RESEARCH CONCEPTS RC2000C Manual page 89

RC2000C Polar Tracking Antenna Controller
byte 31:
7 6 5 4
0 0 1 0 $ _ _ _ _
Alarm codes - See the system error codes in chapter 6 of the RC2000A manual.
a a a a $ a a a a
7 6 5 4
- - - -
byte 32:
The RC2000 currently supports two polarization control devices, a Polarotor and a rotating feed with
representation, however, is a value in the range of 0 to 661. An internal position of 0 corresponds to
Research Concepts, Inc. • 5420 Martindale Road • Shawnee, Kansas 66218-9680 • USA
a a a a of the alarm code
3 2 1 0
most significant nibble of alarm status - binary data
3 2 1 0
a a a a of the alarm code
7 6 5 4
3 2 1 0
- - - -
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 1
0 0 0 0 0 0 1 0
0 0 0 0 0 0 1 1
0 0 0 0 0 1 0 0
0 0 0 0 0 1 0 1
0 0 0 0 0 1 1 0
0 0 0 0 0 1 1 1
0 0 0 0 1 0 0 0
0 0 0 0 1 0 0 1
0 0 0 0 1 0 1 0
0 0 0 0 1 0 1 1
0 0 0 0 1 1 0 0
0 0 0 0 1 1 0 1
0 0 0 0 1 1 1 0
0 0 0 0 1 1 1 1
0 0 0 1 0 0 0 0
0 0 0 1 0 0 0 1
0 0 0 1 0 0 1 0
0 0 0 1 0 0 1 1
0 0 0 1 0 1 0 0
This byte gives information that 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.
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
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 from
this byte and bytes 24 and 25, use the following formula ...
Appendix E
most significant nibble
0 - no alarm active
1 - low battery alarm
2 - azimuth alarm
3 - elevation alarm
4 - azim count alarm
5 - elev count alarm
6 - azim limit corrupt alarm
7 - elev limit corrupt alarm
8 - autopol data alarm
9 - simultaneous az/el alarm
10 - azim slow speed alarm
11 - elev slow speed alarm
12 - comm port data alarm
13 - geo elev position alarm
14 - track config data alarm
15 - antenna/receiver alarm
16 - time or data alarm
17 - az/el ang display alarm
18 - pol options alarm
19 - polarization alarm
20 - az/el options alarm
Communications Protocol
www.researchconcepts.com
83