User Manual MN032006EN
Effective May 2018
415U Condor-long-range wireless I/O and gateway
Analog inputs
The configuration for analog inputs defines how change events are reported (dead band) and how the value is scaled when it is reported. The dead-band value limits the number of event reports generated by the analog input when the input is configured in polling class 1, 2, or 3. Once the analog input generates a change event, no additional events are generated until the register value has changed by more than the dead-band value.
To configure how a DNP3 variable is scaled, you can select from a list of commonly used scaling values or configure your own custom scaling by entering two reference points. A graph provides feedback on the configured scaling and the configured dead band
(see
Figure 70
).
Figure 70. DNP3 analog inputs
Analog Input
Register
The I/O point register in the 415U device. For a
detailed description, see “I/O configuration” on
page 40
. Select the register by name from the
drop-down menu in the Edit dialog box, or click the
button to list all registers by number.
Polling Class
See “I/O configuration” on
page 40
.
Scaling Select automatic scaling to match the available input types or select custom scaling if you want to report data in your system engineering values.
0–20 mA
—Use this scaling to report the value from a 0–20 mA analog input such as analog inputs 1–4 in current mode. The value is reported in microamps
(20 mA reports in DNP3 as 20,000 μA).
0–5 V
—Use this scaling to report the value from a
0–5 V analog input such as analog inputs 3 and 4 when used in voltage mode. The value is reported in millivolts (5 V reports in DNP3 as 5,000 mV).
0–20 V
—Use this scaling to report the value from a 0–20 V analog input such as analog inputs 1 and
2 used in voltage mode. The value is reported in millivolts (5 V reports in DNP3 as 5,000 mV).
0–40 V
—Use this scaling to report a value from a supply voltage input, such as battery voltage or supply voltage. The value is reported in millivolts (24
V reports in DNP3 as 24,000 mV)
Note
: When reading this value as a DNP3 integer value, it will not measure voltages above 32.768 V since the integer value is limited to a maximum of 32768
.
0–100 Hz
—Use this scaling for pulse rate inputs configured for full-scaled to 100 Hz.
No Scaling
—Use this option when you want DNP3 to report the raw register value without any scaling.
Dead Band
Note
: If you change the device’s analog input scaling using the I/O option in the project tree, it will affect the scaling of DNP3 analog input points. The DNP3 values are derived by applying this scaling to the register values after they are scaled by the device’s analog scaling. For more
information on analog input scaling, see “Analog inputs” on
page 26
.
The dead-band value for the analog input, expressed as a desired change in the register value. The dead-band value limits the number of event reports generated by the analog input when the input is configured in polling class 1, 2, or 3. Once the analog input generates a change event, no additional events are generated until the register value has changed by more than the dead-band value.
Dead Band
(Engineering
Value)
The dead-band value for the analog input, expressed as a desired change in the measured value. Changes to this field are reflected in the Dead Band field described above. You can edit either of these fields to set the dead band.
Register Low The register value for the first reference point.
Default scaling on 4–20 mA analog inputs sets this to 16384 for 4 mA input current, and 49152 for
20 mA input current.
Register High The register value for the second reference point.
Engineering
Low
Engineering
High
Custom
—Use this option to apply custom scaling.
Select the scaling option closest to the desired scaling, then select Custom, and enter values for
Register High, Register Low, Engineering High, and
Engineering Low fields described below.
The desired DNP3 value for the first reference point.
Default scaling results in voltages being reported in mV, and currents being reported in microamps.
The desired DNP3 value for the second reference point.
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415U Condor-long-range wireless I/O and gateway
User Manual MN032006EN
Effective May 2018
Analog outputs
The configuration for analog outputs defines any additional scaling that must be applied to the DNP3 value to set the correct register value. You can select default scaling to suit most applications, or configure custom scaling for the analog output if you need the value scaled to particular engineering units. A graph provides feedback to
show the configured scaling (see
Figure 71
).
Physical analog outputs generate 4 mA for a register value of 16384, and 20 mA for a register value of 49152. The default scaling allows the DNP3 values to be sent as a µA value. For example, a DNP3 value of 4000 results in 4 mA; a DNP3 value of 20000 results in
20 mA output current.
Engineering High The DNP3 value for the second reference point.
When this value is written by the DNP3 master, the 415U register receives the value in Register
High.
Register Low The register value set in the 415U for the first reference point. The 415U memory register receives this value when the DNP3 master writes the value listed in Engineering Low.
Register High The register value for the second reference point, corresponding to the DNP3 value in Engineering
High.
Figure 71. DNP3 analog outputs
Analog Output
Register
The I/O point register in the 415U device. For a
detailed description, see “I/O configuration” on
page 40
. Select the register by name from the
drop-down menu in the Edit dialog box, or click the
button to list all registers by number.
See “I/O configuration” on
page 40
.
Polling Class
Scaling Select automatic scaling to match the available output types, or select custom scaling if you want to report data in your system engineering values.
0–20 mA
—Use this scaling to send the value from a 0–20 mA analog output such as analog outputs
1 and 2. The value is set in microamps. Set the
DNP3 register to 20,000 in order to set the output to 20 mA (or 20,000 μA).
0–5 V
—Use this scaling to report the value from a 0–5 V analog input such as analog Inputs on
115S-13 configured for 0–5 V mode.
No Scaling
—Use this option when you want to write the raw register value from the DNP3 master without any scaling.
Custom
—Use this option to apply custom scaling.
Select the scaling option closest to the desired scaling, then select Custom, and enter values for the Register High, Register Low, Engineering High, and Engineering Low fields described below.
Engineering Low The DNP3 value for the first reference point. When this value is written by the DNP3 master, the 415U register receives the value in Register Low.
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