18 DATA COMMUNICATIONS BETWEEN TARGET DEVICE AND CPU MODULE IN M:N BASIS
18.3 Examples of Procedure for Data Communications with CPU Module
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*1 It is a station number for general report to all of the other devices.
*2 Command "ZZ" is a command for description purpose. Determine the command to transfer/obtain the line ownership at the user side.
• The other target devices check if the general report data was received.
If the data was received, the target device performs the processing .
If the data was not received, the next target device transmits general report data and obtains the line ownership and
performs the processing . The other target devices checks if the general report data has been received.
*2*1
(1F) (1C) (ZZ) (0A)(0)(;)
31H 46H 31H 43H 5AH 5AH 30H 41H30H3BH
(1CH)
Transmission
destination
station No.
Transmission
source
station No.
Command
Message wait
Sum check
code
Target device
that obtains the
line ownership
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