2.8 Communications with an OMRON PLC (FINS Communications Service)
Using the MSG-SNDE Function with the MP3000 as the Master
2-220
Starting Communications
Use the following procedure to write the data in the hold registers in the MP3000 to the I/O bits in the
CPU Unit of the OMRON PLC.
1. Start the message receive operation on the OMRON PLC.
The system will automatically start the message reception operation. No further operation is required.
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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