9 Troubleshooting
YASKAWA ELECTRIC
TOBP C730600 59A V1000 Option Modbus TCP/IP Installation Manual
EN 41
Control Connection
Time-out.
• Option did not receive a command (write to Modbus address 01H) within the time-out
period specified in parameter F7-16
• Check value programmed in F7-16
• Check if PLC program stopped running
Duplicate IP Address
The option shares IP Address with at least one other node.
Check the setting value of F7-03 and F7-04.
LED Operator Display
Fault Name
EF0
Option Card External Fault
The alarm function for an external device has been triggered.
Cause
Corrective Action
An external fault is being
sent from the upper
controller (PLC)
• Remove the cause of the external fault
• Reset the external fault input from the PLC device
Problem with the PLC
program
Check the program used by the PLC and make the appropriate corrections.
LED Operator Display
Fault Name
oFA00
Option Card Fault
Option is not properly connected.
Cause
Possible Solution
Non-compatible option
connected to the drive
Connect an option that is compatible with the drive.
LED Operator Display
Fault Name
oFA01
Option Card Fault
Option is not properly connected.
Cause
Possible Solution
Problem with the
connectors between the
drive and option
Turn the power off and check the connectors between the drive and option.
LED Operator Display
Fault Name
oFA03
Option Card Fault
Option self-diagnostics error.
Cause
Possible Solution
Option hardware fault
Replace the option.
