Counter - ETAS ES930.1 User Manual

ETAS
5.2.4

Counter

Measuring Procedure
In the application software, the type of events to be counted (edges or cycles)
for the event count can be selected for each digital input channel. All counter
parameters are freely configurable in the application software.
The signal at the measuring channel is counted independent of signals at other
measuring channels. The counter assigned to the measuring channel is config-
ured as an up-counter.
The ES930.1 can count edges with the following measuring procedures
according to the configuration in the application software:
• Count of edges when the input signal changes from inactive to active
state
• Count of edges when the input signal changes from active to inactive
state
• Count of edges when the input signal changes from inactive to active
state and from active to inactive state
• Count of cycles
The following operating modes of the counter can be selected in the applica-
tion software:
• Resetting the counter after every sampling point or
• Counter in free-running mode. The counter counts from the start of the
measurement without being reset during the measurement. If the count-
ing scope (overflow) is reached and the measurement is not yet finished,
the counter starts counting again from the start. The overflow of the
counter occurs after 2
NOTE
For rapid prototyping applications, select the operating mode "Reset counter
after every sampling point".
The following figures show examples for counting procedures.
ES930.1 - User Guide
Digital Input Channels ("DI" Connection)
32
signal transitions to be counted.
38