ACOEM Met One Instruments GAS-1060, User Manual

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Serinus 60 User Manual 3.0
Page 56
3.4.26 Digital Input Menu
Main Menu

Communications Menu

Digital Input Menu
This menu is used to remotely trigger zero and span calibrations. This is done by assigning the eight
digital inputs with one of the following commands.
DI N (Pin X) Associates an action with a digital input. There are eight
available digital inputs (the pin numbers are for the 25-pin
connector). Each one can have one of the following associated
actions, triggered when the corresponding digital input goes
to the
Active state:

Disabled: No action (this digital input does nothing) the pin
is forced to Active Low.

Do Span: Used to perform a span check When activated the
instrument sets the Cal. Mode to Span ( refer to Section
3.4.10.1).

Do Zero: Used to perform a zero When activated the
instrument sets the Cal. Mode to Zero (refer to Section
3.4.10.1).
Active
[DO Span, Do Zero]
Each pin can be set to be active High or Low . Active High
means that the event will be triggered when the line is pulled
to 5V. Active Low means that the event will be triggered when
the line is pulled to 0V.
Example
Here is a typical configuration between an instrument and either a data logger or calibrator (master
device):
1. Set the jumper JP1 to 5V position (refer to Section 4.4.3).
2. Connect one of the master devices digital output signals to pin 18 and the ground signal to pin 5
of the instrument’s analog/digital 25 pin female connector (refer to Figure 18).
3. Program master device to output 0 volts to pin 18 when a span is desired.
4. In the instrument’s Digital Input Menu assign DI 0

Do Span .
5. Set the Active state to Low
6. The same procedure can be followed to also activate zero calibrations. Pin 6 of the instrument’s
analog/digital 25 pin female connector can be connected to one of the other master devices
digital outputs and the instrument can be set so
DI 1 is assigned to Do Zero .
3.4.27 Digital Output Menu
Main Menu

Communications Menu

Digital Output Menu
This allows the instrument to trigger external alarms in response to certain events.