User Manual

TMC5031-EVAL Manual / Firmware V1.00 (Rev. 1.00 / 2013-FEB-22) 24
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6.4.5 Driver Status Information
This dialogue shows all driver error flags of the two motor drivers.
The flags are related to the DRV_STATUS register. Blue marked flags
are set.
0X6F, 0X7F: DRV_STATUS – STALLGUARD2 VALUE AND DRIVER ERROR FLAGS
Bit
Name
Function
Comment
31
stst
standstill indicator
This flag indicates motor stand still.
30
olb
open load indicator
phase B
1: Open load detected on phase A or B
Hint: This is just an informative flag. The driver takes no action
upon it. False detection may occur in fast motion and
standstill. Check during slow motion, only.
29
ola
open load indicator
phase A
28
s2gb
short to ground
indicator phase B
1: Short to GND detected on phase A or B
The driver becomes disabled. The flags stay active, until the
driver is disabled by software or by the ENN input.
27
s2ga
short to ground
indicator phase A
26
otpw
overtemperature pre-
warning flag
1: Overtemperature pre-warning threshold is exceeded.
The overtemperature pre-warning flag is common for both
drivers.
25
ot
overtemperature flag
1: Overtemperature limit has been reached. Drivers become
disabled until otpw is also cleared due to cooling down of the
IC.
The overtemperature flag is common for both drivers.
15
fsactive
full step active
indicator
1: Indicates that the driver has switched to fullstep as defined
by chopper mode settings and velocity thresholds.
Table 6.6 Abridgement of DRV_STATUS register
Figure 6.16 Motor driver error flags