Data field (continued)
Bytes
Encoding
Value/Range
Description
3, 4
SIGNED16
-1000 – 1000
-1000
-1
1
1000
requested flow
– corresponds to max flow to the left
– corresponds to minimum flow to the left
– corresponds to minimum flow to the right
– corresponds to max flow to the right
5
UNSIGNED8
0
255
Apply open-loop flow-to-spool-position scaling
Apply closed-loop flow-to-spool-position scaling
StartValveAutoCalibration
Used for performing an auto-calibration of the PVED-CL to the valve. The valve dead-bands are
automatically found and stored in the PVED-CL.
Auto-calibration may be useful for fine-tuning the PVED-CL and the valve when installed in its final
environment.
This ensures optimum open-loop and closed-loop steering performances.
Auto-calibration is also useful if the PVED-CL needs to be replaced in the field.
CAN message
Priority
6
PGN
61184
XID
0x0FB6 (MSB first)
Occurrence
when required
Modes
calibration
Sent by
MMI
Sent to
PVED-CL
Data field
Bytes
Encoding
Value/Range
Description
1, 2
UNSIGNED16
0x0FB6 (MSB first)
extended message identifier (XID)
3, 4
UNSIGNED16
0 – Max
XspStartSearch – the spool position set-point (Xsp)
at which the auto-calibration starts.
Max = 250 + XspCalibrationOffset
XspCalibrationOffset is the parameter value stored at
parameter index 758.
5
UNSIGNED8
1 – 255
XspIncrementSize – the spool position set-point
increment size (∆Xsp) while searching for the
specified minimum steered wheel position (Yact)
difference.
6
UNSIGNED8
1 – 255
YactDiffThreshold – the minimum steered wheel
position (Yact) difference threshold
The difference is measured in the time-out period.
7, 8
UNSIGNED16
1 – 65535
Time-out period - defines the time [ms] that each
spool position set-point is active in before the next
increment.
Technical Information
PVED-CL Communication Protocol, version 1.38 Technical Information
Control
28
11079551 • Rev BA • July 2014