Omron CJ1W-SCU22, Руководство по эксплуатации, Страница: 313 / 478

9-35
9 Troubleshooting and Maintenance
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
9-5 Even
t L
ogs
9
9-5-2 Error T
ab
le
846B 0000 hex Parity Error A parity error
occurred. • In Serial Gateway Mode or Pro-
tocol Macro Mode:
• The reception circuits in the
Serial Communications Unit
are faulty.
• A transmission error occurred
due to noise or other factors.
• During Loopback Test
• Loopback test jig failure.
• Noise
• The communications circuits
in the Serial Communica-
tions Unit are faulty.
√
page 9-50
846C 0000 hex Overrun
Error, Fram-
ing Error, or
Parity Error
(Transmis-
sion Error) An overrun error,
framing error, or
parity error
occurred. • The communications conditions
and baud rate settings do not
match the host.
• Noise or other external interfer-
ence.
• The baud rate is outside the
allowable range or there are bit
errors due to different stop bit
settings or other parameters.
• The communications cable wir-
ing is faulty.
• Terminating resistance is not
set correctly for the RS-
422A/485 ports.
• Wiring is faulty or terminating
resistance is not set correctly
on an NT-AL001 or other
Adapter.
√
page 9-51
846D 0000 hex Transmis-
sion Error
(CRC Error) A CRC error
occurred. • Noise
• CRC calculation method does
not match the device.
√
page 9-52
Event code Event name Meaning Assumed cause
Level
Reference
Maj Prt Min Obs Info