OMC-042 / 043 / 044 Data loggers
Users
’ manual
page 84
System records
The System-records are used to log system related information. System-records do not contain normal
measurements. A system-record is made, when an deviating situation has occurred, for instance, when a
sensor is not replying to a request from the logger. System-records are used for monitoring system-
performance.
The syntax of an S-record is:
S;<Timestamp>;<Message code>[;<Supplemental code or text;[
”<Explanatory text>”]]
So, the S-
record consists of an ‘S’ character followed by a timestamp, and after that, one or more series of
parameter code and parameter name.
So the S-record consists of these elements
1. S (to distinguish a system record from a data record)
2. Timestamp (yymmddhhss)
3. Message code
4. Optional supplemental code or text
5. Optional explanatory text
See Appendix ‘System messages’ for a list of possible messages and their meanings.
Example S-records:
Data Modifiers
Normally a data value, presented in D-records is recorded without a Data Modifiers, but in case of a
malfunction, or rare circumstances, a Data Modifier is added to the data value. See table below:
Data
Modifier
Description
Remarks
*T
Timeout
The sensor did not provide the data logger with a data value, and the
timeout has expired. The previous data value is recorded, with the
addition of this exception.
*I
Data Invalid
The data logger did receive a data value from the sensor, but it was
out of boundary. This exception is very rare.
*A
Alarm Value
The data logger has received a value, which is outside the limits of
the particular parameter.
S;110922202054;CFG_RESET
S;110922202054;CFG_CHANGED;Brasil_3002389
S;110922202124;MODEM_WDT;STATE 10
