Microsoft Advantech UNO-3074 Manual Do Utilizador
UNO-3074 User Manual
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2.7.4 32-bit Counter Function Block (CTR32Set=1)
Figure 2.10: 32-bit Counter Function Block
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.
counter clock control bits - CTR0CLKSet and 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.
it’s set by internal clock control bits - S0 and S1.
2.7.7 Counter Gate Source
The gate sources you select determine what kind of gate input signal to
enable your counter/timer when receiving clock input. There are two gate
sources available for the user counters by setting gate source control bits -
CTR0GateSet and CTR1GateSet.
enable your counter/timer when receiving clock input. There are two gate
sources available for the user counters by setting gate source control bits -
CTR0GateSet and CTR1GateSet.
Table 2.12: Counter Clock Source Control Bit
CTR0CLKSet
0
Internal clock (default)
1
External clock from digital input 1 (DI1) channel
CTR1CLKSet
0
Internal clock (default)
1
External clock from digital input 3 (DI3) channel
Table 2.13: Counter Internal Clock Control Bit
S1
S0
Time base
0
0
100 KHz (default)
0
1
10 KHz
1
0
1 KHz
1
1
100 Hz