Digital Interfaces Working Modes - Metrologic M20-EPS User Manual

4.2.1 – Digital interfaces working modes
The M20-EPS has several working modes for the input/output digital interface. Each
mode implements specific functions for each interface pin, designed for different user
applications (special functionalities may be added under customer request).
To select the working mode for the input digital interface access menu System
parameters and select submenu Digital port 10-bit input.
To select the working mode for the output digital interface access menu System
parameters and select submenu Digital port 10-bit output.
4.2.1.1 – Digital input interface - Mode 0
The working Mode 0 for the digital input interface da interface implements external
access to needle clean-up routine, air blockage and USB/RS232 data request. These
functions are available on the following pins:
DB25F
connector Signal
pin-out
8 IN1
9 IN2
10 IN3
11 IN4
12 IN5
13 IN6
21 IN7
22 IN8
23 IN9
24 IN10
Metrolog Controles de Medição Ltda
Description
(logic transition L  H) Request data transmission to the USB/RS232 port.
(logic transition L  H) Needle clean-up routine.
(logic transition L  H) Open/block compressed air output to the needle
N/U
N/U
N/U
N/U
N/U
N/U
N/U
Table 2 – Digital Input interface – Mode 0
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