Mitsubishi Electric MELSEC iQ-R Series User Manual page 546

■INPUT instruction
Tp = Sr+0.09  Dr+T2
*1
Tp : Time from the start of the INPUT instruction execution to the start of End processing for the sequence scan at the completion of the INPUT
instruction execution (ms)
St : Scan time
Dr : Number of bytes of reception data
T2 : C24 T2=6.3
*1 This indicates the range of processing time (Tp).
Program
Reception data
read request (X3)
INPUT instruction
INPUT instruction
complete device
C24
Target device
*2 It indicates the time from when C24 receives data from the line to when the 'CH1 reception data read request' (X3) turns ON when only
read processing of 30 bytes data is performed with one of the channels on C24 used.
*3 When DX3 (direct mode) is used, C24 is accessed at the time of the instruction execution with the program.
DX3 (direct mode) speeds up reading input compared to X3 (refresh mode).
For differences between the modes, refer to the following manual.
MELSEC iQ-R CPU Module User's Manual (Application)
APPENDICES APPENDIX
544
Appendix 6 Processing Time
Start of the INPUT
instruction execution
END
Step 0
(*3)
Receive data
2ms(*2)
Start of the END processing of the scan at the
completion of the INPUT instruction execution
Tp
INPUT
1 scan