RediLevel 2100 DLS
page 4
EL 29306
© 2022 Electrolab, Inc. All Rights Reserved.
4.
All responses are terminated with
Ccccc
(cccc=16 bit CRC field in hexadecimal)
followed by a carriage return linefeed pair
<cr><lf>
. All alpha hexadecimal characters
are lower case.
5.
The prefix to all commands and responses is
Uuu
where
uu
is the unit number (00-
31). The unit number is the identity of the level sensor to which a command is
addressed or which generates the response. ‘*’ may be used as a wild card character
for either digit in the unit number field ‘uu’. The responding level sensor will always
convert wildcard characters to the actual unit number.
6.
Commands, which modify a level sensor configuration, always return the command
string and ‘OK’ if successful. ‘EEerr’ replaces ‘OK’ if there is a problem storing the
configuration data in the level sensor EEPROM.
Data Request Commands
Report Level and Temperature
Uuu?
where
uu
is a two-digit unit number from 00 to 31( “*” may be used as a wildcard for either digit)
Note:
Do Not use the wildcard “**” if connected to more than one level sensor, as all sensors will respond
simultaneously.
Response:
UuuDlll.llFtttEeeeeWwwww
where uu = unit number
lll.ll = level in inches (repeated for sensors with 2 floats)
ttt = temperature in degrees F
eeee = error number
0 = No errors
1= No float detected
2 = One float is out of range on a two-float sensor
3 = Too many groups
4 = (reserved)
5 = Transmit to slave processor for level failed
6 = Transmit to slave processor for temperature failed
7 = Receive from slave processor of level failed
8 = Receive from slave processor of temperature failed
9 = No slave processors responding
Note
: If errors 5 through 9 occur and persist after power cycling, the sensor should be returned for repair.
wwww = warning number
0 = No warnings
1 = Possible level degradation
Under normal circumstances the warning field is 0. It will display
1
if the sensor is configured for two
floats and only one group of switches is detected (i.e., only one float is present or both floats are
abutted).
Note
: The number of decimal places in a data field implies nothing about the accuracy of the
data, i.e., levels are not accurate to 0.01 inches.