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APPENDICES APPENDIX
Appendix 6 Processing Time
■INPUT instruction
Tp = Sr+0.09 Dr+T2
*1 This indicates the range of processing time (Tp).
*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)
Tp
*1
: 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
END
INPUT
Tp
2ms(*2)
(*3)
Start of the INPUT
instruction execution
Start of the END processing of the scan at the
completion of the INPUT instruction execution
Step 0
Program
Reception data
read request (X3)
INPUT instruction
1 scan
INPUT instruction
complete device
C24
Receive data
Target device
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