Dawn CONTROL-1500A Manual page 81

CONTROL-1500B Single Axis Antenna Controller
byte 26:
7 6 5 4
0 0 1 0 $ _ _ _ _
byte 27:
7 6 5 4
0 0 1 0 $ _ _ _ _
Note - Higher value status codes have priority over lower value ones, i.e. if as part of an
auto move command the antenna is moving west the status will be reported as 'auto
move in progress' rather than 'west movement in progress'.
byte 28:
7 6 5 4
0 0 1 0 $ 0 0 0 0
byte 29:
7 6 5 4
0 0 1 0 $ 0 0 _ _
bytes 30-31:
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user_interface_position ... is the polarization position displayed on the
display of the user interface.
Note that the division defined above is an integer division. The result is
rounded DOWN to the closest integer.
Please see byte 32 of this command's reply message for more
information on polarization position representations.
polarization code and autopol status - binary data
3 2 1 0
0 x x x * auto pol disabled
1 x x x auto pol enabled
x 0 0 0 'H' polarization code displayed
x 0 0 1 'h' polarization code displayed
x 0 1 0 'V' polarization code displayed
x 0 1 1 'v' polarization code displayed
x 1 0 0 no polarization code displayed
* Note, 'x' means don't care
azimuth movement/alarm status - binary data
3 2 1 0
0 0 0 0 no alarms or movement
0 0 1 0 east movement pending
0 0 1 1 west movement pending
0 1 0 0 east movement in progress
0 1 0 1 west movement in progress
0 1 1 1 an auto move is in progress
1 0 0 0 runaway alarm active
1 0 0 1 jammed alarm active
1 1 0 0 drive alarm active. This is triggered by an overcurrent condition.
Not Used
3 2 1 0
polarization movement status - binary data
3 2 1 0
0 0
0 1
1 0
1 1
These bytes are used to encode the alarm code. The alarm code (a byte value) specifies
the alarm condition that is presently active. See the table below for the
various alarm codes.
Appendix E
no polarization movement
cw jog in progress
ccw jog in progress
go to H or V in progress
Communications Protocol 74