Operating instructions

9. Communication with external data acquisition system (option) page 92
Mercury Instruments UT-3000-E_V2.11.docx 31.07.12
Analytical Technologies
<STX>;E;13827;<ETX> 13827 = CRC16
E= error command
valid for every checksum-error
If the external master recognises a checksum-error, the master has to repeat the inquiry, not to send the error
command to the UT-3000.
If the UT-3000 does not recognise the command or an unknown command is send,
the UT-3000 answers:
<STX>;X;26122;<ETX> 26122 = CRC16
Type of command: L: logger, read, reset
S: status
P: inquiry of parameters
C: system control
Logger Command:
Inquiry: <STX>;L;S;<CRC>;<ETX> external inquiry for logger status
Answer: <STX>;L;0;<CRC>;<ETX> 0 = Logger off
<STX>;L;1;A;B;C;<CRC>;<ETX> 1 = Logger on
A = start date, 6 bytes (year, month, day )
B = start time, 4 bytes (hour, minute)
C = number of logged data
5 bytes (max. 5000 data records)
data no 1 = first registered data
Example: <STX>;L;S;23038;<ETX> 23038 = CRC16
<STX>;L;0;43478;<ETX> 43478 = CRC16
<STX>;L;1;040228;1530;123;23598;<ETX> date = 28.02.04
time = 15:30
number of logged data = 123
Inquiry: <STX>;L;R;<CRC>;<ETX> command to reset the logger
Answer: <STX>;L;R;<CRC>;<ETX> same as the inquiry
Example: <STX>;L;R;51711;<ETX> 51711 = CRC16
Inquiry: <STX>;L;D;index;<CRC>;<ETX> index = number of data records, max. 4 bytes
Answer: < STX>;L;date;time;sample volume;concentration;<CRC>;<ETX>
one data record is transferred = logger data transfer
date = day, month, year (6 bytes)
time = hours, min. (4 bytes)
sample volume (max. 5 bytes)
concentration (max. 6 bytes)
Example: <STX>;L;D;23;20443;<ETX> 23 = no. of data record
<STX>;L;280204;1630;2.0;2.3;58784;<ETX> date = 28.02.04
time = 16:30
sample volume = 2.0
concentration = 2.3