Omron 3G3MV-PDRT2 - Communications Line Errors

Chapter 8
8-2
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 Meaning Countermeasures
Color Status
MS Green Lit The Unit is operating normally. ---
Flashing Initial settings or necessary prepara-
tions for communications are incom-
plete.
• Turn ON the Inverter power supply
again.
• Replace the Option Unit.
Red Lit A fatal error (hardware error) has
occurred in the Unit.
• Turn ON the Inverter power supply
again.
• Replace the Option Unit.
Flashing A non-fatal error, such as a switch
setting error, has occurred.
• Check the baud rate setting.
• Turn ON the Inverter power supply
again.
• Replace the Option Unit.
--- Not lit Power is not being supplied from the
Inverter.
The Unit is not connected properly
and power is not being to supplied to
it.
• Check the Option Unit connector
and turn ON the Inverter power
supply.
• Replace the Option Unit.