Lenze EPM−T9XX Modular system - Manual (Page 402)

Parameterising 1xcounter/16xdigital input module
Measuring the frequency (mode 3)
12
Parameter setting via system bus (CAN) / CANopen
12.6
12.6.6
L
12.6−12 EDSPM−TXXX−9.0−11/2009
f + f
ref
@ m
n
f Frequency of signal A
f
ref
Reference frequency
m Count value
n Starting value
Example: Reference frequency f
ref
= 1 MHz, starting value n = 1,000,000, count
value m = 10,000
f + 1 MHz @ 10000
1000000
+ 10 kHz
epm−t183
Fig. 12.6−12 Counter access of 1xcounter/16xdigital input in the mode 3
epm−t185
Fig. 12.6−13 Signal characteristic of 1xcounter/16xdigital input in the mode 3
Frequency calculation
Counter access
Signal characteristic