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R-IN32 Series CC-Link Remote device station
9.3.2
Asynchronous Read Method
No
No
(see Section 9.4.1, Initial Setting Time → Normal Setting Time)
Figure 9.5 Asynchronous Read Method
R18UZ0056EJ0102
Dec. 28, 2018
Asynchronous read
method
Is there update data?
Yes
Is this the
first time reception has been
completed?
Yes
Timeout time setting change
Receive data read request set
Refresh data (RY and RWw)
error information and status
information
Receive data read request
reset
Complete
9. Sample Flowchart for CC-Link Version 1
· Confirm whether or not there is update data by reading
CCS_M3SDOK_RDRQ.DRDREQ (receive data update
presence information).
· Be sure to write "01" to byte address 81h (receive
data read request) before reading the data.
· Read CCS_M3ERR1_ERR2
For devices that check status information (master station
·
program status, etc.) , read CCS_M3MRST1_ST2 (M
status information ST1) as well. Execute HOLD/CLR
processing based on the status content.
Read: Read data in the order of RY RWw.
·
· Be sure to write "0" to
CCS_M3SDOK_RDRQ.DRDREQ (receive data read
request) after the data has been read.
R
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