ROTRONIC MBW 473 - Manual (Page 41)

MBW473_MANUAL_E_V2.0 37
Leading and Trailing Spaces
The 473 ignores leading and trailing spaces. It also ignores spaces before and after equal signs and
question marks. For example, both the following commands are perfectly valid.
Dp? C
R
Dp ? C
R
However, the following command is invalid since spaces are embedded within the keywords.
D p? C
R
Case Sensitivity
All commands are insensitive to case. For example, the commands DP?, Dp?, dP?, and dp? will trig-
ger identical responses from the 473. They will return the measured dew point value.
Numerical Values
All numerical data received from the 473 is either in standard or in scientific notation. Receiving a
number as 12.34 is the same as receiving it as 1234e-2 or as 1.234e1. Depending on the value of
numerical responses the 473 sends out, it may send the numbers in either standard or scientific nota-
tion.
Numeric data is never appended with text of any kind. When requesting a temperature related value,
only the numeric portion of the value is sent. The units are assumed.
The following table lists the units of the numerical data that the 473 returns, regardless of the units
selected on the touch screen display or set via the RS-232. When you change units (even if you
change them via RS-232), you affect only what is seen on the display. All numerical values retrieved
from the RS-232 will always be in the following units.
Parameter Units via RS-232
Temperature °C
Pressure Pa
Flow l/m
Volume Ratio PPMv
Weight Ratio PPMw