2
COMMAND LIBRARY COMMUNICATION SPECIFICATION
DXD Firmware Change Summary:....................................................................................... 23-24
Communications Introduction ...................................................................................................25
Comunications Settings ............................................................................................................25
Communications Protocol .........................................................................................................25
Eeprom Lock ............................................................................................................................26
Command Library Mnemonics .................................................................................................26
AD Unit Address ................................................................................................................26
BR Baud Rate ...................................................................................................................27
ED Eeprom Memory Map Dump ........................................................................................27
EF Error Flag .....................................................................................................................28
ER Read From Eeprom Address. .......................................................................................28
EW Write To Eeprom Address.............................................................................................28
EZ Eeprom Zero (Initialize Eeprom) ...................................................................................29
FA Filter Amount ................................................................................................................29
FB Filter Band ....................................................................................................................30
FS Full Scale Value ............................................................................................................30
FV Firmware Version ..........................................................................................................31
HI
Heise Label (Serial Number) .........................................................................................31
PS Psi Reading ..................................................................................................................31
PT Pressure Type ...............................................................................................................31
RC Raw Counts .................................................................................................................32
ST Sensor Temperature .....................................................................................................32
UL User Label ....................................................................................................................32
US User Span ....................................................................................................................33
UT User Tare ......................................................................................................................33
UZ User Zero .....................................................................................................................34
BA Bar Reading .................................................................................................................34
CW Cm Of Water Reading ..................................................................................................34
FW Feet Sea Water Reading ..............................................................................................35
HP Hectopascal Reading ...................................................................................................35
IM Inches Of Mercury Reading..........................................................................................35
IW Inches Of Water Reading .............................................................................................35
KP Kilopascal Reading ......................................................................................................36
MB Millibar Reading ...........................................................................................................36
MM Mm Of Mercury Reading ..............................................................................................36
MP Megapascal Reading ...................................................................................................36
NP Numeric Value ..............................................................................................................36
Transducer Command Summary ..............................................................................................37
Read Command Summary ........................................................................................................37
AEU Command Summary .........................................................................................................38
Write Command Summary ........................................................................................................37
Error Codes (Legacy Mode) ......................................................................................................37
AEU Scale Factors ....................................................................................................................38
Mode Byte .................................................................................................................................38
Detailed Explanation of the “FA” & “FB” Commands................................................................40
Alternate Engineering Units (AEU) Explained ............................................................................42
Update Rate Modifications ........................................................................................................42
Synchronous Read Command (Addendum A) .........................................................................44
Read Commands Summary ......................................................................................................45
ATS Varient (Addendum B) ........................................................................................................46
DXD Receiver to Transmit Delay Capabilities (allows half duplex operation in RS-485) ..........48
ASCII Character Code Table (page 26 of Installation and Operation Instructions)
DXD Set-up Utility, Manual/Software .................................................................................. 51-71
TABLE OF CONTENTS (cont.)