Research Concepts RC2000A - Manual (Page 73)

RC2000A Dual Axis Antenna Controller Appendix E Communications Protocol 73
a a a a $ a a a a
7 6 5 4 3 2 1 0
- - - - - - - -
0 0 0 0 0 0 0 0 0 - no alarm active
0 0 0 0 0 0 0 1 1 - low battery alarm
0 0 0 0 0 0 1 0 2 - azimuth alarm
0 0 0 0 0 0 1 1 3 - elevation alarm
0 0 0 0 0 1 0 0 4 - azim count alarm
0 0 0 0 0 1 0 1 5 - elev count alarm
0 0 0 0 0 1 1 0 6 - azim limit corrupt alarm
0 0 0 0 0 1 1 1 7 - elev limit corrupt alarm
0 0 0 0 1 0 0 0 8 - autopol data alarm
0 0 0 0 1 0 0 1 9 - simultaneous az/el alarm
0 0 0 0 1 0 1 0 10 - azim slow speed alarm
0 0 0 0 1 0 1 1 11 - elev slow speed alarm
0 0 0 0 1 1 0 0 12 - comm port data alarm
0 0 0 0 1 1 0 1 13 - geo elev position alarm
0 0 0 1 0 0 0 1 17 - az/el ang display alarm
0 0 0 1 0 0 1 0 18 - pol limits alarm
0 0 0 1 0 0 1 1 19 - pol options alarm
0 0 0 1 0 1 0 0 20 - pol alarm
0 0 0 1 0 1 0 1 21 - azim drive options alarm
0 0 0 1 0 1 1 0 22 - elev drive options alarm
byte 32 : This byte gives information which allows
the user to determine the exact value of
the controller's internal polarization
position representation. This may be
used with the auto$move command to
position the polarization control device
at a specific value.
The RC2000 currently supports two
polarization control devices, a polarotor
and a rotating feed with potentiometer
position sense feedback.
For the polarotor, the polarization
position value reported via the user
interface and the comm port (bytes 24
and 25 of the device status pol command
reply) is a value in the range of 0 to
98, 'CW' (for clockwise limit) or 'CC'
(for counter clockwise limit). The
controller's internal polarization
position representation, however, is a
value in the range of 0 to 661. An
internal position of 0 corresponds to the
CW limit and an internal position of 661
corresponds to the CC limit. Internal
position values in range of 1 to 660 are
scaled to display as a value of 0 to 98
on both the user interface and via bytes
24 and 25 of the device status poll
reply. To obtain the internal position
Research Concepts, Inc. • 5420 Martindale Road • Shawnee, Kansas • 66218-9680 • USA www.researchconcepts.com