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Continuous Transmit" Mode; Changes Stored In Eeprom; Verifying Stored Parameters - Honeywell RDD100 User Manual

Remote digital display
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RDD100 User Guide
Resp
*99WE
Type
*99du= {selection-see DU list below}
(A list of available pressure display units can also be found in the associated transducer User's Manual.)
Resp
*99DU= {selected display units} (Command Echo)
Display Unit
ATM
BAR
CMWC
FTWC
INHG
INWC
KGCM
KPA
MBAR
MMHG
MPA
MWC
PSI
USER
LCOM
PFS
(1)
The LCOM display unit (logic common) automatically switches the digital pressure output to a scale, which has
60000 as the full scale output. The output will have a decimal point in the same position as it was in the original
psi scale. For example, when a 10 psia device is switched to DU=LCOM, the full scale digital pressure output will
be 60.000, instead of 10.000. Also, a 500 psi device will output full scale 600.00 instead of 500.00. PFS
generally provides the highest readout resolution available when using the RDD100 readout.
2.5

"Continuous Transmit" Mode

Type
Resp
Type
Resp
2.6

Changes Stored In EEPROM

Type
Resp
Type
Resp
2.7

Verifying Stored Parameters

After cycling power to the transducer the RDD100 should now display pressure readings in the selected display
units. If there is a need to interrogate the transducer to observe its set-up parameters, this can be done using the
following sequence:
Type
Resp
Although the Display Units example was used, this method of interrogation will work with any of the set up
parameters, listed above and in the associated User's Manuals.
Note: Since pressure units are not a part of the RDD100 display, the user may want to attach a sticker or some other
indication of the pressure units either on or near the display window.
www.honeywell.com
(Command Echo)
Display Units List
PSI Multiplier
0.068046
0.068948
70.304
2.3065
2.0360
27.679
0.070307
6.8948
68.948
51.714
0.0068948
0.70304
1.0000
0.0010000-999.99
FS=60000
FS=100.000
*99we<cr>
*99WE
(Command Echo)
*99mo=p2<cr>
(Continuous Pressure Transmit Command)
*99MO=P2
(Command Echo)
*99we<cr>
(Write Enable Command)
*99WE
(Command Echo)
*99sp=all<cr>
(Store Parameters Command)
*99SP=ALL
(Command Echo)
*99du<cr>
*99DU=INHG
(If transducer is set to read inches of mercury)
Units Description
ambient atmosphere at sea level
5
2
bar (10
newtons/meter
)
centimeters of water column (4ºC)
feet of water column (4ºC)
inches of mercury (0ºC)
inches of water column (4ºC)
2
kilograms/centimeters
kilopascal
millibar (1 hectopascal)
millimeters of mercury (0ºC) or torr
megapascal
meters of water column (4ºC)
pounds per square inch
user supplied
(1)
logic common value
percent of full scale in 0.001%
Increments
5

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