APPENDICES APPENDIX
Appendix 6 Processing Time
543
A
Appendix 6 Processing Time
Processing time for nonprocedural protocol (guideline)
The processing time for the Output and Input instructions can be estimated by the following formula.
Note, however, that the processing time may become longer depending on other communication functions (e.g.,
communication using the MC protocol) and special functions (e.g., ASCII-binary conversion, transmission control) that are
used at the same time.
The value obtained from the following formula is considered to be the processing time taken for reception or transmission only
when CH1 only is used (RS-232 connection).
■OUTPUT instruction
Tp=St+(Dle/Cr1000+0.07)Ds+T1
*1 This stands for the time range of processing (Tp).
Tp
*1
: The time from the start of execution of the Output instruction to the End processing of the sequence scan at the completion of the Output
instruction execution (ms)
St : Scan time
Dle : Data length of 1 byte at data transmission (number of bits)
Cr : Communication rate (bps)
Ds : Number of bytes of send data
T1 : C24 T1=2.7
END
OUTPUT
Tp
Start of the Output instruction
execution
Start of the END processing of the scan at the
completion of the OUTPUT instruction execution
Step 0
Program
Transmission command
OUTPUT instruction
1 scan
OUTPUT instruction
complete device
C24
Transmission data
Target device
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