Counter Clock Source; Counter Internal Clock - Advantech UNO-3072A User Manual

2.7.5 Counter Clock Source

There are two clock sources available for the user counters by setting
counter clock control bits - CTR0CLKSet and CTR1CLKSet.
Table 2.9: Counter Clock Source Control Bit
CTR0CLKSet
CTR1CLKSet

2.7.6 Counter Internal Clock

There are four frequency options to choose according to applications, and
it's set by internal clock control bits - S0 and S1.
Table 2.10: Counter Internal Clock Control Bit
S1
0
0
1
1
0 Internal clock (default)
1 External clock from digital input 1 (DI1) channel
0 Internal clock (default)
1 External clock from digital input 3 (DI3) channel
S0
0
1
0
1
27
Time base
100 KHz (default)
10 KHz
1 KHz
100 Hz
Chapter 2