RESEARCH CONCEPTS RC2000C Manual page 87

RC2000C Polar Tracking Antenna Controller
byte 13:
7 6 5 4
0 0 1 0 $ 0 0 _ _
bytes 14-18:
bytes 19-23:
bytes 24-25:
byte 26:
7 6 5 4
0 0 1 0 $ _ _ _ _
Research Concepts, Inc. • 5420 Martindale Road • Shawnee, Kansas 66218-9680 • USA
the string will be padded with blanks. If a satellite name is not
currently displayed, this field will contain blanks.
sat_name status - binary data
3 2 1 0
0 0
0 1
1 0
az position This field will contain the current azimuth position, formatted in a
manner identical to how the position is displayed on the front of the
unit, '0' to '65535'. If an azimuth limit is active, the field will contain
either 'EAST' or 'WEST'.
el position This field will contain the current elevation position, formatted in a
manner identical to how the position is displayed on the front of the
unit, '0' to '65535'. If an elevation limit is active, the field will contain
either ' DOWN' or 'UP'.
pol position If a Polarotor is present in the system this field will contain the current
polarization position, formatted in a manner similar to how the position
is displayed on the front of the unit, '0' to '98', or 'CC' or 'CW' if a limit is
active. As the Polarotor moves counter clockwise (as viewed looking
into the feed horn), the displayed numbers get greater.
If a rotating feed is present in the system, this field will contain a value
in the range of 0 to 92, 'CW' or 'CC'. The value in this field will be
related to the value displayed on the user interface of the controller by
the following formula ...
byte_24_25_position =user_interface_position / 11.
where
byte_24_25_position ... is the value returned in bytes 24 and 25.
user_interface_position ... is the polarization position displayed on the
display of the user interface.
Note that the division defined above is an integer division. The result
is rounded DOWN to the closest integer.
Please see byte 32 of this command's reply message for more
information on polarization position representations.
polarization code and autopol status - binary data
3 2 1 0
0 x x x * auto pol disabled
1 x x x auto pol enabled
x 0 0 0 'H' polarization code displayed
x 0 0 1 'h' polarization code displayed
x 0 1 0 'V' polarization code displayed
Appendix E
displayed in upper case letters
displayed in lower case letters
sat_name not displayed
Communications Protocol
www.researchconcepts.com
81