Справочник Пользователя для Emerson Process Management 3420
Reference, Installation, and Operations Manual
Section 6: Meter operation
3-9000-743 Rev S
June 2013
Digital Input
225
The maximum length of time that the analog output can remain in the test mode is specified via
the
the
NonNormalModeTimeout data point. Note that this data point applies to other tests as
well. The
NonNormalModeTimeout data point can be changed using the Daniel MeterLink
Edit/Compare Configuration
screen. It can be set within the range [1, 30 min] and has a default
value of 2 min.
6.3
Digital Input
The Mark III meter provides one digital input (referred to as DI1). The polarity of the input is
configured via the
configured via the
DI1IsInvPolarity data point as follows:
•
FALSE - normal polarity (default setting), or
•
TRUE - inverted polarity
The digital input is not configurable via the Daniel MeterLink
Field Setup Wizard
. It must be
configured via the Daniel MeterLink
Edit/Compare Configuration
screen.
The value of the input is accessible via the
DI1 data point.
Current output
Start(Stop)AO1
(Option Board)
Start(Stop)AO1
(Option Board)
Data points affected:
•
IsAO1EnableTest
Options:
•
Click on the StartAO1 button to enter the test mode (TRUE) (Note: the Start button will
become the Stop button after clicking on it.)
become the Stop button after clicking on it.)
•
Click on the StopAO1 button to exit the test mode (FALSE) (Note: the Stop button will
become the Start button after clicking on it.)
become the Start button after clicking on it.)
Guidelines:
•
The specified test value takes effect within one batch period of clicking the Start button
(see below).
(see below).
Current output
Output setting
(Expansion Board with
HART®)
Output setting
(Expansion Board with
HART®)
Data points affected:
•
AO2TestModeOutputPercent
Options:
•
Enter the integer percentage of full scale for the analog output within the range [0, 100 %]
where 0% corresponds to the minimum output (4 mA) and 100% corresponds to the
maximum output (20 mA).
where 0% corresponds to the minimum output (4 mA) and 100% corresponds to the
maximum output (20 mA).
Guidelines:
•
The specified test value takes effect within one batch period of clicking the Start button
(see below).
(see below).
Current Output
Start/StopAO2
(Expansion Board with
HART®)
Start/StopAO2
(Expansion Board with
HART®)
Data points affected:
•
IsAO2EnableTest
Options:
•
Click on the StartAO2 button to enter the test mode (TRUE) (Note: the Start button will
become the Stop button after clicking on it.)
become the Stop button after clicking on it.)
•
Click on the StopAO2 button to exit the test mode (FALSE) (Note: the Stop button will
become the Start button after clicking on it.)
become the Start button after clicking on it.)
Guidelines:
•
The specified test value takes effect within one batch period of clicking the Start button
(see below).
(see below).
Table 6-14 Data points for output test mode
Daniel MeterLink
Display Name
Display Name
Data Points, Options and Guidelines