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Chapter 8
8-3
Communications Errors
Note
For communications line problems, detailed error codes will be displayed on the indicators of
the Master Unit. Check the error code and take appropriate countermeasures according to the
descriptions in
Chapter 9 Troubleshooting and Maintenance
of
CS/CJ Series DeviceNet Unit
Operation Manual
(W380).
NS
Green Lit
The DeviceNet Network is operating
normally.
(Communications connections estab-
lished.)
---
Flashing
The Network is normal, but the com-
munications connection with the
Master Unit is not established.
Turn ON the power supply again after
the following steps.
• Register in the scan list.
• Set the connection path.
• Turn ON the power supply to the
Master Unit.
Red
Lit
A fatal communications error has
occurred.
A DeviceNet communications error
was detected caused by node
address duplication or Bus OFF.
(These errors make communications
impossible.)
Turn ON the power supply again after
the following steps.
• Correct node address duplication.
• Connect termination resistance to
both ends of the communications
line.
• Correct communications line con-
nection problem.
• Correct the Master Unit errors that
occur when the Master Unit stops
after communications is once
established.
• Correct environmental conditions
such as noise.
Flashing
A non-fatal communications error has
occurred due to communications tim-
eout.
Turn ON the power supply again after
the following processing.
• Connect termination resistance to
both ends of the communications
line.
• Correct defective connections in the
communications line.
• Correct environmental conditions
such as noise.
---
Not lit
A DeviceNet Network error has
occurred. For example, the Network
does not exist, power is not supplied
to the Unit, or the baud rates do not
match.
• Check the baud rate setting.
• Check the Option Unit connector
and turn ON the Inverter power
supply.
• Replace the Option Unit.
Indicator
Display
Meaning
Countermeasures
Color
Status
Summary of Contents for 3G3MV-PDRT2
Page 4: ......
Page 12: ......
Page 36: ...Chapter 1 1 22 Functions and System Configuration...
Page 52: ...Chapter 2 2 16 Example System Startup...
Page 94: ...Chapter 4 4 14 SYSDRIVE Inverter Settings...
Page 130: ...Chapter 5 5 36 Remote I O Functions...
Page 234: ...Chapter 8 8 14 Communications Errors...
Page 362: ...R 2 Revision History...