Mitsubishi Electric MELSEC iQ-RJ71C24-R4 - Page 372

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18 DATA COMMUNICATIONS BETWEEN TARGET DEVICE AND CPU MODULE IN M:N BASIS
18.2 Arrangement for Interlock among Target Devices
Different message structure from control procedure format frame
■Change the head data of each message to other arbitrary data.
• When format 1, format 2, or format 4 is selected for communication using ASCII code, change ENQ (05H).
■Use arbitrary data array after the head data of each message according to the user
specifications.
Ex.
For the message structure for general report to all of the other devices except the CPU module station, use an
unused station number or a massage structure different from the C24 control procedure format.
(1C)
31H 43H
(1B)
31H 42H
(ZZ)
5AH 5AH
(CD)
43H 44H32H
(2)
3BH
(;)
(1C) (1B)
3AH
(:)
Head data
Arbitrary contents
Transmission destination station No.
Transmission source station No.
Command
Message wait
Sum check code
Target
device 1
(station No.
1BH)
Transmission destination station No. Transmission source station No.
Target
device 2
(station No.
1CH)
Arbitrary contents
Head data