Mitsubishi Electric MELSEC iQ-R Series User Manual page 51

Execution timing for mode switching request signal (Y2/Y9) or UINI instruction
It is assumed that the protocol setting data written to the flash ROM is normal, or the protocol setting data is not written to the
flash ROM.
■Execution timing for mode switching request signal (Y2/Y9)
Communication protocol before change:CH1 and CH2 are other than the predefined protocol mode.
Communication protocol after change:CH1 or CH2 is the predefined protocol mode.
Mode switching request
(Y2/Y9)
Mode switching in progress
(X6/XD)
OFF
Predefined protocol
ready
(X1D)
CH1 and CH2 are other
than
predefined protocol mode
Communication protocol before change:CH1 or CH2 is the predefined protocol mode.
Communication protocol after change:CH1 or CH2 is the predefined protocol mode.
Mode switching
request
(Y2/Y9)
Mode switching in
progress
(X6/XD)
ON
Predefined protocol
ready
(X1D)
CH1 or CH2 is the predefined
protocol mode
Communication protocol before change:CH1 or CH2 is the predefined protocol mode.
Communication protocol after change:CH1 and CH2 are other than the predefined protocol mode.
Mode switching
request
(Y2/Y9)
Mode switching in
progress
(X6/XD)
ON
Predefined protocol
ready
(X1D)
CH1 or CH2 is the predefined
protocol mode
ON
CH1 or CH2 is the predefined
protocol mode
ON
CH1 or CH2 is the predefined
protocol mode
OFF
CH1 and CH2 are other
than
predefined protocol mode
2 DATA COMMUNICATION USING PREDEFINED PROTOCOL
2.4 Execution Condition of Predefined Protocol Communication
2
49