Mitsubishi Electric MELSEC iQ-R16MTCPU Programming Manual page 176

■Send and receive timing
The send and receive timing of transient send and receive data is shown below.
• Normal timing
Command send request (Start device+0)
Response data (Start device+8 to 11)
Data valid bit
(bF)
Transient request
start(b1)
Transient
Transient
status
receiving(b2)
(Start device+6)
Transient reception
completed normally
(b3)
Transient command
processing
completion wait(b0)
• Abnormal timing
Command send request (Start device+0)
Response data (Start device+8 to 11)
Data valid bit
(bF)
Transient request
start(b1)
Transient
Transient
status
receiving(b2)
(Start device+6)
Transient reception
completed normally
(b3)
Transient command
processing
completion wait(b0)
• When disconnected during continuous send
Command send request (Start device+0)
Response data (Start device+8 to 11)
Data valid bit
(bF)
Transient request
start(b1)
Transient
Transient
status
receiving(b2)
(Start device+6)
Transient reception
completed normally
(b3)
Transient command
processing
completion wait(b0)
• Response data is only updated when normal receive is completed.
• When an error occurs with the data valid bit (bF), it is kept until normal receive is completed.
5 FUNCTIONS USED WITH SSCNET COMMUNICATION
174
5.2 Optional Data Monitor Function
Send and receive
of all items
Send start
Send and receive
of all items
Send start
Clear to 0
Send start
Disconnection