SeaSpace TeraScan 1.5M Operation And Maintenance Manual page 196

S
180 SeaSpace Corporation
PCU Status. Response is four ASCII characters representing the system status according to
the table below. PCU status bits. PCU response: "S1234", CR, LF, ">"
(Items marked by * are different from the 2.4m, 3.6m, and 4.5m antennas.)
BYTE 1
Bit 7 = 0: No dish scan; 1: Dish scan
(should always be 0)
Bit 6 = 1
Bit 5 = 1: Fast Mode; 0: Std Mode
Bit 4 = 1: Sat Ref Mode; 0: Gyro Mode
*Bit 3 =1: Moving to Cross-level Target
*Bit 2 =1: Unwrap
Bit 1 = DI2 Status
Bit 0 = 1: Downconverter Fault
0: Downconverter OK
BYTE 3 (Not Used)
Bit 7 = 0
Bit 6 = 1
Bit 5 = 0
Bit 4 = 0
Bit 3 = 0
Bit 2 = 0
Bit 1 = 0
Bit 0 = 0
Some common status values for ac 1 st follow (XX = any value):
Antenna idle. No tracking in progress.
40 40 40 60
PCU initializing. Other errors (such as communications errors) may also
XX XX X2 XX
be shown. Ignore these errors until PCU initialization is complete.
Cross-level torque error.
41 XX XX XX
Elevation torque error.
42 XX XX XX
Azimuth torque error.
44 XX XX XX
Azimuth reference error.
48 XX XX XX
BYTE 2
*Bit 7 = Elevation Targeting
Bit 6 = 1
Bit 5 = Azimuth Targeting
Bit 4 = 0
Bit 3 = Heading Valid
Bit 2 = Error Detected
(see bytes 3 & 4)
Bit 1 = 1: Initializing PCU
0: Not Initializing PCU
Bit 0 = 1: Searching
0: Signal > Threshold
BYTE 4 (PCU Errors)
Bit 7 = 0
Bit 6 = 1
Bit 5 =
Bit 4 =
Bit 3 = 1: Azimuth Reference Error
Bit 2 = 1: Azimuth Servo Limit Error
(Torque Error)
Bit 1 = 1: Elevation Servo Limit Error
(Torque Error)
Bit 0 = 1: Cross-level Servo Limit Error
(Torque Error)