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5.4
Output Configuration
The SP-003/SP-004 offers two discrete outputs that share circuitry with the discrete inputs. If an output is to be used
then the corresponding input pin must be set to
Disable
. See section
5.3.1 Discrete Input/Output (DIO)
for more
information.
There are three types of output options
–
On/Off, Pulse-Width Modulation (PWM), or Servo. See section
5.4.1
for
more information on each type.
Outputs may be configured as either
Active High
or
Active Low
. When configured as Active High the output
conducts normally and becomes high impedance when activated. When configured as Active Low the Open-Drain
output is high impedance normally and will conduct when activated.
An output may be controlled in one of three ways
–
a scaled mapping to an input, an on/off control from an input
setpoint, or as an input alarm. Sections
5.4.2
through
5.4.4
describe these output control methods.
Option
Value
Description
Active
LOW
When the output is inactive, it is in a high impedance state.
HIGH
When the output is active, it is in a high impedance state.
Figure 18: SYNC interface Output Configuration