R'IO: Mini PLC
Mini PLC is a compact and affordable solution for non-real-time input monitoring applications. It features analog & digital inputs, relays, and RS-485 connectivity. In addition, this device supports flexible wireless networking options such as LoRa, WiFi, or cellular connectivity, making it suitable for remote monitoring and control applications.
Technical Specifications
The following table outlines the capabilities of the device.
Inputs
8x 5…24V Isolated digital inputs with common ground
4x 0…10V Filtered analog inputs with common ground
Outputs
2x AC 240V / DC 30V 10A SPST relays with COM & NO connections
Wireless connectivity
M.2 Key-E Socket for type 2230-XX-E modules
Wired connectivity
Half-Duplex RS-485 Transceiver
Onboard sensors
Internal temperature measurement
Memory
Encrypted system configuration 2.000 point telemetry history with timestamp
Microcontroller
STM32 L4 Series ultra-low power MCU 32-bit ARM Cortex-M4 80MHz, 256KB ROM, 64KB RAM
Power options
DC 24V w/ relays
DC 5…24V w/o relays
Antenna
Internal or external (SMA) options
LEDs
On-board status and power LEDs
User input
On-board configuration button
Compatible Connectivity Modules
The following connectivity options work with R'IO.
M.2 BLE 802.15.4 ModuleM.2 CAT-M NB-IoT ModuleM.2 Developer ModuleM.2 LoRa ModuleM.2 WiFi ModuleCommunication Protocols
R'IO's stock firmware supports the following communication protocols. You can develop custom firmware to add more.
CoAPLoRaWANMatterModbusMQTTPhysical Properties
This table shows the mechanical properties of the device.
Mounting Style
DIN 35mm Top Hat Rail: EN 50022 Screw Mount
Dimensions
70w x 90h x 60d mm
Weight
< 200g
Mounting Options
The unit has two mounting options: the DIN rail and the screw mount.
Environmental Conditions
Environmental Conditions refer to the physical and atmospheric conditions surrounding the device.
Operating Ambient Temperature
0°C…+60°C
Relative Humidity
0°C…+30°C: 80% +30°C…+60°C: 50%
Pollution Degree
PD2
Altitude
< 2000m AMSL
Vibration (5 ≤ f ≤ 9 Hz)
1,75 mm amplitude sinus 3,5 mm amplitude random
Vibration (9 ≤ f ≤ 150 Hz)
0,5 g acceleration sinus 1,0 g acceleration random
Storage
-20°C…+60°C
10%…90% rH
Electrical Characteristics
This table indicates the electrical specifications of the device.
Main Supply
DC 24V w/ relays
DC 5…24V w/o relays
Digital Inputs
DC 12…24V (Isolation Voltage: 3,750Vrms)
Analog Inputs
DC 0…10V
Relays
AC 240V 10A
DC 30V 10A
RS-485
-7…+12V (No internal termination)
RTC Battery
DC 3V Super-capacitor (optional)
M.2 Port
PCIe M.2 Key-E
DC 3.3V Supply, 1.8V SPI I/O
Internal Fuse
DC 60V 6A 1206 Case Slow-burning
Absolute Maximum Ratings
Absolute maximum ratings indicate the maximum electrical or environmental parameters this device can withstand without damage.
Stresses above the absolute maximum ratings listed in the table may cause permanent damage to the device. These are stress ratings only, and the functional operation of the device under these conditions is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.
Main Supply
DC 26V w/ relays DC 30V w/o relays
Digital Inputs
DC 30V
Analog Inputs
DC 15V
Relays
AC 240V 10A
DC 30V 10A
RS-485
-7…+12V
RTC Battery
DC 3.3V
Connectivity Options
This table lists the communication options of the device.
Connectivity Socket
PCIe M.2 Key E Socket: 3.3V Power domain, 1.8V I/O, USART, SPI
Connection Diagram
This diagram visualizes how the PLC connects with the surrounding.
Pin Description
This table explains the function and electrical characteristics of each pin or terminal on the device.
T-01
Power
DC +24V Supply
Supply voltage input (+24V)
T-02
Power
System GND
Supply ground
T-03
Digital Input
Common GND
Digital inputs shared ground (isolated from the system)
T-04
Digital Input
Channel 1
Isolated digital input channel 1 (+5…24V)
T-05
Digital Input
Channel 2
Isolated digital input channel 2 (+5…24V)
T-06
Digital Input
Channel 3
Isolated digital input channel 3 (+5…24V)
T-07
Digital Input
Channel 4
Isolated digital input channel 4 (+5…24V)
T-08
Digital Input
Channel 5
Isolated digital input channel 5 (+5…24V)
T-09
Digital Input
Channel 6
Isolated digital input channel 6 (+5…24V)
T-10
Digital Input
Channel 7
Isolated digital input channel 7 (+5…24V)
T-11
Digital Input
Channel 8
Isolated digital input channel 8 (+5…24V)
B-01
Relay
Channel 1 COM
Relay 1 common connection
B-02
Relay
Channel 1 NO
Relay 1 normally open connection
B-03
Relay
Channel 2 COM
Relay 2 common connection
B-04
Relay
Channel 2 NO
Relay 2 normally open connection
B-05
Com
RS-485 Terminal A
RS-485 Terminal A connection
B-06
Com
RS-485 Terminal B
RS-485 Terminal A connection
B-07
Analog Input
Common GND
Analog input ground (Shared with system ground)
B-08
Analog Input
Channel 1
Analog input channel 1 (0…+10V)
B-09
Analog Input
Channel 2
Analog input channel 2 (0…+10V)
B-10
Analog Input
Channel 3
Analog input channel 3 (0…+10V)
B-11
Analog Input
Channel 4
Analog input channel 4 (0…+10V)
Libraries and Samples
Some of our devices come with firmware that automatically utilizes the module without requiring any coding. For development kits or further customization, you may choose to use the following libraries and samples to create a custom application.
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