RESEARCH CONCEPTS RC2000C Manual page 88

82 RC2000C Polar Tracking Antenna Controller
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 $ _ _ _ _
byte 29:
7 6 5 4
0 0 1 0 $ 0 0 _ _
bytes 30-31:
byte 30:
7 6 5 4
0 0 1 0 $ _ _ _ _
Research Concepts, Inc. • 5420 Martindale Road • Shawnee, Kansas 66218-9680 • USA www.researchconcepts.com
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.
elevation movement/alarm status - binary data
3 2 1 0
0 0 0 0 no alarms or movement
0 0 1 0 down movement pending
0 0 1 1 up movement pending
0 1 0 0 down movement in progress
0 1 0 1 up 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 0 1 0 limit alarm active
1 1 0 0 drive alarm active. This is triggered by an overcurrent
condition.
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.
least significant nibble of alarm status - binary data
3 2 1 0
Appendix E
no polarization movement
cw jog in progress
ccw jog in progress
go to H or V in progress
least significant nibble
Communications Protocol