Analog Inputs
YuDash devices can acquire analog signals directly from field sensors, transmitters and measurement instruments.
Depending on the product and model, supported analog interfaces may include:
0–20 mA / 4–20 mA current inputs
0–5 V voltage inputs
High-range DC voltage inputs
Low-level differential voltage inputs
This page explains the common YuDash analog-input configuration workflow. FELYX is used as the working example. Always refer to the relevant product interface and model-selection pages for the physical terminals and input ranges available on a particular device.
For a simple linear conversion, the Input, Output and Multiplier settings in the Analog Wizard can perform the required conversion directly.
The separate Data Scaling feature is therefore not required for every analog input.
Example: Reading 0–20 mA Inputs
This example demonstrates direct measurement of four 0–20 mA analog signals using FELYX.
A multi-channel analog signal generator is connected to analog inputs A1–A4 and adjusted to approximately:
5 mA
10.7 mA
15.1 mA
20 mA
The Analog Wizard is configured so that the resulting YuDash variables directly represent the measured current in mA. The separate Data Scaling feature is not used in this example.
Connect the analog signals
Connect the analog current outputs to the required FELYX current-input channels.
For this example:
Signal
FELYX input
Current input 1
A1
Current input 2
A2
Current input 3
A3
Current input 4
A4
Connect the corresponding signal return as required by the product terminal layout.
The four signal-generator channels are set to approximately 5.06 mA, 10.71 mA, 15.13 mA and 20.41 mA.
Configure the analog channels
The Analog Wizard opens the Channel Matrix.
Each row represents one physical analog input. Enable the required channels and configure their signal range and variable names.
For this example:
A1
0–20 mA
0–20
0–20
analog_1
A2
0–20 mA
0–20
0–20
analog_2
A3
0–20 mA
0–20
0–20
analog_3
A4
0–20 mA
0–20
0–20
analog_4
The important Channel Matrix fields are:
Enable — enables processing of that channel.
Topology — selects the physical input and electrical input type.
Input Min–Max — expected electrical input range.
Output Min–Max — value range generated from the measured input.
Multiplier — final multiplier applied to the value.
Variable — name used for monitoring, logging and telemetry.
Backup Variable — optional and may be left blank when not required.
In this example, both the input and output ranges are 0–20, and the multiplier is 1. The resulting variable therefore directly represents the measured current in mA.
For example:
10.7 mA input → approximately 10.7 in the YuDash variable
No separate Data Scaling configuration is required for this direct reading.
Select Save & Close after completing the channel configuration.
Verify the analog values
Open the Live Dashboard and verify that the configured analog variables are updating.
In this example, the dashboard displays:
Variable
Measured value
analog_1
5.086
analog_2
10.773
analog_3
15.159
analog_4
20.046
These values correspond closely to the current levels applied using the analog signal generator.The live acquisition path is:
0–20 mA Signal → Analog Input → YuDash Variable → Live Dashboard
The Analog Wizard is used during configuration to define the input range, output range, multiplier and variable mapping.
This confirms that the analog channels are configured correctly and that the acquired values are available for subsequent monitoring, data logging and cloud telemetry.
Voltage Inputs
FELYX also supports voltage-based analog inputs.
On the FELYX81 used in this example, the analog terminal group is arranged as:
A1 · A2 · A3 · A4 · GND · C5 · C6 · C7 · D8 · GND
The inputs are divided by electrical range:
Input group
Channels
Input type
Type A
A1–A4
0–20 mA
Type C
C5–C7
0–5000 mV
Type D
D8
0–90000 mV
Understanding the FELYX voltage terminals
The right-side analog terminal block contains both current and voltage inputs.
C5, C6 and C7 are intended for signals up to 5000 mV (5 V).
D8 is a high-range voltage input intended for applications such as battery or DC supply-voltage monitoring.
The adjacent GND terminals provide the signal reference.
The channel type must match the electrical signal being connected.
Type C — 0–5 V Inputs
Type C channels are used for voltage signals from 0 to 5000 mV (0–5 V).
In this example, channels C5 and C6 are enabled in the Analog Wizard with:
Channel
Topology
Input
Output
Multiplier
Variable
C5
0–5000 mV
0–5000
0–5000
1
analog_5
C6
0–5000 mV
0–5000
0–5000
1
analog_6
The same figure also shows the corresponding values on the Live Dashboard.
In this example:
analog_5≈ 3004.8 mVanalog_6≈ 2552.6 mV
Because the Input and Output ranges are both set to 0–5000 and the multiplier is 1, the YuDash variables represent the measured voltage directly in millivolts.
Because the Input and Output ranges are both set to 0–5000 and the multiplier is 1, the YuDash variables represent the measured voltage directly in millivolts.
For example:
If the value is required directly in volts, set the multiplier to 0.001.
The Type-C channel therefore performs the voltage measurement directly; no separate Data Scaling configuration is required for this simple conversion.
Type D — Battery / High-Range Voltage Input
The D8 channel is used for higher DC voltage measurements such as battery or supply-voltage monitoring.
D8 supports a measurement range of:
0–90000 mV (0–90 V)
In this example, D8 is enabled in the Analog Wizard with the following settings:
Channel
Topology
Input
Output
Multiplier
Variable
D8
0–90000 mV
0–90000
0–90000
1
Battery_Volt
The same figure shows the corresponding value on the Live Dashboard.
In this example:
Battery_Volt≈ 8479 mV
Because the Input and Output ranges are both set to 0–90000 and the multiplier is 1, the YuDash variable represents the measured voltage directly in millivolts.
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