In the Environment Variable List, it says that for $$SEQUENCE_FAIL_STATUS, a value of 1=guide/calibration error.
In the Wiki, the section on environment variables has a list of possible values for $$SEQUENCE_FAIL_STATUS, and says that a value of 1 means Unknown Error.
Which is correct?
This is the list of values possible, text in editor is old when the counter return only the guide error:
NO_ERROR = 0
UNKNOW_ERROR = 1
START_ERROR = 2
SETUP_NOT_CONNECTED = 3
CANNOT_LOAD_SEQUENCE_FILE = 4
TARGET_POINTING_DATA_ERROR = 5
TIME_START_END_CALCULATION_ERROR = 6
NO_NIGHT_CONDITION = 7
INTERNAL_ERROR = 8
GUIDE_CALIBRATION_ERROR = 9
PRECISE_POINTING_ERROR = 10
ACQUIRE_GUIDE_STAR_ERROR = 11
MERIDIAN_FLIP_WATCHDOG_RETRY_END = 12
START_GUIDING_RETRY_END_ERROR = 13
FSM_UNKNOW_STATUS = 14
TELESCOPE_NOT_CONFIGURED_CONNECTED_ERROR = 15
CAMERA_NOT_CONFIGURED_CONNECTED_ERROR = 16
ROTATOR_NOT_CONFIGURED_CONNECTED_ERROR = 17
GUIDE_NOT_CONFIGURED_CONNECTED_ERROR = 18
GUIDE_EMPASS_ERROR = 19
GUIDE_BINNING_NOT_SUPPORTED_ERROR = 20
SEQUENCE_EMPTY_ERROR = 21
SEQUENCE_NOT_PLANNED_ERROR = 22
FOLDER_CREATION_ACCESS_ERROR = 23
DOME_SLAVE_ERROR = 24
FLAT_DEVICE_ERROR = 25
TIME_WAIT_ERROR = 26
EXEC_EXTERNAL_ERROR = 27
COOLING_ERROR = 28
DONUTS_ERROR = 29
GUIDE_RESET_ERROR = 30
GOTO_ERROR = 31
ROTATOR_ERROR = 32
AUTOFOCUS_ERROR = 33
GUIDE_START_ERROR = 34
MOUNT_PARKED_ERROR = 35
MOUNT_TRACKING_STOPPED_WATCHDOG_RETRY_END = 36
CAMERA_SHOT_ERROR = 37
DITHERING_ERROR = 38
GUIDE_STOP_ERROR = 39
GOODNIGHT_ERROR = 40
FILTER_WRONG_INDEX = 41
Thanks! I appreciate the quick response. 
-Dan
How can I use $$SEQUENCE_FAIL_STATUS in an error trap?
Occasionally my mount has a glitch and seems to stop communicating with the ASCOM hub, and I want to trap that error. I’d like to use a command like:
If Error
DO IF DECIMAL_VALUE (Extended): $$SEQUENCE_FAIL_STATUS is Equal to 1
or similar. However I can’t seem to get it to work. Is my syntax wrong? I’ve also tried ##$$SEQUENCE_FAIL_STATUS##
Does anyone have an example of this in a script?
I’ve had another try at this, and below I’ve added my script snippet.
I think my problem might have been that $$SEQUENCE_FAIL_STATUS is a string variable and I was using syntax for a numeric.
I have no idea whether this approach will enable me to completely trap and manage the error (I still don’t know where the glitch is starting) but I really like the error trapping enabled in dragscripts.
Can anyone give me some advice on my syntax?
120 - Block: Get the shots
121 - Update String: Last_block - “Get the shots”
122 - Enable Events
123 - DO IF DOME/ROOF CLOSED
124 - Open Shutter
125 - Sequence: Start and End from Sequence - C:\Users\Obser\OneDrive\Documents\Voyager\ConfigSequence\Tonights_5x300s_HaOiii.s2q
126 - If Error
127 - Remark: There’s a good chance that the first time the sequence runs the dome will still be moving when autofocus starts.
128 - Remark: $$SEQUENCE_FAIL_STATUS should help us determine what to do
129 - DO IF STRING VALUE: $$SEQUENCE_FAIL_STATUS is Equal to “37”
130 - Remark: CAMERA_SHOT_ERROR = 37 seems to be when the mount driver dies.
131 - Close Shutter
132 - Raise Emergency Exit Event
133 - DO IF STRING VALUE: $$SEQUENCE_FAIL_STATUS is Equal to “10”
134 - Remark: PRECISE_POINTING_ERROR = 10 would be if the plate solving started before the dome stopped
135 - Remark: Wait 30 seconds, then start the sequence again
136 - Wait Time: 00:00:30 [hh:mm:ss] Interval
137 - GoTo Block: Get the shots
138 - If SKIPPED
139 - Remark: If the outcome is “skipped” it probably means the target has sunk.
140 - GoTo Block: Normal end
141 - Repeat Block Until Astronomical Night End: Manual Data [LAT:38° 48’ 16" S LON: 144° 40’ 35" E] - Offset (Before) 00:30:00 [hh:mm:ss]
142 - Block: Normal end