RayTek MARATHON MM SERIES - Sensor Information and Setup Commands

Programming Guide
Marathon MM Rev. D7 Jul 2017 71
characters in the burst string. Using this mode automatically sets the burst string to contain
only the values for the “T”, “I” and “XT” parameters. However, the “T”, “I” and “XT”
characters are removed from the burst string.. , Issuing the command $=$ sets the unit into the
fastest burst and changes the format of the burst string from <T0150.3 I0027.1 XT00> to <0150.3
0027.1 00>. Because of the burst string is now shorter, the required baud rate will be slower
and the effective transmission rate will be faster.
10.6.2 Minimum Baud Rate
The minimum required interface baud rate depends on the number of transferred characters and the
read cycle time of the burst mode (standard, fast, or fastest). It may be computed as the following:
cycle
charbit
t
nn
b


where:
b = minimum required interface baud rate in [bit/s]
nbit = the number of necessary bits for one transferred character including stop bit, is always 9 (8 data
bits and 1 stop bit), given in [bit/char]
nchar = the number of characters in the burst string including blanks, <CR>, and <LF>, given in [char]
tcycle = read cycle time given in [s]
Example:
The burst string in the format “$=TIXT” + “$=$” gives the content with 12 characters, e.g. “1234.5 46
0<CR>”. What is the minimum required interface baud rate in the very fast burst mode with 1 ms read
cycle time?
s
bit
s
bit
schar
charbit
b 115200108000
101
129
3





10.7 Sensor Information
The sensor information is factory installed as read only values.
Command
Description
Answer (example)
?XU
Name of the sensor
“!XUMMLT”
?DS
Additional remark, e.g. for special numbers
“!DSRAY“
?XV
Serial number of the sensor
“!XV2C027“
?XR
Firmware revision number
“!XR2.08“
?XH
Maximum temperature of the sensor
“!XH0800.0“
?XB
Minimum temperature of the sensor
“!XB-040.0“
Table 9: Sensor Information