272
IDEC SmartRelay Manual
B Determining the cycle time
The program cycle is the complete execution of the circuit
program, that is, primarily the reading in of the inputs, the
processing of the circuit program and the subsequent read-
ing out of the outputs. The cycle time is the time required to
execute a circuit program once in full.
The time required for a program cycle can be determined us-
ing a short test program. This test program is created in
IDEC SmartRelay and returns a value during its execution in
parameter assignment mode from which the current cycle
time is derived.
Test program
1. Create the test program by linking an output to a fre-
quency trigger and connecting the trigger input with an
inverted marker.
2. Configure the frequency trigger as shown below. A pulse
is generated in each program cycle due to the inverted
marker. The trigger interval is set to 2 seconds.
Par
Qx
B1
M1
M1
M1
1
B2
Output Qx or other
marker Mx
Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com