Document Version V3.1.0 (2020-08-18) 41
Appendix A FAQ
This manual proposes solutions to some common problems during QD1 operation
for better use of QD1 products by users:
Q: Why is the yellow LED2 of economical QD1 not lit?
A: Check whether the 24V power supply is properly connected and normally
supplies power.
Q: Why is the read data incorrect or corresponding channel unable to be
controlled when reading or controlling channels after normal connection?
A1: Confirm whether the electrical connection of corresponding channel is normal
and whether the connection is loose or dropped.
A2: Confirm whether the channel configured for software matches the actual
channel of hardware.
Q: Why are QD1 products not scanned when using IP Config?
A1: Check whether the 24V power supply is properly connected and normally
supplies power.
A2: Check whether the connection of network cable is normal and reliable.
Q: Why is non-conduction displayed on the IO control panel (Control Panels”
→ "Remote I/O" → "RIO 1 Status) after Web Interface configuration?