Remote-processing RPC-2350 Bedienungsanleitung PDF herunterladen (Seite 54)

CHAPTER 11 SOUND/TIMER OUTPUT

11-1

Figure 11-1 Sound/pulse output connector

Figure 10-2 Speaker interface

CHAPTER SYNOPSIS

 Uses and limitations of sound/timer output

 Connecting to a speaker

DESCRIPTION

SOUND/TIMER OUTP UT CH APTE R 11

Sound may be used to drive a speaker or generate square

wave pulses.

Sound timer and output line is used for other pur poses.

Do NOT use SOUN D when using any of the following:

RS-485 communication

512K RAM memory(installed)

512K Flash memory

RS-485 uses the same timer as sound. C PU addr ess line

A18 is used to address RAM and F lash or provide the

pulse output for SOUND.

SOUN D Syntax is:

SOUND frequency

frequency is from about 15 Hz to over 20,000 Hz.

Output is available only dur ing run tim e. It is shut off in

the immediate mode (i.e. Entering code.)

Frequency accuracy is dependent upon the CPU crystal

of 18.432 MHZ . The factor that determines frequency

accuracy and resolution is the basic timer frequency of

921.6 kHz. The timer is a 16 bit, meaning that there are

65,536 possible frequencies within the 921.6 KHz

window. What this means is that while you might

request a frequency, say 10,000 Hz, you will get

something else. This is especially true at higher

frequencies.

Sound output is available from J10-3. This output can

go to a speaker or the counter at J10.

CONNECTING TO A SPEAKER

Refer to figure 11-2 below for circuit connections to a

speaker. T he series resistor determines the volume. the

Capacitor sets the lower frequency limit. Generally,

values from 100 uF to 470 uF ar e adequate. The

speaker may be any value but those with 50 ohms or

greater produce higher db output.

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Remote-processing RPC-2350 Bedienungsanleitung Seite 54