Custom and Standard RS485 Modbus modules for data acquisition and IO control. This specialised ranges allows control of analogue and digital output puts aswell as sampling analogue signals and digital inputs
We provide full application support. If you need assistance in selecting from our extension specialised range please contact us and we will provide guidance on the best module to select from
A-1 Series RS485 Modbus and USB Data acquisition and IO Control
Overview of capability
- Digital Input
- Input
- Output
- Analog
- Input
- Output
- Temperature Sensor
- Thermistor
- PT100
- PT1000
- RTD
- 4-20mA input
- Communication
- USB
- RS485 ASCII
- RS485 RTU
What is better USB or RS485?
For Reliability RS485 is better. Simply because it is more immune to interference from other sources. RS485 allows longer runs of cable and is compatible with proven and robust communication protocols such as MODBUS
Example of RS485 Waveform with Modbus protocol
The below image has been taken using an oscilloscope on RS485 data lines. the system was a RS485 Modbus data acquisition module.
Yellow is line A and Blue is line B the Oscilloscope also decoded the RS485 transitions into the Modbus message
