How To Diagnose When Device Couldn't Communicate Network - Hitachi HX-RIO3 Series User Manual

36

How to diagnose when device couldn't communicate network

Inspection of wrong or omission cable connection.
- Check status of cable connection for each node.
- Check that all colour matches between connector and cable.
- Check wire omission.
Terminator resistor
- If terminator resistor is not installed, install terminator resistor
- Check location of terminator resistor
Configuration of Node address
- Check duplication node address.
Configuration of Master
- Check configuration of master
- Check whether to do download or don't
- Check composition is right
Configuration of communication baud rate
I/O size
Configuration of each node
Ground and environment
- Check ground is contacted
- Check environment factor (temperature, humidity, etc.) is in less than regular limit
HX-RIO3 Series