Dawn CONTROL-1500A Manual page 82

CONTROL-1500B Single Axis Antenna Controller
byte 30:
7 6 5 4
0 0 1 0 $ _ _ _ _
byte 31:
7 6 5 4
0 0 1 0 $ _ _ _ _
Alarm codes - See the system error codes in chapter 6 of the CONTROL-1500 manual.
a a a a $ a a a a
7 6 5 4
- - - -
byte 32:
The CONTROL-1500 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 the
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least significant nibble of alarm status - binary data
3 2 1 0
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
CW limit and an internal position of 661 corresponds to the CC limit.
Appendix E
least significant nibble
most significant nibble
0 - no alarm active
1 - LOW BATTERY alarm
2 - ANT alarm
3 – NOT USED
4 - COUNT alarm
5 – NOT USED
6 - LIMITS corrupt alarm
7 – NOT USED
8 – AUTOPOL CFG alarm
9 – NOT USED
10 – SLOW SPEED alarm
11 – NOT USED
12 - COMM PORT alarm
13 – ELEV ZERO (RC1500B) alarm
14 – TRACK CONFIG (RC1500B) or AGC
POLARITY (RC1500A) data alarm
NOT USED
16 – TIME/DATA (RC1500B) alarm
17 – NOT USED
18 – POL OPTIONS alarm
19 – ANT POL alarm
20 - OPTIONS alarm
Communications Protocol 75