Yaskawa RS-485 MEMOBUS - Manual (Page 24)

24 YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Manual
7 Troubleshooting
7 Troubleshooting
Problems with the option interface may trigger an operator error.
Refer to the J1000 Technical Manual for all other errors.
◆
Fault
LED Operator
Display
Minor Fault Name
CE
MEMOBUS/Modbus Communication
Error
Cause Possible solutions
Data not received
within the CE
detection time
limit set in
parameter H5-09.
This is possibly
due to noise or a
improperly
connected
communication
cable.
⇒Check for improper wiring or loose
cables.
⇒Make sure the unit is properly grounded.
⇒Reconnect leads running to the main
circuit in the drive.
⇒Make sure the DIP switch for terminal
resistance is set appropriately.