Analog Outputs - M2M LOGIC io Technical Manual

RTCU LX4 pro Technical Manual V1.00
Advanced Industrial M2M/IoT Gateway

Analog Outputs

The RTCU LX4 pro has two analog outputs, which can be configured individually to work either as
voltage or current outputs using the configuration jumpers. The range in voltage mode is 0..10 VDC,
and in current mode 0..20mA. The resolution of the digital-to-analog converter is 10bit or 1024 in
decimal scale.
The decimal value for 10V/20mA output is 1023, and 512 for 5V/10mA.
The output signal is connected to the external equipment between AOUTx and AGND. AGND must
be connected to the reference of the connected equipment. Please be aware that deviations may occur,
as the system is very noise-sensitive. Avoid long unshielded wires and significant fast-changing
signals routed parallel to the analog signals. In current mode, the specifications for the analog output
are only valid for a maximum load is maximum of 250Ω.
The inputs are low-pass filtered, ESD- and transient protected.
Please notice: The RTCU LX4 pro unit must be supplied with a minimum of 12VDC in order for the
analog outputs to work according to the specifications.
By default, the outputs are configured as voltage outputs. For replacement and configuration of the
hardware jumpers inside the device, please refer to the device configuration guide in Appendix D.
Analog output pins
Pin Name
20 AOUT1
21 AOUT2
26 AGND
Specification for each analog output (voltage mode):
Voltage
Resolution
Precision
Load
Specification for each analog output (current mode):
Current
Resolution
Precision
Load
Logic IO ApS.
Holmboes Allé 14
8700 Horsens
Denmark
Description
Analog output 1
Analog output 2
Analog Ground
Min. Typ. Max.
0 - 10
- - 10
- 0.5 0.8
10 - -
Min. Typ. Max.
0 - 20
- - 10
- 0.5 0.8
- - 250
Unit
VDC Protected against transients and
Bit low-pass filtered
%FSR
kΩ
Unit
mA Protected against transients and
Bit low-pass filtered
%FSR
Ω
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