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Power Brick Controller User Manual
Connections and Software Setup 72
Serial Encoder Power-On Absolute Position Setup
The absolute position is computed directly from the serial data registers, and set up using the following key
structure elements:

Motor[ x ].pAbsPos , typically = PowerBrick[ i ].Chan[ j ].SerialEncDataA.a

Motor[ x ].AbsPosSf , typically = 1 with serial encoders

Motor[ x ].AbsPosFormat :
0 0 0 0 0 0 0 0
Motor[ x ].AbsPosFormat = $
Note
Motor[ x ].PowerOnMode (value of 2) specifies an absolute position
read on power up. Alternately, # n HMZ from the online terminal or a
HOMEZ n , where n is the motor number, from a PLC can be issued
to retrieve the absolute position.
Following, are examples for setting up the absolute position read with various serial encoders. These
settings depend primarily on the location of the position data in the serial encoder data A and B registers.
Total Number of bits
a a b b c c d d
Shift Register A data left by this much first
= 000 Unsigned binary
= 001 Signed binary
= 010 ($2) Gray Code, convert to unsigned binary
= 011 ($3) Gray code, convert to signed binary
= 0 No additional shift
= 1 Shift the data in Register A 16 more bits
Number of the starting bit
of the data from register B
Number of the starting bit
of the data from register A