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MELSEC-
A
5 PRELIMINARY INFORMATION
(3) Create a program that detects the R2 data link state and establishes an interlock.
R2 data link normal
R2 data link error
Read R2 data link state
Program for R2 error
(4) Create a program that initializes the R2. (Refer to section 5.5)
(5) Create a program that transmits data to the external device. (Refer to sections
6.3.1 and 6.4.1.)
(6) Create a program that receives data from the external device. (Refer to sections
6.3.2 and 6.4.2.)
(7) Create the following program to process the R2 error (reset the error).
Transmission error complete (RXn1)
Reception error read request (RXn3)
Initialization error complete (RXn5)
EEPROM function error complete (RXn8)
Error reset
Process program for error
Set the error
occurrence flag
Reset the error
occurrence flag
Error reset
R2
normal
Required when using
transmission/reception
buffer