IDEC FL1E-H12RCA User Manual page 337

Explanation
The inverted marker block changes its output signal at each
program execution. Thus, one logic level (high or low) width
is exactly equivalent to the length of one cycle. Hence, a
period lasts 2 cycles.
The frequency trigger indicates the ratio of periods per 2
seconds, which results in the ratio of cycles per second.
IDEC SmartRelay Manual
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
Edge transition of the inverted marker at each
circuit program execution
Cycle time 1 period = 1 pulse = 2 cycles
Period
Determining the cycle time
323