Saia-Burgess Controls AG
User Manual PCD2.M4x60 │
Document 27-648
│ Edition ENG06 │ 2020-10-21
Usage as CPU onboard Counter
Interrupts
10-3
10
10.3
Usage as CPU onboard Counter
Terminal block X8
25
24
23
22
21
20
DI_IX3
DI_IX2
DI_IX1
DI_IX0
terminal block
X8
Source operation
Interrupt-
inputs
Counter 1
Counter 0
10.3.1 Introduction
The four Interrupt Inputs can be used as two independent On board Counters.
This On board Counter is counting independent of the CPU Cycle.
As soon as “Counter” is selected in the Device Configurator for the interrupt con
-
nections, two interrupts are reserved for each of the two counters (clearly visible in
the Device Configurator (red frame, second counter greyed out) and in the drawing
above at the pin assignment counter 0 and 1).
¾
The onboard Counter is able to count bidirectional.
¾
The Overflow handling is configurable. If a configurable reference value is
reached, it is possible to call a Process Alarm XOB.
¾
The max counter Frequency is limited to 1 kHz.
