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The name CoMeter is an acronym for COMMUNICATING
METER.
It can be connected, plug & play, into the standard terminal
block of the 600T EN Series Pressure Transmitter.
It is capable to provide both reading and configuration
operations, when used in connection with the analog-only
version, obviously its functionality is intended as programmable
meter. The LCD display has three lines; the first one is used for
5 numeric characters, up to 99999, plus a minus (-) sign on the
left and a star (*) sign, up on the right, to indicate HART
communication is in progress;
the second line is a 10 segments bargraph used to show the
output, from 0% to 100% in 10% steps;
ADDENDUM FOR COMETER - ANALOG LCD INDICATOR WITH HART
PROGRAMMING CAPABILITY
the third line is used for seven alphanumeric characters to
display units or messages.
In addition to the display the plastic membrane has 4 push
buttons used for programming and for menus navigation.
And more precisely, they are:
top left position:
ESCAPE key
top right position:
ENTER key
bottom left position: NEXT key
bottom right position: PREVIOUS key
Fig. 5 CoMeter
NOTE: the installation and usage of the CoMeter on
a 600T Series Pressure Transmitter, not Enhanced,
requires the terminal block upgrade or substitution.
The normal operating condition for the CoMeter is to display
the analog output signal of the transmitter, expressed in
milliAmpere (this is the default setting), or in percentage or in
engineering unit, with all the units available as for the HART
Communication Protocol.
In addition to the indicator functionality, the CoMeter can be
used as a configuration tool, where both the CoMeter itself and
the transmitter can be configured.
In fact, two are the main menu : ConF METER" and "ConF
XMTR".
ACCESS TO CONFIGURATION
To enter these menù the keys PREV and NEXT must be
pressed simultaneously for 3 seconds, then the user can
switch between the XMTR and the METER configuration using
the NEXT and the PREV key.
NOTE: when the Configuration action is finished,
remember to press the ESC key to return to display the
previous selected value.
ConF METER - METER CONFIGURATION
PASSWORD
The access to the configuration menus can be protected by a
5 digits numeric password.
It is under the ConF METER menu that the password can be
defined and enabled.
See figure 6 for the access to the "ConF PASSWORD" menu.
Once you have entered the "ConF PASSWORD" menu the
cursor is blinking on the most significant digit.
Press ENTER, if you want to change the digits, initially set to
zero (0).
Use the NEXT and PREV key to increase or decrease the value
of the single digit, use the ENTER key to move the cursor to the
next digit, use the ESC key to move back to the previous digit.
When the string "UPDATE?" appears on the display you can
use the ENTER key to accept the new password or the ESC
key to abort the password definition.
When all digits are set to zero, the password is disabled.
ESC key
Bargraph for
analog output indication
NEXT key
ENTER key
Sign for HART
communication
PREV key
12.000 *
0% / - - - - -
/ 100%
mA
