10.3.2 Configure Discrete Output Polarity
ProLink III Device Tools > Configuration > I/O > Outputs > Discrete Output
Field Communicator Configure > Manual Setup > Inputs/Outputs > Discrete Output > DO Polarity
Overview
Discrete outputs have two states: ON (active) and OFF (inactive). Two different voltage
levels are used to represent these states. Discrete Output Polarity controls which voltage
level represents which state.
Procedure
Set Discrete Output Polarity as desired.
The default setting is Active High.
Options for Discrete Output Polarity
Options for Discrete Output PolarityTable 10-5:
Polarity Description
Active High
• When asserted (condition tied to DO is true), the cir-
cuit draws as much current as it can, up to a maximum
of 10 mA.
• When not asserted (condition tied to DO is false), the
circuit draws less than 1 mA.
Active Low
• When asserted (condition tied to DO is true), the cir-
cuit draws less than 1 mA.
• When not asserted (condition tied to DO is false), the
circuit draws as much current as it can, up to a maxi-
mum of 10 mA.
10.3.3 Configure Discrete Output Fault Action
ProLink III Device Tools > Configuration > Fault Processing
Field Communicator Configure > Manual Setup > Inputs/Outputs > Discrete Output > DO Fault Action
Overview
Discrete Output Fault Action controls the behavior of the discrete output if the transmitter
encounters an internal fault condition.
Integrate the meter with the control system
104 Micro Motion
®
Gas Specific Gravity Meters (SGM)