Programmable Function Keys User Menu (User); Tare (Tare) - Ametek DDMC Instruction Manual

DDMC Analog Input Process Meter / Controller
Programmable Function Keys
User Menu (user)
The User menu allows the user to assign the front
panel function keys F1, F2, and F3, the digital input
F4 (a digital input located on the input signal
connector), and up to eight additional digital inputs to
access most of the menus or to activate certain
functions immediately (e.g. reset max & min, hold
relay states, etc.). This allows the meter to be greatly
customized for use in specialized applications.
Up to eight digital outputs can be assigned to a
number of actions and functions executed by the
meter (i.e. alarms, relay acknowledgement, reset
max, min, or max & min, tare, and reset tare). The
digital outputs can be used to trigger external alarms
or lights to indicate these specific events.
Function Keys & Digital I/O
Available Settings
Refer to the following table for descriptions of each
available function key or digital I/O setting.
Function Keys & Digital I/O Available Settings
Display Description
Reset the stored maximum display
Rst Hi
value
Reset the stored minimum display value
Rst Lo
Reset the stored maximum & minimum
Rst HL
display values
Capture tare and zero the display
tare
Reset captured tare and resume normal
Rst tr
operation
Directly access the relay menu
relay
Directly access the set point menu for
Set 1*
relay 1 (*through 8)
Disable all relays until a button
Rly d
assigned to enable relays (Rly E) is
pressed
Enable all relays to function as they
Rly E
have been programmed
Hold current relay states and analog
O Hold
output as they are until a button
assigned to enable relays (Rly E) is
pressed
Hold the current display value, relay
d Hold
states, and analog output momentarily
while the function key or digital input is
active. The process value will continue
to be calculated in the background.
Display maximum display value on line 1
Ln1 Hi
Function Keys & Digital I/O Available Settings
Display
Ln1 Lo
Ln1 HL
Ln2 Hi
Ln2 Lo
Ln2 HL
F On 1*
Contrl
disabl
AcH
*If installed
Reset
nmenu
rigHt
up
Enter
Alnm 1*

Tare (tare)

The tare function zero's out the display. In the case of
scale weight, tare is used to eliminate container
weight and provide net weight readings. There are
two tare functions; Capture Tare and Reset Tare.
When the capture tare function is used, the display
reading is offset by the displayed amount to make the
displayed value zero. This modified display value is
the net value. The originally displayed value without
the tare offset is the gross value. Both may be chosen
as a display option.
Reset tare removes the display offset of the net value,
and the gross and net values become the same until
a new capture tare is entered.
41
Instruction Manual
Description
Display minimum display value on line 1
Display maximum & minimum display
values on line 1
Display maximum display value on line 2
Display minimum display value on line 2
Display maximum & minimum display
values on line 2
Force relay 1 (*through 4) into the on
state. This function is used in
conjunction with a digital input
expansion module to achieve interlock
functionality. See Setting Up the
Interlock Relay (Force On) Feature on
page 34 for details.
Directly access the control menu
Disable the selected function key or
digital I/O
Acknowledge all active relays that are in
a manual operation mode such as auto-
manual or latching
Directly access the reset menu
Mimic the menu button functionality
(digital inputs only)
Mimic the right arrow/F1 button
functionality (digital inputs only)
Mimic the up arrow/F2 button
functionality (digital inputs only)
Mimic the enter/F3 button functionality
(digital inputs only)
Provide indication when alarm 1
(*through 8) has been triggered (digital
outputs only)