RESEARCH CONCEPTS RC2000A DUAL AXIS Instructions Manual page 88

88 RC2000A Dual Axis Antenna Controller
byte 5:
byte 6:
The normal response to this query command contains 19 bytes and the format is as follows ...
byte 0
byte 1
byte 2
bytes 3,4
bytes 5,6
bytes 7-16:
bytes 17-21
bytes 22-26
bytes 27-31
bytes 32-36
Bytes 37
Byte 38-42
Byte 43-48
byte 49
byte 50
Note that if entry 'XX' does not exist in the list (or the list has no entries) the NAK reply will be sent back
to the host.
USER AUTO MOVE COMMAND
This command causes the controller to automatically position the antenna in azimuth, elevation, and
(optionally) polarization. The auto move can optionally be followed by a peaking operation (if the
controller support peakups and peakups are enabled). The command also accepts satellite name,
satellite polarization, and satellite longitude strings. The satellite name string and polarization character
are displayed in REMOTE and MANUAL modes. Longitude values are only displayed in MANUAL
mode.
The command contains 45 bytes. Here is the format ...
byte 0:
byte 1:
byte 2:
bytes 3 – 9:
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satellite name is read. The maximum possible range for XX
and YY is 1 through 50.
ETX
checksum
ACK
A where A is the RC2000 address
3bh the sat data read command code
'XX' where XX is the index of the satellite name being requested.
'YY' where YY is the total number of satellite names contained in
the list.
satellite name This field will contain the satellite name, normally left justified
and right padded with blanks.
azim position This field will contain the satellite's azimuth position in an
ASCII format that is right justified and left padded with blanks.
elev position This field will contain the satellite's elevation position in an
ASCII format that is right justified and left padded with blanks.
hpol position This field will contain the satellite's horizontal polarization
position in an ASCII format that is right justified and left padded
with blanks.
vpol position This field will contain the satellite's vertical polarization position
in an ASCII format that is right justified and left padded with
blanks.
band ASCII '0' for C band, '1' for Ku band, and '2' for a dual band
satellite.
sat longitude The satellite longitude in tenths of degrees in an ASCII format,
right justified and left padded with blanks. West longitude
values will are proceeded by a minus sign, '-'.
reserved Reserved for future expansion
ETX
checksum
STX
A where A is the RC2000 address
40h User auto move command code (ASCII '@')
azim position Azimuth target position. The value must be right justified and
left padded with zeroes. Values between 0 and 65535 are
accepted. A value of zero implies that azimuth movement will
not occur.
Appendix E Communications Protocol
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