Sfc Program Switching - Mitsubishi Electric MELSEC iQ-R Series User Manual

SFC program switching

This section describes the processing time required to switch the SFC program from the standby status to the scan execution
type.
• Switching processing time [s] = (Number of blocks created  Km) + (Number of steps created  Kn) + (SFC program
capacity  Kp) + Kq
Constant Constant value
Km 7.90
Kn 1.55
Kp 0.21
Kq 2500
*1 For the firmware version "12" or earlier, the values are as follows.
 R08PCPU, R16PCPU, R32PCPU: Km = 3.97, Kn = 0.41, Kp = 0.39
 R120PCPU: Km = 3.97, Kn = 0.41, Kp = 0.32
When the SFC program capacity is the following models or conditions, the processing time required to switch the SFC
program from the standby status to the scan execution type will be fixed.
Model
R08PCPU, R16PCPU, R32PCPU
R120PCPU
When the SFC information device is set, the processing time required to switch the SFC program from the standby status to
the scan execution type will become longer.
*1
*1
*1
Condition
28K steps or less
48K steps or less
Processing time (constant value)
14ms
18ms
APPX
Appendix 7 Processing Time
A
723