Omron CP1L-EL20DR-D, Operation Manual

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Pulse Outputs Section 7-2
Equations
The INT function extracts an integer from the fraction. The non-integer
remainder is rounded.
Differences between Set Frequencies and Actual Frequencies
7-2-5 Origin Search and Origin Return Functions
The CP1L-EL/EM CPU Units have two functions that can be used to deter-
mine the machine origin for positioning.
1,2,3... 1. Origin Search
The ORG instruction outputs pulses to turn the motor according to the pat-
tern specified in the origin search parameters. As the motor turns, the ori-
gin search function determines the machine origin from the following 3
kinds of position input signals.
• Origin input signal
• Origin proximity input signal
• CW limit input signal and CCW limit input signal
Source clock frequency
Dividing ratio
(Clock frequency x 2) + Set frequency
Set frequency (Hz) x 2
Actual frequency (Hz) =
Dividing ratio = INT
• Source clock frequency: 16.4 MHz
Set frequency (kHz) Actual frequency (kHz)
99.696 to 100.000 100.000
99.093 to 99.696 99.393
98.498 to 99.093 98.795
: :
50.076 to 50.229 50.152
49.923 to 50.076 50.000
49.772 to 49.923 49.848
: :
20.012 to 20.036 20.024
19.987 to 20.012 20.000
19.963 to 19.987 19.975
: :
10.003 to 10.009 10.006
9.996 to 10.003 10.000
9.990 to 9.996 9.993
: :
5.000 to 5.002 5.001
4.999 to 5.000 5.000
4.997 to 4.999 4.998
: :
3.001 to 3.001 3.001
3.000 to 3.000 3.000
2.998 to 2.999 2.999