the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz)
"The signal was measured at exactly 50 cps, indicating fifty complete cycles per second."
Initialism of characters per second.
"The server crashed due to an overwhelming influx of cps from a botnet attack."
Initialism of character(s) per second.
plural of CP
In plain English: CPS stands for calls per second, which is how many times something happens every single second.
"The new machine processes documents at over five hundred cps, saving hours every day."