module (client): RJ71EIP91 (start I/O number: 0000H to 001FH, IP address: 192.168.3.51)
(2) Programmable controller system (adapter)
• Power supply module: R61P
• CPU module: R04CPU
• EtherNet/IP network interface module (server): RJ71EIP91 (start I/O number: 0000H to 001FH, IP address: 192.168.3.2)
Communication content
The RJ71EIP91 on the scanner side is set to the client and the RJ71EIP91 on the adapter side is set to the server. Then,
command requests are sent from the client to the server.
Command requests use the buffer memory of the RJ71EIP91 on the scanner side to operate the program.
After receiving a command request, the server executes the command processing and returns a command response to the
client.
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4.1 Program Example of UCMM Message Communications

(1) (2)