UALCONTROL

Setup user accuracy levels

Platform:

OEM719, OEM729, OEM7500, OEM7600, OEM7700, OEM7720, PwrPak7, CPT7, CPT7700, SMART7, SMART2

The UALCONTROL command is used to define User Accuracy Levels. User accuracy levels are user defined standard deviations thresholds, used to determine solution acceptability. Issuing the UALCONTROL command causes the BESTPOS and GPGGA solution types to be controlled via the specified thresholds, rather than by the solution source or mode. The new solution types are described in the table below.

User accuracy level supplemental position types and NMEA equivalents

Value	BESTPOS position type1	NMEA equivalent2
70	OPERATIONAL	4
71	WARNING	5
72	OUT_OF_BOUNDS	1
1. As reported in the BESTPOS log. 2. Refers to the GPGGA quality indicator (see the GPGGA log for details).

The SETBESTPOSCRITERIA command determines which standard deviations are compared against the provided thresholds.

UAL is useful for applications that rely upon specific solutions types being present in the BESTPOS or GPGGA logs. For example, if an agricultural steering system commonly requires an RTK fixed GPGGA solution type (4) to operate, and interruptions in RTK conventionally cause the GPGGA to switch to another solution type. This causes the steering system to disengage.

Message ID: 1627

Abbreviated ASCII syntax:

UALCONTROL Action [Operational_limit] [Warning_limit]

Factory default:

UALCONTROL disable

ASCII example:

UALCONTROL enable 0.10 0.20

Field	Field type	ASCII value	Binary value	Description	Format	Binary bytes	Binary offset
1	Command header	-	-	UALCONTROL header This field contains the command name for abbreviated ASCII or the message header for ASCII or Binary.	-	H	0
2	Action	DISABLE	0	Disables this feature	Enum	4	H
		ENABLE	1	Replace BESTPOS and GPGGA position types with OPERATIONAL, WARNING or OUT_OF_BOUNDS based on the entered standard deviations (refer to Table: User accuracy level supplemental position types and NMEA equivalents)
		CLEAR	2	Disable this feature and reset the entered standard deviations.
3	Operational_Limit			Standard deviation in metres to report OPERATIONAL	Double	8	H+4
4	Warning_Limit			Standard deviation in metres to report WARNING OUT_OF_BOUND reports when the standard deviation exceeds this value	Double	8	H+12