Communications Line Errors - Omron 3G3MV-PDRT2 User Manual

Communications Errors
8-1

Communications Line Errors

Malfunctions in DeviceNet communications that are a result of broken wires, short circuits, reversed
wiring, duplicate node address assignments, or noise interference are detected as transmission
(BUS) errors. When a transmission error is detected, the Inverter's Fault Bit will turn ON and the
motor will coast to a stop.
When an error is detected, perform error processing according to the indicator display of the
DeviceNet Communications Unit/Card with the terminal cover and Digital Operator removed.
Operation Indicators
■
The DeviceNet Communications Unit/Card has 2 operation indicators that show the status of the
power and communications.
Indicator Display
Color Status
MS Green Lit
Flashing
Red Lit
Flashing
--- Not lit
8-2
Meaning
The Unit is operating normally.
Initial settings or necessary prepara-
tions for communications are incom-
plete.
A fatal error (hardware error) has
occurred in the Unit.
A non-fatal error, such as a switch
setting error, has occurred.
Power is not being supplied from the
Inverter.
The Unit is not connected properly
and power is not being to supplied to
it.
Chapter 8
Countermeasures
---
• Turn ON the Inverter power supply
again.
• Replace the Option Unit.
• Turn ON the Inverter power supply
again.
• Replace the Option Unit.
• Check the baud rate setting.
• Turn ON the Inverter power supply
again.
• Replace the Option Unit.
• Check the Option Unit connector
and turn ON the Inverter power
supply.
• Replace the Option Unit.