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RC4000 Antenna Controller
3.5 Polarization Command
The following command specifies a move to a polarization position. There are multiple forms of this
command. The reply to any form of this command will be the same as the reply to the status poll query
command except the command code will be 34h.
Form 1. The command contains 6 bytes. The format of the command is as follows:
byte 0
byte 1
byte 2
byte 3
byte 4
byte 5
If the Polarization Type is set to DUAL (2 Port Feed) either the 'H' or 'V' argument will result in a move to
the single polarization position associated with the satellite.
If TRACK mode is active and a peaking or search operation is in progress this command will not be
executed until after the peaking or search operation terminates. If this occurs the normal
acknowledgment will be sent to the host.
Form 2. The command contains 6 bytes. The format of the command is as follows:
byte 0
byte 1
byte 2
byte 3
bytes 4-9
byte 10
byte 11
This form of the command will move the polarization to a normalized position within the range of motion.
For example, if the polarization axis has limits of +/-90 degrees, and the value specified in the position
field is -100 degrees, this command will move to the equivalent position of +80 degrees. Conversely, if the
value specified is -55 degrees, this command will move the polarization position to -55 degrees.
NOTE: Form 2 is not available while TRACK mode is active.
Appendix REM
STX
A
RC4000 address
34h
the command code
'X'
this field will specify either 'H', 'V', or 'X' where:
H/V -- moves the polarization to the horizontal/vertical
polarization position associated with the last auto move target
satellite
X -- moves the polarization 90 degrees from the current
polarization position
ETX
checksum
STX
A
RC4000 address
34h
the command code
' '
this field must be 20h (blank)
Position
Target polarization position, +/-180.0 degrees
Left Justify and pad with blanks
ETX
checksum
REM-18
Remote Control Option
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