Avtron ADDvantage-32, Manual, Page: 173 / 290

Control Block Description
ADDvantage-32
4-111
On a low to high transition of the RES bit, OUT resets to the REF value.
DIF is equal to the change of the setpoint.
If ABS = 1, then DIF =
OUT - REF (within the limits)
If ABS = 0, then DIF =
REF
OUT
(within the limits)
RETENTIVE
BLOCK
On powerup of the drive, OUT will be initialized under the following conditions:
If RET = 0 and ABS = 0,
then DIF = 1 (within limits)
If RET = 0 and ABS = 1,
then DIF = 0 (within limits)
If RET = 1, then DIF is not initialized.
If ABS = 0, then OUT = INP × DIF.
If ABS = 1, then OUT = INP + DIF.
If a retentive setpoint is desired, configure a retentive point Y***:RET SETPT* to DIF
so it updates automatically upon powerup. Configure the RES input to a zero bit to
prevent resetting the output to the REF value instead of the retentive value.