Elmo Computer Hardware 1.1 User Manual download pdf (Page 67)

A.7 I/Os

The Guitar has: 6 Digital Inputs 4 Digital Outputs 1 Analog Input

A.7.1 Digital Input Interfaces

Feature Details Schematic Diagram

Type of input

 Optically isolated

 Each input has its own return

Input current

for all inputs

Iin = 2.4 mA @ Vin = 5 V

High-level

input voltage

2.5 V < Vin < 10 V, 5 V typical

Low-level

input voltage

0 V < Vin < 1 V

Minimum

pulse width

> 4 x TS, where TS is sampling time

Execution time

(all inputs):

the time from

application of

voltage on

input until

execution is

complete

If input is set to one of the built-in functions —

Home, Inhibit, Hard Stop, Soft Stop, Hard and Soft

Stop, Forward Limit, Reverse Limit or Begin —

execution is immediate upon detection: 0<T<4xTS

If input is set to General input, execution depends

on program. Typical execution time: ≅ 0.5 msec.

High-speed

inputs – 5 & 6

minimum pulse

width, in high-

speed mode

T < 5 µsec

Notes:

 Home mode is high-speed mode and can be

used for fast capture and precise homing.

 High speed input has a digital filter set to

same value as digital filter (EF) of main

encoder.

 Highest speed is achieved when turning on

optocouplers.

Digital Input Schematic

Guitar Installation Guide Guitar Technical Specifications

MAN-GUIIG (Ver. 1.1)

A-12

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Elmo Computer Hardware 1.1 User Manual Page 67

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