Configuration and Use Manual
00809-0100-1600
Integrate the meter with the control system
November 2022
8.6 Configure a Discrete Output
Use a Discrete Output to report specific meter or process conditions.
8.6.1 Configure Discrete Output Source
Display
ProLink III
Web browser
Menu → Configuration → Inputs/Outputs → Channel B → I/O Settings → Source
Device Tools → Configuration → I/O → Channels → Channel B → Discrete Output
Configuration → Inputs/Outputs → Channel B → Discrete Output
Discrete Output Source specifies the process condition or device condition that is reported by a Discrete
Output.
Procedure
Set Discrete Output Source to the desired option.
Default: Forward/Reverse
Postrequisites
If you set Discrete Output Source to Flow Switch, additional configuration is required.
Related information
Configure Flow Rate Switch
Options for Discrete Output Source
Option
Enhanced Event
1–5 (1)
Display
Basic Event x
Label
Prolink III
Enhanced Event x
Web browser
Enhanced Event x
State
ON
Discrete Output voltage
Event 1–2 (2)
Flow Rate
Switch
Forward/
Reverse
Indicator
Enhanced Event x
Event x
Flow Rate
Switch
Flow Switch
Indicator
N/A
Flow Rate
Switch
Flow Direction Forward Reverse
Indicator
Flow Direction
OFF
ON
OFF
ON
OFF
Forward flow
• Internally powered: 24 VDC
• Externally powered: Sitespecific
0 V
• Internally powered: 24 VDC
• Externally powered: Sitespecific
0 V
• Internally powered: 24 VDC
• Externally powered: Sitespecific
0 V
0 V
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Configuration and Use Manual
00809-0100-1600
Option
Display
Label
Prolink III Web browser
State Discrete Output voltage
Calibration in
Progress
Zero in Progress Calibration in
Progress
Reverse flow
Zero in Progress ON
• Internally powered: 24 VDC
• Externally powered: Sitespecific
• Internally powered: 24 VDC
• Externally powered: Sitespecific
Fault
Smart Meter
Verification
Batch Primary
Valve
Fault
Smart Meter
Verification
Batch Primary
Valve
Fault Indication
Meter
Verification
Failure
Valve
(3)
Batch Primary
Fault
Smart Meter
Verification
Batch Primary
Valve
OFF
ON
OFF
ON
OFF
ON
0 V
• Internally powered: 24 VDC
• Externally powered: Sitespecific
0 V
• Internally powered: 24 VDC
• Externally powered: Sitespecific
0 V
• Internally powered: 24 VDC
• Externally powered: Sitespecific
OFF 0 V
(1) Events configured using the enhanced event model.
(2) Events configured using the basic event model.
(3) The ProLink III v4.0 option is “Meter Verification Failure” for the Discrete Output Source field. This does match the table entry.
Important
This table assumes that Discrete Output Polarity is set to Active High. If Discrete Output Polarity is set to
Active Low, reverse the voltage values.
Important
Actual flow direction interacts with Sensor Flow Direction Arrow to determine the flow direction that the transmitter uses in processing. See the following table.
112 Micro Motion 1600 with Ethernet Transmitters
Configuration and Use Manual
00809-0100-1600
Integrate the meter with the control system
November 2022
Table 8-3: Interaction between actual flow direction and Sensor Flow Direction Arrow
Actual flow direction
Forward (same direction as Flow arrow on sensor)
Reverse (opposite from Flow arrow on sensor)
Setting of Sensor Flow Direction
Arrow
With Arrow
Against Arrow
With Arrow
Against Arrow
Flow direction sent to outputs and totalizers
Forward
Reverse
Reverse
Forward
Related information
Configure Sensor Flow Direction Arrow
8.6.2 Configure Discrete Output Polarity
Display
ProLink III
Web browser
Menu → Configuration → Inputs/Outputs → Channel B → I/O Settings → Polarity
Device Tools → Configuration → I/O → Outputs → Discrete Output → Polarity
Configuration → Inputs/Outputs → Channel B → Discrete Output → Polarity
A Discrete Output has two states: ON (active, asserted) and OFF (inactive). Two different voltages are used to represent these states. Discrete Output Polarity controls which voltage represents which state.
Procedure
Set Discrete Output Polarity as desired.
Default: Active High
8.6.3 Configure Discrete Output Fault Action
Display
ProLink III
Web browser
Menu → Configuration → Inputs/Outputs → Channel B → I/O Settings → Fault Action
Device Tools → Configuration → I/O → Outputs → Discrete Output → Fault Action
Configuration → Inputs/Outputs → Channel B → Discrete Outputs → Fault Action
Discrete Output Fault Action controls the behavior of a Discrete Output if the transmitter detects a fault condition.
Important
• The fault action is implemented only if Alert Severity is set to Failure. If Alert Severity is set to any other option, the fault action is not implemented.
• For some faults only: If Fault Timeout is set to a non-zero value, the transmitter will not implement the fault action until the timeout has elapsed.
NOTICE
Do not use Discrete Output Source as a fault indicator. If you do, you may not be able to distinguish a fault condition from a normal operating condition. If you want to use the Discrete Output as a fault indicator, see
Fault indication with a Discrete Output
.
Configuration and Use Manual 113
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November 2022
Configuration and Use Manual
00809-0100-1600
Procedure
Set Discrete Output Fault Action as desired.
Default: None
Related information
Interaction between Process Variable Fault Action and other fault actions
Options for Discrete Output Fault Action
Label
Upscale
Downscale
None (default)
Discrete Output behavior
Polarity=Active High
• Fault: Discrete Output is ON (24 VDC or site-specific voltage)
• No fault: Discrete Output is controlled by its assignment
Polarity=Active Low
• Fault: Discrete Output is OFF (0 V
• No fault: Discrete Output is controlled by its assignment
• Fault: Discrete Output is OFF (0 V
• No fault: Discrete Output is controlled by its assignment
• Fault: Discrete Output is ON (24 VDC or site-specific voltage)
• No fault: Discrete Output is controlled by its assignment
Discrete Output is controlled by its assignment
Fault indication with a Discrete Output
To indicate faults via a Discrete Output, set Discrete Output Source to Fault. Then, if a fault occurs, the
Discrete Output is always ON and the setting of Discrete Output Fault Action is ignored.
114 Micro Motion 1600 with Ethernet Transmitters
