Industrial grade I/O board - 8 analog I/O configurable in CAN and/or RS485

©UniSwarm 2021 - UIO8AD
2021/10/23 UDS4001C 4
1.2 Connectors
UIO8AD have 3 connectors.
J301
In/out and power supply
J203
CAN Fd/RS485
J204
CAN Fd/RS485
Figure 1.1: UIO8AD connectors
1.3 Electrical
1.3.1 Buses
Both buses (RS485 and CAN Fd) have 30 kV ElectroStatic Discharge (ESD) protection and high quality filters for noisy
environment.
A full 1kV isolation is present between BUS-side and power-side to prevent damage and avoid noise to propagate through
the bus.
Dual RJ45 socket (J203 / J204), both ports are connected together, to daisy chain the bus without external Y cable or
adapter.
The speed of both buses can be set by software. The board does not include a bus terminator, you need to add one to
each side of the bus.
Connectors J203-J204, CAN Fd / RS485
Pins Name Description
1 CAN H CAN Fd dominant
2 CAN L CAN Fd recessive
3 GND Ground, connected to 7
4 RS485 B RS485 B side
5 RS485 A RS485 A side
6 - Unused, but pins 6 of two connectors are connected together
7 GND Ground, connected to 3
8 - Unused, but pins 8 of two connectors are connected together
Figure 1.2: J203/J204 pins
1.3.2 Inputs, outputs and power supply
Inputs and output uses the same connector. Each way can be programmed by software as an input or as an output.
Inputs are protected against over-voltage and negative voltage.
Inputs
• The input can be used in analog mode. UIO can measure analog tension up to 12V with a 3mV resolution with a
maximal frequency of 500 kHz.