2.10 Communications with a JTEKT PLC (TOYOPUC Protocol)
Using the MSG-SNDE Function with the MP3000 as the Master
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6. Create a ladder program for receive data from the receive data area in the file memory on net-
work connection 5.
Note: Refer to the following manual for information on ladder programming using the SPR instruction.
Manual for the 2PORT-EFR Module from JTEKT Corporation
This concludes the setup.
Starting Communications
Use the following procedure to write the data in the hold registers in the MP3000 to the file memory of the
JTEKT PLC.
1. Start the JTEKT PLC in TCP Destination - Specified Passive mode.
2. Turn ON the power to the MP3000 to start transmitting messages.
The ladder program example is designed to turn ON the Execute Bit (DB000200) in the message send func-
tion after six seconds has elapsed from when the low-speed scan (or high-speed scan) starts. Thereafter, the
message send function is executed every second by alternating the Execute Bit (DB000200) between OFF
and ON each time the message send function completes execution normally or with an error.
Note: The MP3000 will establish the TCP connection when it starts execution of the MSG-SNDE function.
SB00003A: Turns ON 5 seconds after start.
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