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7 Communication
Communication with the Data logger DLU can take place via the following interfaces:
-
Micro USB
-
COM1 (dependent on the configuration)
-
COM2 (dependent on the configuration)
-
Ethernet (Data logger DLU E (9.1711.10.010)
Baud rate and framing can be set for the interfaces micro USB, COM1 and COM2. The
interfaces COM1 and COM2 also allow the selection of the duplex mode (half or full duplex).
The optional network interface (Ethernet) comprises a Telnet server (port number: 23). The
IP address can be adjusted in the Data logger by command or on the display.
The data exchange takes place in the ASCII format with the THIES command interpreter.
The behaviour (configuration) of the Data logger can be changed with the available
commands (see
chapter 7.2
).
Upon the starting of the Data logger, the character string “universal logger”, software version,
hardware ID and serial number is output.
Example:
universal logger
V02.01
533331003846344D3330313034363038
00000000
7.1 Command Interpreter THIES
The THIES command interpreter defines the interface between a master (e.g. PC) and the
Data logger as a slave. The Data logger (slave) is always passive in this, i.e. it only responds
to requests from the master.
The requests from the master (commands) and the response telegrams from the Data logger
(slave) contain only ASCII characters. The following special characters can be used in this:
-
\r
carriage return
-
\n
line feed
-
STX
start of text
-
ETX
end of text
