Effect On The Scan Time; Processing Time For Each Instruction - Mitsubishi Electric MELSEC-L Series User Manual

10.3

Effect on the Scan Time

Use the following formula to calculate the increase in scan time in data logging.
[Increase in the scan time]
KM1 + (N1 × KM2) + (N2 × Km3) [µs]
• N1: Number of settings
• N2: Device points of all internal user devices (total points of setting No.1 to No.10)
CPU module
L02CPU
L26CPU-BT
10.4

Processing Time for Each Instruction

The table below shows operation processing time values of the instructions that are explained in this manual. (
Page 145, CHAPTER 11)
For the operation processing time of LCPU, refer to the following.
MELSEC-Q/L Programming Manual (Common Instruction)
Category
Data logging instruction
144
KM1
63.0
42.0
Instruction
LOGTRG
LOGTRGR
KM2
50.0
47.0
Processing time (µs)
L02CPU
Minimum Maximum
117.500 117.900
24.400 24.700
KM3
0.45
0.29
L26CPU-BT
Minimum Maximum
93.400 93.800
19.200 19.500