LACO PROTOCOL DESCRIPTIONS TITANTEST™
134
© 2018 LACO TECHNOLOGIES, INC. - TitanTest itra01en1-07 SB.fm - 1807
13.ASCII Protocol
13.1 Communication Parameters
13.2 Command Format
In ASCII protocol any command starts with « * » (ASCII code 42dec/2Ahex)
and is finished with the end sign CR (ASCII code 13dex/0Dhex). There is no
differentiation between upper and lower case. A blank is required between
the command and the parameter, no other blanks are allowed.
There is a short and an extended form of the command. Either the short or
the extended command must be used, no other abbreviations are allowed.
Command Words have to be separated by a colon. A command can be com-
posed of up to three words. Parameters have to be separated by a comma.
Each command is answered with the requested data, „ok“ or „EXX“ (in case
of an error). For a list of all error messages see chapter 13.7: "Error Messages**",
page 142. The transmission can be cancelled and the receive-buffer will be
cleared with ESC (ASCII code 27dec/1Bhex), ^C (ASCII code 3dec/03hex) or
^X (ASCII code 24dec/18hex).
Some commands can be used as queries, some can be used to set menu pa-
rameter and some can be used for both. A query is marked by a „?“ (ASCII
code 63dec/3Fhex) after the command; for setting data the command has
to be followed by the new value to be set.
Parameter can be Boolean or numerical:
NOTICE Always use a point as the decimal marker. If a comma is used during
numerical data entry, the conversion of the number is cancelled at
this point and only the integer part of the number will be used.
Timing recommendations for the PC/PLC - Program:
Sample rate > 100 ms
Timeout between request to and answer from TitanTest: 1500 ms
After sending a command the answer must be waited for before sending a
new command. Otherwise the receive buffer may be overwritten.
Data format
Baudrate 19200, 8 data bits, 1 stop bit, no parity
<b> Boolean 0 / 1 or OFF / ON
<No> Numeric representation format: integer, real (15.6) or
exponential (4.5
-7
)
Format: [space] [sign] [ddd] [.] [e[sign]ddd] (d:digit)
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