Meriam M2110P SMART PRESSURE GAUGE - Manual (Page 23)

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User’s Manual Dwg No 9R141-IR
3 Press PRGM/Enter
→ key to accept the digit.
The next digit begins flashing for edit.
4 Repeat steps 2 and 3 for the second digit. The complete 2-digit value will be accepted.
If the correct code was entered, the gauge will perform the requested function. Otherwise, an
error message is displayed, and the gauge either returns to Measure Mode, or enters a “view-
only” status for the programmable registers (if Program Mode was requested).
Notes 1. After step 1 or 2, the Backspace
← key will abort the process and return to Measure Mode.
2. After step 3, pressing the Backspace
← key will abort the current digit and backup to the first digit.
Another Backspace
← will abort the process and return to Measure Mode.
3. Between steps 1 and 4, the Zero function (Up
↑ + Down↓) will clear the entire entry to “00” again.
4. Between steps 1 and 4, if there is no keypad activity for approximately 1 minute, the operation is
aborted and the gauge returns to Measure Mode unchanged.
16. Serial Port Service
The M2110P Smart Gauge SetPoint models and Current Loop models provide RS-232C communication
capability. To use the serial service, connect a standard “dumb terminal” (or personal computer with terminal
software) as shown in the wiring diagram. Set the terminal communication for 9600 baud, 8 data bits, no
parity, one stop bit, and no handshaking. The terminal should be able to display at least 24 lines and 70
columns.
THE MENU
All programmable items of the gauge are available from the menu. Included with the menu is all
current data representing the current programming and operating status.
A sample view of the menu is shown below for reference. The top line identifies the gauge, firmware
revision, and copyright. The second line identifies the model (SetPoint, Current Loop), the full scale
sensor range, and the sensor identifier. Next is a reminder notice to the operator (explained below).
The Engineering Unit section is next. The first line shows the full scale for the current Engineering
Unit, which also identifies the current Engineering Unit. All available Engineering Units are shown
with a menu-selection number; the Engineering Unit is changed by simply selecting its corresponding
menu-number at the terminal keyboard.
Finally, all programmable registers and functions are formatted on the menu. The menu item includes
its menu-selection character, and the current register data as applicable. To change an item, simply
select its character from the terminal keypad; the appropriate sub-menu, notes, and instructions are
presented for operator entry. Note that the serial menu typically provides more flexibility for entering
data values, compared with the gauge’s keypad (for example, more decimal digits of resolution are
available).