zeiss_rec_500
– Zeiss REC 500¶
This was the first format supported by Total Open Station. For historical reasons, its documentation is far more extended than those of other formats. The step by step procedure is useful for anyone who wants to hack on TOPS itself.
Step-by-step download procedure¶
At the time I was doing the first tests, I found it useful to collect all steps. The program goes through them automatically:
>>> import serial
>>> ser = serial.Serial('/dev/ttyUSB0', \
baudrate=9600, bytesize=serial.SEVENBITS, timeout=0, \
parity=serial.PARITY_NONE, rtscts=1)
>>> ser.open()
At this point, you have to start the download from the device menu. When this operation has finished, it’s good practice to control if you have actually received any data:
>>> ser.inWaiting()
648L
A non-zero result means that something has been downloaded. Good enough.
This number can be saved to a variable and passed as parameter to the
read()
command:
>>> n = ser.inWaiting()
>>> result = ser.read(n)
The result
object is a string that contains our data:
>>> print(result)
0001 OR.COOR
0002 0S X 0.000 Y 0.000 Z 0.000
0003 Om 397.0370
0004 POLAR
0005 INPUT th 1.500 ih 0.000
0006 INPUT th 0.000 ih 0.000 Z 0.000
0007 1 X -0.472 Y 1.576 Z 0.004
END
So far, we can say that the downloaded file contains this information:
OR.COOR
: but I don’t know if this line can take other values tooorigin point defined by the
OS
string followed by itsX
,Y
,Z
coordinatesorientation angle
Om
: are these gradiants?POLAR
: but I don’t know if this line can take other values tooINPUT
: are there always twoINPUT
lines?th
ih
Z
points, expressed as
N
(starting from 1),X
,Y
,Z
END
: after this line no more data