Resolution Values; Offset/Polarity Values - Automated Logic SE6166 Technical Instructions

Resolution values

Resolution is not particular to a type of input or output, but the driver handles analog and
digital (binary) inputs and outputs differently. To set these values appropriately, you
should understand how the driver uses them.
Resolution
Analog Input
(BAI)
Analog Output
(BAO)
Digital Inputs
and Outputs
Offset/Polarity
Offset/Polarity is not particular to a type of input or output, but the driver handles analog
and digital (binary) inputs and outputs differently. To set these values appropriately, you
values
should understand how the driver uses them.
Offset/Polarity
Analog Input
(BAI)
Analog Output
(BAO)
Digital (Binary)
Input (BBI)
Digital (Binary)
Output (BBO)
SE6166 Controller • Rev. 4/13/2011
Notes
The driver truncates the microblock's present value according to the
resolution.
EXAMPLE If the calculated present value is 13.789 and you set the
Resolution to 0.1, the control program uses 13.7 for any calculations
downstream from the microblock.
The driver truncates the wire input value to the microblock before
performing any scaling calculations.
EXAMPLE If the wire input value is 13.789 and you set the
Resolution to 0.1, the microblock uses 13.7 for any scaling
calculations.
N/A
Notes
Offset value (positive or negative) adds a fine adjustment to a sensor
reading after all scaling for calibration.
EXAMPLE If a sensor reads 74.9°F when the actual measured value
is 73.6°F, enter an Offset of –1.3 to calibrate the sensor to the
measured value.
You can use the Offset value (positive or negative) to calibrate an
output, but you generally do not need to. If used, the driver adds the
offset value to the wire input value before performing any scaling
calculations to determine the SE6166's output.
Polarity determines the microblock's present value when no signal is
received from the equipment.
When no signal is received from the equipment, if Polarity is set to:
normal—present value is off
reversed—present value is on
Polarity determines the SE6166's output based on the control
program's signal to the microblock.
When the control program's signal to the microblock is on, if Polarity
is set to:
normal—output is on
reversed—output is off
NOTE Regardless of Polarity, the output will be off if the SE6166
loses power.
15 © 2011 Automated Logic Corporation