Input basic programming data
48
Serial interface
The serial RS232 interface transfers measurement data and
alarms/notifications in plain text/ASCII in CSV format. It is always
active. The baud rate can be set to 2400, 9600, 19200, 38400 and
115200.
Transmission is in the 8 bit format, 2 stop bits, no parity.
A new measurement value is transmitted as soon as it has been de-
termined.
Select in the menu
=>Basic program =>Serial interface =>Baud
rate
Select the desired baud rate.
Confirm the selection with "OK"
New alarms are transmitted via the serial interface and some alarms
even when the alarm has been ended; see Error messag-
es/troubleshooting.
Notification format
The notifications are sent in a very similar format as the data placed
on the SD card:
The headings are not transmitted
Field separator is a comma
Decimal separator is a full stop
Each data set is started with the ASCII characters “02”
<STX> and terminated with “03” <ETX>.
Notifications and measured values can be distinguished by
evaluating the first characters: If “ME” is read, it is a meas-
ured value; with “AL”, it is an alarm/notification.
This corresponds to the format of the Testomat 2000
®
data
logger.
Example of measured value:
<STX>ME,TH2005,31.07.2013,08:09,0.050,°dH,limit
val.1:,0.200,°dH,limit val.2:,0.300,°dH<ETX>
Examples of notifications:
<STX>AL,Power failure,01.08.2013,06:30<ETX>
<STX>AL,turbidity,01.08.2013,07:30<ETX>
<STX>AL,turbidity inactive,01.08.2013,07:35<ETX>
For connection to a PC a so-called null modem cable is required.
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