29
IMPORTANT NOTE: This command automatically verifies
the characters written and sends them back. Valid values for
writing to the EEPROM using the “ew” command are 3 char-
acter decimal values, 000 through 255.
IMPORTANT!!!
USE OF THE “ez” COMMAND WILL RE-INITIALIZE THE
EEPROM TO ITS PRE-CALIBRATION STATE, ALL COEFFI-
CIENTS WILL BE LOST .
DO NOT INADVERTANTLY USE THIS COMMAND
ez
ZERO EEPROM (INITIALIZE EEPROM)
Command Description
This command is controlled by the
EEPROM lock, therefore, to use
this command, a value of “093”
must be in EEPROM location
127. This command initializes the
EEPROM by zeroing all locations
except the following:
Sets the Vp ADC gain to 003 (EEPROM location 016)
Sets the Vi ADC gain to 003 (EEPROM location 032)
Sets the Vp ADC scale to 006 (EEPROM location 031)
Sets the Vi ADC scale to 007 (EEPROM location 047)
Sets the Vp Channel Offset to (120 000 000)
Sets the Vi Channel Offset (128 000 000)
Sets the Vp Channel Offset to (089 000 000)
Sets the Vi Channel Gain (089 000 000)
Sets the p_calc gain to 1.000
Sets the User Span to 1.000
Sets the Full Scale Value to 100.00
Sets the Full Scale Decimal Point Position to 002
(EEPROM location 124)
Sets the Sensor Pulse Delay to 2.5 ms, (025 to
EEPROM location 063)
Sets the Vp SF word to 216 (16.6 ms update rate)
Sets the Vi SF word to 261 (2.5 ms update rate).
Sets the Heise Label to 1, (001 to EEPROM location
005)
Sets the Pressure Output Decimal Point Position to
002 (EEPROM location 014)
Command Type
Write Only Command
Write Command Syntax
#01ez[CR]
Typical Write Command Response: fixed length
3 bytes
FA
FILTER AMOUNT VALUE
Command Description
Write Only Command
Factory Default
05 (16 averaged values)
Command Type
READ Only Command
Read Command Syntax #01FA[CR]
Typical Read Command Response:
Outputs the filter Amount Value as a fixed length 8-character
string as shown below.
FA Typical Read Command Response
[See pages 40 and 41 for a more detailed description of ‘FA’
command]
Char. Position
1
2
3
Response Char.
ACK CR
LF
Char. Position
1
2
3
4
5
6
7
8
Response Char.
F
A
=
0
1
ACK CR
LF