Eagle Tech 72A/C Bedienungsanleitung PDF herunterladen (Seite 28)

SERIAL Digital I/O Series User Manual Eagle Technology - Data Acquisition

Counters

The counter sub-system is supported by functions to Write, Read, Configure and controlling

the gate. There are 6 counters. Counter-timers are only supported by the SRL24C, SRL 48C,

SRL 72C and SRL 96C. The table below shows the relation of the counters and their software

assigned numbers.

Counter Assigned Number Description

CT0 0 Counter 0

CT1 1 Counter 1

CT2 2 Counter 2

CT3 3 Counter 3

CT4 4 Counter 4

CT5 5 Counter 5

Table 4-2 Counter Assignment

Label1

SRL48C/SRL96C Counter-Timer Architecture

Figure 4-2 Counter-Timer Architecture

Writing the initial counter value

A single call is necessary to write a counter’s initial load value.

API-CALL

Long EDRE_CTWrite(ulng Sn, ulng Ct, ulng Value)

The serial number, counter-number, and a value must be passed by the calling function. A

return code will indicate if any errors occurred.

ACTIVEX CALL

Long EDRECTX.Write(long Port, ulng Value)

The counter-number and a value must be passed by the calling function. A return code will

indicate if any errors occurred.

Reading the counter value

A single call is necessary to read a counter.

API-CALL

Long EDRE_CTRead(ulng Sn, ulng Ct, pulng Value)

The serial number, counter-number, and a reference parameter must be passed by the calling

function. A return code will indicate if any errors occurred.

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Eagle Tech 72A/C Bedienungsanleitung Seite 28